In the northern and southern pole, beautiful lights show in the sky, best seen at night. They are colorful and mesmerizing to watch. They are called aurora or polar lights. Auroras were first seen in 1791 in New England. The word Aurora is the name of a Roman goddess of dawn. These are mostly seen in high altitude regions that is around Arctic and Antarctic regions.
There are auroral zones between 10o to 20o from the geomagnetic poles. “Auroral oval” is the name given to the region which displays the aurora. The Aurora that appears in the region near to northern pole are called Aurora Borealis and the Aurora that appears in the region near to southern pole are called Aurora Australis.
how this colorful auroras are formed?
You may wonder to know that the reason behind this beautiful event, which mostly appears at night, is our very own star, The Sun. He is boiling and burning continuously since formation. The temperature of the sun at his surface is 5,505o C. But inside in the core of the sun, the temperature is 15 million degree Celsius. As the temperature fluctuates, some charged particles are thrown out of his outermost surface and travel outwards. The technical term for this is “The Solar Wind”. This wind reaches the earth and the charged particles strike with the atoms in the atmosphere. Because of this, excitation in the energy of the electrons occur and when they are returning to the original energy level, release photons which is the light we see. The earth`s magnetic field diverts these charged particles towards the poles. Hence these phenomena can only be seen in these areas.
How the light is of differnt colors?
Aurora of different colors are seen. Sometime they are green, blue and sometimes they are yellow or violet. The reason for the different colors are the atoms with which the charged particles colloid. Collision with Oxygen molecules caused yellow and green light. Collision with nitrogen caused blue, red and violet colors. the molecular nitrogen gives purple color but the atomic nitrogen gives blue.
Altitude also affects the colors produced. At a height of 150 miles green light will appear and above that red will appear. Blue lights appear up to 60 miles and above that purple and violet colors appear.
These auroras can be seen in other planets also. But the planet must be having its atmosphere and active magnetic field. In our solar system Jupiter, Saturn, Uranus and Neptune experience auroras.
The Aurora borealis is always present. But they can be seen when the sky and air are clear. September-October and March-April are the best time to watch these phenomena. NASA says after 2 days of sun spot activity these lights are brighter.
best places to watch aurora:
Darker the place better you can view the aurora. Choose a place away from light pollution and air pollution. Get a place with a larger view of open sky free of clouds. The places near to the Arctic circle are best. This may include Alaska, Iceland, Greenland Norway, Finland etc.
To capture this beauty you don’t need any expensive camera. A normal camera with a tripod will be more than enough for you. The Aurora Borealis appears and disappears very fast, hence you must be patient and quick enough to take a good picture of this beautiful event.
Every individua ‘s life and work are closely related to his environment . Man has progressed in various fields of life such as industrialisation , mechanisation, transport and science, etc. Therefore, this age is called an electronic age or space age. But on the other hand, this development has created such conditions that a person may get injured anywhere and at anytime.
In spite of good measures aimed at industrial safety and the development of safety devices and techniques, the number of accidents is still high in industries and specially in day to day life. Indeed, there is no definite time of such injuries. These can happen to anyone, anywhere and at anytime. Injuries usually occur in industries and on the farm, during the repair, maintenance and operation of vehicles of various kinds, during games and sports and in various situations everyday. These often happen by accident, so it is impossible to anticipate the time and place of an accident. Someone may get fractured, another may be bitten by snake. So, it can be said that every individual is trapped in one way or the other by accidents. In fact, it is very difficult ton get medical aid to victims at the sport of the accident. At that moment, some immediate possible aid is required to the victim. So, first aid is the first help which is given to the wounded or accidental victims before the arrival of the doctor.
In other words, ” It is an immediate and temporary care given to a victim of an accident or sudden illness before the services of a physician is obtained.”
In can also be said that first aid is that aid is that aid which is provided to the injured in case of an accident, injury or sudden illness. It enables the trained persons to render the help to preserve life, promote recovery of the injury until the arrival of the doctor.
In fact, the area of field of sports and games is such a field, where getting injured is very common. Any player can be injured at least once during his/her sports career. The facilities of a qualified doctor are available in national or international level competitions but usually such facilities or services of a doctor are not available during practice, training or competitions of normal levels. The teacher of health and physical education should also have enough knowledge of first aid so that he may provide first aid to the players at the time of training and competitions.
One 27th MARCH 2020, a long periodic comet with near parabolicorbit was discovered by a group of astronomer during the NEOWISE Mission the Wide-field Infrared Survey Explorer (WISE) space telescope. At that time, it was an 18th-magnitude object, located 2 AU (300 million km; 190 million mi) away from the Sun and 1.7 AU (250 million km; 160 million mi) away from Earth.
C/2020 F3(NEOWISE)
Discovered by NEOWISE Discovery date March 27, 2020 Orbital characteristics A Epoch 2458953.5 (April 14, 2020) Observation arc 113 days Number of observations 376 Orbit type Long period comet Aphelion 538 AU (inbound) 710 AU (outbound) Perihelion 0.29478 AU Semi-major axis 270 AU (inbound) 355 AU (outbound) Eccentricity 0.99921 Orbital period ~4400 yrs (inbound) ~6700 yrs (outbound) Inclination 128.93° Node 61.01° Argument of periapsis 37.28° TJupiter −0.408 Earth MOID 0.36 AU (54 million km; 140 LD) Jupiter MOID 0.81 AU (121 million km) Dimensions ~5 km (3 mi) Last perihelion July 3, 2020 Next perihelion unknown
HISTORY AND OBSERVATION
The object was discovered by a team using the WISE space telescope under the NEOWISE program on March 27, 2020.It was classified as a comet on March 31 and named after NEOWISE on April 1. It has the systematic designation C/2020 F3, indicating a non-periodic comet which was the third discovered in the second half of March 2020.
Comet NEOWISE made its closest approach to the Sun (perihelion) on July 3, 2020, at a distance of 0.29 AU (43 million km; 27 million mi). This passage through the planetary region increases the comet’s orbital period from about 4400 years to about 6700 years.Its closest approach to Earth occurred on July 23, 2020, 01:09 UT, at a distance of 0.69 AU (103 million km; 64 million mi) while located in the constellation of Ursa Major.
In early July, the comet could be seen in the morning sky just above the north-eastern horizon and below Capella. Seen from Earth, the comet was less than 20 degrees from the Sun between June 11 and July 9, 2020. By June 10, 2020, as the comet was being lost to the glare of the Sun, it was apparent magnitude 7,when it was 0.7 AU (100 million km; 65 million mi) away from Sun and 1.6 AU (240 million km; 150 million mi) away from Earth. When the comet entered the field of view of the SOHO spacecraft’s LASCO C3 instrument on June 22, 2020, the comet had brightened to about magnitude 3, when it was 0.4 AU (60 million km; 37 million mi) away from the Sun and 1.4 AU (210 million km; 130 million mi) away from Earth.
By early July, Comet NEOWISE had brightened to magnitude 1, far exceeding the brightness attained by previous comets, C/2020 F8 (SWAN), and C/2019 Y4 (ATLAS). By July, it also had developed a second tail. The first tail is blue and made of gas and ions stretching almost 70° from its nucleus. There is also a red separation in the tail caused by high amounts of sodium which is nearly stretched 1°. The second twin tail is a golden color and is made of dust stretched almost 50°, like the tail of Comet Hale–Bopp. This combination resembles comet C/2011 L4 (PANSTARRS). The comet is brighter than C/2011 L4 (PANSTARRS), but not as bright as Hale–Bopp was in 1997. According to the British AstronomicalAssociation, the comet brightened from a magnitude of about 8 at the beginning of June to −2 in early July.This would make it brighter than Hale–Bopp. However, as it was very near to the Sun, it was reported as 0 or +1 magnitude and remained that bright for only a few days. After perihelion, the comet began to fade, dropping to magnitude 2. Its nucleus activity subdued after mid-July, and its green coma was clearly visible after that.
On July 13, 2020, a sodium tail was confirmed by the Planetary Science Institute’s Input/Output facility. Sodium tails have only been observed in very bright comets such as Hale–Bopp and C/2012 S1 (ISON).
From the infrared signature, the diameter of the comet nucleus is estimated to be approximately 5 km (3 mi). The nucleus is similar in size to Comet Hyakutake and many short-period comets such as 2P/Encke, 7P/Pons-Winnecke, 8P/Tuttle, 14P/Wolf, and 19P/Borrelly. NASA’s Parker Solar Probe had captured an image of the comet, from which astronomers also estimated the diameter of the comet nucleus at approximately 5 km (3 mi). Later in July 2020, other observations were also reported, including those related to coma morphology and spectrographic emissions. On 31 July 2020, strong detection of OH 18-cm emission was observed in radio spectroscopic studies at the Arecibo Observatory. On August 14, 2020, the rotation period of the comet was reported to be “7.58 +/- 0.03 hr”.
A glimpse
TRAJECTORY
Comet NEOWISE retrograde orbit crossed to the north of the plane of the ecliptic, to which it is inclined at approximately 129 degrees, on June 29, 2020, 01:47 UT. It made its closest approach to the Sun (perihelion) on July 3, 2020, at a distance of 0.29 AU (43 million km; 27 million mi). This passage increases the comet’s orbital period from about 4400 years to about 6700 years.On July 18 the comet peaked at a northern declination of +48 and was circumpolar down to latitude 42N. Its closest approach to Earth occurred on July 23, 2020, 01:09 UT, at a distance of 0.69 AU (103 million km; 64 million mi) while located in the constellation of Ursa Major.
Sir Richard confirmed the purchase in an interview.
E
Elon Musk has bought a ticket on one of rival billionaire Sir Richard Branson’s spaceship flights, according to a newspaper report.
As Sir Richard prepares to fly on Virgin Galactic’s first fully crewed flight to the edge of space on Sunday from New Mexico, The Sunday Times says Mr Musk – who owns rival exploration company SpaceX – has paid for a seat on a future Virgin voyage.
Mr Musk paid a 10,000-dollar (£7,000) deposit to reserve a seat. No date for his flight has been specified.
Sir Richard confirmed the purchase in an interview with The Sunday Times, saying he might reciprocate by booking a ticket on a SpaceX flight in the future.
“Elon’s a friend and maybe I’ll travel on one of his ships one day,” he said.
Amid what has been dubbed the billionaires’ space race, SpaceX has launched dozens of rockets, including manned flights, but Mr Musk himself has not yet flown on any. The company is due to launch its first fully private spaceflight in the autumn.
Sir Richard will become the first owner-astronaut to take part in a mission, beating Amazon founder Jeff Bezos who plans to reach space in his own rocket – through his Blue Origin company – in nine days’ time.
Tourists are expected to pay some 250,000 dollars (£180,000) for a spaceflight on Virgin Galactic, which includes four minutes of zero gravity.
When you think of the term love languages, the first thing that may come to mind is relationships and romance. But finding your self- love language is actually an important factor in your self care routine. Here are some helpful tips .
Before delving into self- love languages,let’s know about where this concept from. In 1992, Dr. Gary champan wrote a book called The Five languages. In the book ,he discusses five different ways to express love with your partner. They include words of affirimation,acts of service, receiving gifts, quality time and physical touch.
Champan notes that discovering your love language can help you communicate and better connect. With your love! He also adds that everyone expresses and recieves love differently , so it’s important to understand your love language.
1. Quality Time :
If your love language is quality time, you adore just being together with the person you love .A perfect day would be hanging out with your loved ones and simply enjoying the moment. Why not apply this to your self care routine? Be mindful of how you spend time with yourself. Give yourself the undivided attention that you would want from someone else.
Self- love Ideas for Quality Time :
* practice mindfulness.
* spend a day at the coffee shop.
* Do a gudied meditation exercise.
* sign up for a yoga class.
* Enjoy the sunset.
* Go for a drive.
* start a garden.
*Go on a solo- trip to a dreamy destination.
* Read a chapter of a new book before bed.
* paint a picture.
* Treat yourself to dinner at your favorite restaurant.
* Listen to your favorite album on repeat.
* stargaze.
* watch a meaningful movie.
* sit on your porch.
* Go on a nature hike.
2. Words of Affirmation :
Sometimes, it’s nice to just hear the words,”I love you” or ” you did a great job”, If words of affirimation is your love language,you feel happiest when someone expresses their affection in words. Similarly ,you should speak loving to youself.At times, we can be our own worst critics. Replacing negative self- talk with kind words is a powerful way to show yourself love.
Self -love ideas for words of affirimation:
* Recite daily positive affirmations
* stick encouragingnotes on your fridge.
* write yourself a loving letter.
* keep a gratitude jar.
* Remind yourself of your dreams by making a vision board.
* Be aware of how people in your life speak to you.
* Talk about your passions with others.
* Forgive yourself for past mistakes.
*Give yourself a compliment.
* write a list of things you’ve accomplished this year.
3.Receiving Gifts:
When it comes to this love language,it’s the thought behind the gift that counts. You love the idea that someone bought or made a gift with just you in mind. If receiving gifts is your love language ,you truly appreciate when people listen to your interests and passions.
Let’s say that you adore all things music. You’d probably feel emotional if your loved ones suprised you with tickets to your favorite artist’s concert. Another thing that would mean the world to you is if they made you a personalized playlist! Overall, small gifts make you feel special because someone you love thought about you
Self-love Ideas for Receiving Gifts:
* Treat yourself to a small gift from yore fav shop.
* Buy a ticket to see a local show or movie.
* Invest in your hobbies and passions.
* Decorate your workspace with positive knickknacks.
* create a scrapbook of memories & mementos.
* Make yourself a self care kit.
* start a DIY project just for fun.
4. Physical Touch :
If physical touch is your love language,a hug from someone you care about can make your wholeday. Showing affection through physical touch calms you down and makes you happiest. When it comes to self care , take the steps you need to feel more in tune with your body. Doing so well bring you a sense of calm.
Self-love ideas for physical Touch:
* cook yourself a healthy dinner.
* Get some fresh air
* Light your favorite candle.
* work on your skincare routine.
* sign up for a fitness class.
* Enjoy a cup of tea.
* Drink a glass of water
* play with makeup.
* Go to the gym.
5. Acts of service :
On to the final self- love language _ acts of service! When I took Dr.chapman’s quiz,I was’nt too surprised that this was my personal love language.At the end of the day ,this love language is all about showing the people in your life you care.
Self-love Ideas for Acts of service:
* check off your to-do list.
* Donate to a local charity.
* Learn how to set boundaries and say no to things that drain your energy.
Color is a communicator. It has a language all its own that we utilize, and culturally participate with, on a daily basis. Color can inspire moods from outside in interior designers and decorators know this. To initiate color choices, color professionals.Mere color,unspoiled by meaning,and unallied with definite form, can speak to the soul in a thousand different ways.
It is used effectively color theory is one of the most powerful tools a designer can wield. Colors are a form of non verbal communication that can speak volumes in a fraction of second. They can instantly set a mood,convey an emotion,invoke a physiological reaction or inspire people to take action.when we harness the right color emotion to help tell a client’s story it can have a powerful effect. Below is a list of PMS colors and their associated moods.
Red :
Evokes strong emotions like passion or intensity, encourages appetite,symbolizes love and danger, Eyes look to red first, it draws attemtion,creates movement and exctiment, Too much red however,feels hostile. Use to stimulate quick decision making, shows to increase respiration rate ,raise blood pressure and enhance metabolism.
Yellow :
A spontaneous yet unstable color, associated with joy, intellect , energy, happiness, and food. Use to attract attention. When overused it can have a disturbing effects, studies have shown that babies cry more in yellow rooms. Cherrful, warm and symbolizes energy and increases metabolism. Yellow also causes the brain to seretonin, giving one a feeling of optismism . That is all well are good but if used wrongly on a brands graphics and especially on a website, and can strain eyes and cause eye fatigue.
Blue :
Number one color preferred by males. Symbolizes trust, loyality, wisdom, confidence, intelligence, faith, truth. Use to promote cleaniness, stability and hi tech products. Shown to supress ones appetite and stimulate productivity.
Orange :
Highly accepted among the younger generation. Associated with tascination, creativity, determination, attraction, encouragement and stimualtion. Effective in promoting food products by stimulating, appetite. Increases oxygen to the brain amd stimulates mental activity.
Green :
The color of nature that involves a healing power. Symbolizes grown relaxation, harmony, freshness and fertility. Use to promote saftey and tranqullity. Stimulates harmony in the brain promoting balance between body and mind.
White :
A depiction of faith and purity. Associated with safety and cleanliness. Use to suggest simplicity and sterlitity in products. Acts as a clean state and helps to promote creativity.
Purple :
The color of royality. Associated with luxury, ambition, wisdom, dignity, independence, creativity and magic. Use when marketing toys to children. Surveys taken have shown that 3/4 of childen prefer that color purple.
Black :
A mysterious yet authoritative color, associated with elegance, formality, fear, death and evil. Use behind bright colors to make them pop. Know to create a slimming effect when worn.
Gray :
Gray is the perfect neutral to work with in a graphics environments and has less reflection than white. Evokes a sense of professionalism and calm. Seen a sleek and high-end and gives one a sense of stability. Too much evokes a feeling of aging, depression and loss.
Pink :
A calming and warm color that evokes love and romance. Pink is a clean and feminine color. Recently however, there has been a backlash against is overuse in product packaging, giving rise to the term ” pink- washed”.
Color Harmony :
Color is similar to musical notes in many ways, and there are certain combinations of colors that are pleasing when put together, approximately called color chords or color Harmonies.
Complementary :
Colors that are opposite of each other on the color wheel are called complementary colors. The high contrast between complementary colors when seen together causes them to stand out more and has a very vibrant look, but can be tricky to use in large doses without being too intense.
Split- Complementary:
Split – complementary is a variation on complementary. It uses one color and the two adjacement colors to its complement to bring the same strong contrast as complementary color combinations,but with less tension.
Analogous :
Using colors next to each other on the color wheel tend to give designs a feeling of unity and serenity. Because these colors are similar in hue, having constrating values is important when using analogous combinations to keep colors distinct from each other.
Triadic :
Triadic combinations are made with three colors located equal distance from each other on the color wheel, such as red, yellow, and blue making a triangular pattern. This harmony has a tendency to be vibrant despite satuartion, and is often more impacting when one color is used more than the others.
WHEN WE HEARD ABOUT BLACK HOLE WE HAVE CERTAIN QUESTIONS IN MIND .LETS FIND OUT ANSWERS FOR SOME QUESTIONS DOWN BELOW.
1)What happens if a person goes into a black hole?
The gravitational attraction of a black hole is so strong that not even light can escape it. Even before you reach the event horizon – the point of no return – you would be spaghettified (sometimes referred to as the noodle effect i.e,like spagetti ) by the black hole‘stidal forces.
2)What is inside a black hole?
HOST PADI BOYD: While they may seem like a hole in the sky because they don’t produce light, a black hole is not empty, It’s actually a lot of matter condensed into a single point. This point is known as a singularity.
3)Can a person survive a black hole?
The radial size of the event horizon depends on the mass of the respective black hole and is key for a person to survive falling into one. A person falling into a supermassive black hole would likely survive but it is not advisable since the tidal forces of black hole can strench you like sapagetti or even death by getting crushed in that hole.
4)Has anyone been in a Blackhole?
Yes, It’s Possible to Jump Into a Black Hole. Scientists say humans could indeed enter a black hole to study it. But the human in question couldn’t report their findings or ever come back.
5)Does time stop in a black hole?
Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops.
6)What happens if 2 black holes collide?
It is possible for two black holes to collide. Once they come so close that they cannot escape each other’s gravity, they will merge to become one bigger black hole. Such an event would be extremely violent.
Electric vehicles are sweeping our cities, and an overwhelming number of individuals are choosing to commute in electric vehicles. Electric mobility is unquestionably the way of the future, given the environmental advantages offered by these vehicles and the commitment of both manufacturers and drivers.
Rachid Yazami, a Moroccan innovator, revealed a few weeks ago:
We broke a new world record a few weeks ago by charging an electric car battery in just 10 minutes. I hope that morocco will succeed in developing and marketing ultra-rapid chargers.
Statement by Rachid El Yazami
Dr. Rachid Yazami, the inventor of one of the most important components of lithium-ion batteries, is working on a method to charge an electric vehicle in less than 10 minutes.
Given the recent technological advancements, electric vehicles still face obstacles in becoming the preferred mode of transportation and replacing combustion engine vehicles. One of the most significant concerns is slow battery charging, however, it appears that this impediment is coming to an end.
Dr. Rachid Yazami, the inventor of the graphite anode, a critical lithium-ion battery component, is working on a method that will allow the electric car to be charged in as little as 10 minutes. A breakthrough in these aspects will be a watershed moment in electric transportation, virtually equating the time spent charging the vehicle’s battery to just the time spent replenishing traditional fuel.
According to The Register, Dr. Rachid Yazami is working on a new quick charging system for electric automobiles that beats any other technology now available. Your technology, according to current testing, can charge a high-density battery in under 10 minutes, which itself is seven times faster than Tesla.
To attain this goal, Dr. Rachid Yazami uses a different loading method than the usual one. Instead of utilizing constant current, they utilize non-linear voltammetry, which adjusts voltage instead of current.
Voltage, according to the expert, should be seen as a sequence of steps on a ladder. Every one of those rungs’ voltage must remain constant until the conditions are met and that the next rung can be advanced. During the charging process, this charging mechanism gives the batteries a break, helping them to last longer.
“Fast-charging technology improves battery life by decreasing stress”, according to Dr. Rachid Yazami. “We can preserve the battery for 10 years instead of five because we charge it in such a way that it is not subjected to high temperatures or current stress. The optimal charging situation for the battery would be 10 minutes of charging time for an 800 km range.
MEPAP(MULTIPURPOSE ELECTRICITY PRODUCER INTEGRATED WITH AIR PURIFIER)
WHAT MADE ME TO DO THIS PROJECT
I was from a lower middle class family. We suffered many months without electricity and our area is prone to traffic so our area is filled with smoke and dust. Many were suffering from several respiratory disorders due to this dust and smoke. These made me to think of inventing a low cost electricity generator
The growing demand for electrical energy and increasing air pollution around the globe is the main factor that driven my research.
More than 80 percent of our energy today comes from burning fossil fuels, which is both harmful to our environment and unsustainable as well. My invention will help to solve the energy crisis by improving the efficiency of electromagnetic energy-harvesting systems, vibration energy-harvesting systems , wind energy-harvesting systems, thermal energy harvesting system and air cleanser all in a single project.
Due to increase in the carbon dioxide level and other harmful gases specially which are contributing in increase in pollution and global warming, our automobile industries are one of the easy and clear target therefore many researches has been undertaken in this field . Globally, it is estimated that about 1/3 of the total energy is utilized while remaining is rejected as waste heat. The maximum efficiency of an engine is around 25% which means that 75 % of the energy left is wasted in the form of heat from parasitic losses and friction which causes 30% waste in the engine coolant and 40% in the form of gases in exhaust.
The given figure shows the energy distribution in an Internal Combustion Engine.
MEPAP’S AIR PURIFIER
FEATURES AND WORKING
MEPAP AIR CLEANSER IS AN AIR PURIFIER WHICH PURIFIES AIR FROM THE SOURCE (VEHICLES AND FACTORIES EXHAUST) WHERE IT IS PRODUCED.
IT IS MADE TO REDUCE THE AIR POLLUTION
The compact purifier is an apt solution for the increasing pollution. The Active Oxidization Cell with its self-cleaning abilities keeps the purification process on, while the 360º air flow guards us from harmful impurities by distributing healthy air.
Active shield
The purification process eliminates sub-micron respirable particles and infection carrying microbes in the air.
Active Carbon Filter
The most advanced technology filters out bad odor, toxic gases and other harmful gases including VOCs (Volatile Organic Compounds) from the air you breathe in. The carbon filters have excellent absorbent qualities to soothe respiratory discomforts by eliminating irritants in the air.
ICC (Improved Catalytic Converter): Catalytic converters, having expensive metals namely platinum-palladium and rhodium as the catalysts, are fitted into automobiles for reducing emission of poisonous gases. As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into carbon dioxide and water, and carbon monoxide and nitric oxide are changed to carbon dioxide and nitrogen gas, respectively. To overcome from cost and reducing the rare metal usage the project made the drive to develop an alternate source of oxidation catalyst for oxidation reaction and thus reduces the NOx and HC emissions. The substrate selected in this project is wash coat technology employed by using the silicon dioxide and alumina with silica. The catalytic converter is constructed with inner/outer shell construction supported with cones and flanges. The initial emission readings are conducted in the experimental engine. This catalytic converter reduces the harmful pollutant more efficiently and at a lower cost than the conventional catalytic converter.
Honeycomb Active Carbon Filter
The carbon filters have excellent absorbent qualities to eliminate repulsive smell, toxic gases and other odor, leaving behind fresh and pure air to breathe.
HEPA (High Efficiency Particulate Air Filter) Type Filter
The HEPA type filter removes airborne pollutants and eliminates ultra-fine particles like bacteria, pollen, and mould, which cannot be done by other air purifiers.
Anion Generator
The technology ensures that the air you breathe has no positive ions, leaving you rest assured of living in a no impurities zone. Negative ions produced by purifier bind themselves with airborne pollutants and removes them from the air thereby creating a fresh and cleaner environment
Air pollution sensors
Air pollution sensors are devices that detect and monitor the presence of air pollution in the surrounding area. They can be used for both indoor and outdoor environments. These sensors can be built at home, or bought from certain manufactures. Although there are various types of air pollution sensors, and some are specialized in certain aspects, the majority focuses on five components: ozone, particulate matter, carbonmonoxide, sulfur dioxide, and nitrous oxide.
FUTURE PLAN FOR AIR PURIFIER PART
Carbon Separator and Collector: Carbon dioxide is considered a major reason for global warming. The element jeopardizes people’s health, threatens national security, and endangers basic human needs. Yet, it also holds great promise as a fuel of the future.
The carbon dioxide splitter, which consists of copper and tin.
The splitter has an atomic layer of tin in order to trap the energy that would be lost if copper is utilized as an electrode. It also has a thin membrane between the cathode and anode to improve the reaction.
The splitter can open windows to solving the problem of storing energy from renewable sources by turning it straight into liquid fuel.
The process of splitting is efficient and carbon-neutral. It is already a well-known method of producing fuel without increasing the level of carbon dioxide in the atmosphere. CO2 is split into oxygen and carbon monoxide.
Carbon monoxide can be incorporated with hydrogen to create synthetic carbon-based fuel. CO2 is taken out of the atmosphere without being put back in, which produces clean fuel.
MEPAP ELECTRICITY GENERATOR GENERATES ELECTRICITY WITH THE HELP OF VIBRATRION(Piezoelectric Materials) AND ELECTROMAGNETIC RADIATION(with the help of MetaMaterials) ELECTROMAGNETIC induction [inductive coupling(power density is proportional to d, q, 1/d^3)] and wind energy( from purifier where mini turbine is connected with dynamo) AND ALSO THERMOELECTRIC ENERGY (power density=25µW/cm^2).
ELECTRICITY from VIBRATRION
MEPAP ELECTRICITY GENERATOR could produce enough electricity from random, ambient vibrations to power a wristwatch, pacemaker, wireless sensor , phones etc..,
MEP are highly efficient at providing renewable electrical power from arbitrary, non-periodic vibrations. This type of vibration is a byproduct of traffic driving on bridges, machinery operating in factories and humans moving their limbs.
In two of the sub generators present in PFIG (Parametric Frequency Increased Generators), the energy conversion is performed through electromagnetic induction, in which a coil is subjected to a varying magnetic field. This is a process similar to how large-scale generators in big power plants operate. It also uses piezoelectric material, which is a type of material that produces charge when it is stressed. This version has applications in infrastructure health monitoring. The generators could one day power bridge sensors that would warn inspectors of cracks or corrosion before human eyes could discern problems.
Power Density= 4 µW/cm^2
MECHANISM AND APPLICATIONS:
It contains a resonator which is used to amplify the vibration source, and a transducer device which changes the energy from the vibrations into electrical energy. The transducer consists of a magnet and coil of a piezoelectric crystal.
A number of crystals can emit an electric current when compressed or they can change shape when an electric charge is employed. This piezoelectric effect is used in ultrasound and sonar devices, as well as energy harvesting.
Piezoelectric generators utilize thin casings or beams made of piezoelectric crystals as a transducer mechanism. When a crystal is placed under strain by the kinetic energy of the vibration, a small quantity of current is produced because of the piezoelectric effect. These mechanisms are generally straightforward with few moving parts, and they have a very long service life, making them the most prevalent technique of harvesting the energy from vibrations. It is fabricated by MEMS process.
This device uses a freely rotating, unconventional brass rotor with an implanted magnet, and multiple PZT beams with a magnet on each beam.
As the magnet on the rotor draws near one of the beams, the magnets repel each other and deflects the beam, pulling the beam in a process that is described as frequency up-conversion. The gradual rate of a rotating wrist is changed into a higher frequency oscillation. This device is more efficient than a standard electromagnetic harvester, as such as those used in self-powered watches.
Another application, which is in the early stages of development, desires to use the vibrations generated during aircraft flight to power the electronics on the plane that currently depend on on batteries. Such a system would produce a reliable energy source, and reduce maintenance, since batteries would not need to be replaced and piezoelectric systems have a long service life. This system uses a resonator, which permits the airflow to produce a high amplitude steady tone. This is the same principle that is used in many wind instruments by converting the airflow furnished by the musician into a loud steady tone. This tone is used as the vibration that is transformed from kinetic to electric energy by the piezoelectric generator
ELECTRICITY from ELECTROMAGNETIC RADIATION:
Electromagnetic energy harvesting based on the “full absorption concept.” This involves the use of metamaterials that can be tailored to produce media that neither reflects nor transmits any power—enabling full absorption of incident waves at a specific range of frequencies and polarizations since the inception of collecting and harvesting electromagnetic energy, classical dipole patch antennas have been used. “Now, my technology introduces ‘metasurfaces’ that are much better energy collectors than classical antennas. microstrip patch antennas areused because of their low profile, light weight, and planar structure for RF harvesting.
Metasurfaces are formed by etching the surface of a material with an elegant pattern of periodic shapes. The particular dimensions of these patterns and their proximity to each other can be tuned to provide “near-unity” energy absorption. This energy is then channeled to a load through a conducting path that connects the metasurface to a Electromagnetic energy collector.
We can also channel the absorbed energy into a load, rather than having the energy dissipate in the material as was done in previous works. Other key applications include “wireless power transfer—directly adaptable to power remote devices such as RFID devices and tags or even remote devices in general.
The technology can also be extended to the infrared and visible spectra
Power Density= 25µW/cm^2.
ELECTRICITY from ELECTROMAGNETIC RADIATION(RF):
Wi-Fi signals are made of radio waves. Receiving antennas can wirelessly harvest electromagnetic radiation in the Wi-Fi (2.4 GHz and 5.9 GHz), global satellite positioning (1.58 GHz and 1.22 GHz), the cellular communications fourth-generation (4G) (1.7 GHz and 1.9 GHz), and Bluetooth (2.4 GHz) bands and convert the energy from these electromagnetic waves to alternating current (AC). The AC electricity is then sent to the rectifier, which converts it to direct current (DC) electricity.
Using a rectifier made from a molybdenum disulfide (MoS2) layer that is only 3 atoms thick. At this thickness, the MoS2 behaves differently than the bulk material — the atoms rearrange themselves when exposed to certain chemicals. This means the material can behave like a switch, changing from a semiconductor to metallic structure. The MoS2 creates what’s called a Schottky diode, a junction of semiconductor and metal. The diode described in their paper can convert signals at higher frequencies because the structure reduces the extra energy stored by certain materials used in electronics, known as parasitic capacitance. The researchers’ design reduces parasitic capacitance by an order of magnitude compared to current flexible rectifiers, meaning they can capture the previously elusive high-frequency Wi-Fi band radio waves.
ENERGY FROM TERAHERTZ(will implement in future.):
Terahertz waves are electromagnetic radiation with a frequency somewhere between microwaves and infrared light. Also known as “T-rays,” they are produced by almost anything that registers a temperature, including our own bodies and the inanimate objects around us.
Terahertz waves are pervasive in our daily lives, and if harnessed, their concentrated power could potentially serve as an alternate energy source. However, to date there has been no practical way to capture and convert them into any usable form.
MEPAP device would be able to convert terahertz waves into a direct current in future, a form of electricity that powers many household electronics.
This design (referred from MIT ) takes advantage of the quantum mechanical, or atomic behavior of the carbon material graphene. They found that by combining graphene with another material, in this case, boron nitride, the electrons in graphene should skew their motion toward a common direction. Any incoming terahertz waves should “shuttle” graphene’s electrons, like so many tiny air traffic controllers, to flow through the material in a single direction, as a direct current.
Rectifiers, devices that are designed to convert electromagnetic waves from their oscillating (alternating) current to direct current.
Most rectifiers are designed to convert low-frequency waves such as radio waves, using an electrical circuit with diodes to generate an electric field that can steer radio waves through the device as a DC current.
Solar Energy:
Photovoltaic (PV) solar panels use the sun’s power to create a flow of electricity. This is the most widely adopted method of harvesting solar energy today. These panels, which range in size from a few square centimeters to a few square meters, are constructed from many PV cells arranged in an intricate matrix. Intuitively, the larger the surface area available for sunlight to penetrate the PV cells, the more solar energy that gets harvested.
Each PV solar cell is generally made up of a compound semiconductor wafer structure, which can either be a monocrystalline or polycrystalline structure. The structure’s two thin semiconductor wafers, one P-type and one N-type, are each grown separately. The two wafers are placed on top of each other, and the natural reaction that occurs between the two semiconductor types creates a depletion zone that reaches an equilibrium point, without generating any electricity. Due to the PV cell, when light photons pass through and connect with the semiconductor wafers, their interaction releases enough energy to create an equilibrium disruption in the depletion region. That action subsequently creates a brief flow of electricity. However, because of the constant presence of light, this interaction occurs continuously and can produce massive amounts of electrical energy.
The power produced by a single photon interaction replicates across the entire surface of the PV cell. It’s compounded into a whole panel of solar cells. This minor interaction in the depletion zone can be repeated and multiplied, resulting in a significant amount of electricity. PV solar arrays, however, produce DC power. To be integrated with modern power transmission technology, such as the outlets in your home, this DC energy must be converted to AC power using an inverter. There are a variety of proprietary iterations of this fundamental technology that seek to optimize the efficiency of each PV cell on a molecular level, the assembly of the panel, and the panel’s ability to be integrated into a larger solar array.
Thin-film solar cell, type of device that is designed to convert light energy into electrical energy (through the photovoltaic effect) and is composed of micron-thick photon-absorbing material layers deposited over a flexible substrate.
Cadmium telluride thin-films have a peak recorded efficiency of more than 22.1 percent (the percentage of photons hitting the surface of the cell that are transformed into an electric current). By 2014 cadmium telluride thin-film technologies had the smallest carbon footprint and quickest payback time of any thin-film solar cell technology on the market. This is the reason why I used Cadmium telluride thin-film in MEPAP.
Power Density= 1000µW/cm^2
Energy Harvesting from a Vehicle’s Exhaust System Using Thermoelectric Generator Module(TEG):
The efficiency in an internal combustion engine ranges from 25% to 35%. About 50% – 85% of the overall energy loss in a combustion engine is heat, which is either cooled away by the vehicle’s radiator or blown out with the exhaust gases. The other losses take place in bearings and gear boxes. This energy is never put into use again and therefore is called “waste heat”. Even if a small fraction of the waste heat could be turned into useful energy again, it would be a step to the right direction of improving fuel economy.
TEG in MEPAP is a solid stated device which works on the principle of ‘Seebeck effect’.
They are found in solar energy systems like solar panels, solar hot water system, biomass power applications, energy power plants and solar pond systems .Installing a TEG with MEPAP is easy and very beneficial as it has some advantages like small in size, it has no vibrations, makes less or no noise while operating, it generally requires less or no maintenance. And major advantage is that it is using free thermal energy and converting into useful electrical energy. A thermoelectric module consists of many thermo elements connected in electrical channel in series to increase the operating voltage and to increase the thermal conductivity they are connected in parallel. According to a research the conversion of this waste heat into electricity results to an increase of fuel efficiency about 20% . A TEG in MEPAP works on the principle of a Seebeck effect. Two metallic strips, made of different metals and joined at the ends to form a loop. If the junctions are kept at different temperatures then there is an electric current in the loop and the emf developed is called the SEEBECK emf or thermo emf and the current can be used to power a load.
The TEG in MEPAP structure is sandwiched with the thermoelectric material which is then sandwiched by the heat exchanger plates at their ends respectively. The two heat exchangers remains at different temperatures, one at high temperature and the other at lower temperature and called the hot side and cold side. A thermally insulated layer is present between metal heat exchanger and material of a TEG in MEPAP. The p type and n type materials are connected by the metal electrically. A TEG in MEPAP consists of a two sides, one is cold and other is hot side. The hotter side derives the electrons in n type leg towards the cold side which pass through the metallic connection and then passes into the p type leg, hence develops current. Larger the temperature difference between cold side and hot side, larger value of emf will produce.
TEG Power Generation Calculation:
The equation involved in calculation of the performance of a TEG
Z = α2/ kR
Z is a figure of merit of thermoelectric material, R is the electric resistivity
k is a thermal conductivity and
α is a Seebeck coefficient which is
α = ∆V / ∆T,
THERMOELECTRIC METALS:
Thermoelectric materials are used in automobiles, power plants, space satellite, etc. Thermoelectric materials can be characterized according to the structure and composition. They can be classified as – chalcogenide, clathrates, skutterudites, half-heusler, oxides and silicides. The most common thermoelectric materials are the alloys of chalcogenide. The calcogenide materials are popular for their use with (Bi2Te3) and (PbTe).Thermoelectric materials made with Bi2Te3, Se and Sb for temperature use are economical. PbTe has better thermo electric properties at temperature range 500-600 ⁰C and has been used by NASA as a radioactive thermo electric generator (RTG’s) . The stability of a TE material is very important as it should not oxidize within the operating temperature when exposed in air .But nowadays; automobile industries are focusing on bismuth telluride for constructing a TEG.
High charge mobility and small band gaps are the properties of two heavy elements Bi and Te and Bulk alloys of PbTe have a zT value of 0.7 at 467 ⁰C. When SrTe and PbTe are doped with Na, zT value was 2.2 at 642 ⁰C .Skutterudites (MX3) have a lower thermal conductivity due to its complex crystal structure has large voids. CoSb3 based skutterudites are versatile in accepting various actinides, lanthanides, alkalis and alkaline earth metals to be used in void filling and thermal conductivity of skutterudites lowers as the size decreases .Compounds of half heuslers are intermetallic compounds which are thermally stable, having high thermal conductivity and corresponding seebeck coefficient. The lattice thermal conductivity of these compounds reduces having nano structures due to phonon scattering. SiGe alloys are used for high temperature applications because of having very low degradation up to 1000 ⁰C. When compared to their bulk alloys, nanostructured SiGe alloys have higher zT value. Bulk Si0.8 Ge0.2 has zT value of 1 and 0.6 for n type and p type respectively. There is an improvement in zT value when nanocomposite thermoelectric materials are used.
HARVESTING WIND ENERGY(HEW Module):
The present invention relates to a combination air purifier and wind generator. The combination air purifier and wind generator includes a wind-receiving unit installed on a central shaft for driving an electric generator mounted in housing, and an air purifier. The wind-receiving unit includes a governor fixed to an upper end of the central shaft, a spherical blower installed in the middle of the central shaft, and planar magnetic rotary plates installed at a lower end of the central shaft for receiving both artificial and natural winds. Lower magnets are attached to the top of the housing while upper magnets having the same polarity as the lower magnets are attached to the bottoms of the magnetic rotary plates to face the lower magnets. The air purifier includes two air inlets; one air outlet; a copper net, a silver net and a hard charcoal/zeolite net disposed within the air purifier for purifying air introduced there into; and a blower interposed between the silver net and the hard charcoal/zeolite net.
Even though the intensity of the wind increases, the shaft of the generator is prevented from being accelerated beyond a predetermined speed so that any damage to the generator can be avoided and its life can be prolonged, and which includes a multi-stage wind-receiving unit for causing the shaft to be easily rotated even with the gentle natural wind and the artificial wind from the blower so as to enhance the electricity generation.
HEW Module consist of electric generator installed in a box-type housing, a central shaft protruding beyond the top of the box-type housing and having a lower end with a gear coupled thereto for engaging with a gear of the electric generator and transmitting a rotational force, and a wind-receiving unit coupled to the central shaft. The wind-receiving unit includes a governor fixed to an upper end of the central shaft, a spherical blower disposed below the governor, and planar magnetic rotary plates disposed below the blower for receiving both artificial and natural winds. The governor includes a plurality of cylinders of which one ends are fixed to the central shaft, a plurality of wind cups of which one ends are slidably installed within the respective cylinders, and springs connected with the inner ends of the wind cups for elastically supporting them. Lower magnets are attached to the top of the box-type housing, and upper magnets having the same polarity as the lower magnets are disposed on the bottoms of the respective magnetic rotary plates to face down toward the lower magnets.
FIG. 1 is a sectional view of a combination air purifier and wind generator according to the present invention.
FIG. 2 is a section view taken along line A—A of FIG. 1.
BRIEF DESCRIPTION OF DRAWINGS:
Hereinafter, a preferred embodiment of a combination air purifier and wind generator according to the present invention will be described in detail with reference to the accompanying drawings.
FIGS. 1 and 2 are sectional views of a combination air purifier and magnet-type wind generator according to the present invention. Reference numeral 1 designates a box-type housing, 2 designates a wind-receiving unit, 3 designates an air purifier, and 10 designates an electric generator.
Each of the electric generators 10 is a conventional model for converting mechanical energy into electrical energy. A shaft of the electric generator 10 is coupled with a gear 11.
The electric generator 10 is installed within the box-type housing 1 made of steel frame and plate, or the like. The gear 11 of the electric generator 10 is engaged with and rotated together with a gear 12 coupled with a lower end of a central shaft 13 which penetrates through the center of a top surface of the box-type housing 1 and is positioned in the box-type housing 1. Thus, the gear 11 connected to components for generating electricity, such as a coil and a magnet that are not shown in the figures, within the electric generator 10 converts the mechanical energy into the electrical energy.
The wind-receiving unit 2 installed on the central shaft 13 includes three wind-resistant bodies: a governor 7 fixed to an upper end of the central shaft 13, a spherical blower 6 disposed below the governor, and planar magnetic rotary plates 5 disposed below the blower 6 for receiving both artificial and natural winds.
The governor 7 fixed to the upper end of the central shaft 13 is a horizontal centrifugal rotary body and includes a plurality of cylinders 73 of which one ends are fixed to the central shaft 13, a plurality of wind cups 72 of which one ends are slidably installed within the respective cylinders 73, and springs 75 connected with the inner ends of the wind cups 72 and inner walls 74 of the cylinders 73 for elastically supporting them.
The blower 6 installed in the middle of the central shaft 13 takes the shape of a sphere defined by a plurality of grouped winglets and can obtain a rotational force even with gentle winds generated in all directions. Further, since the blower 6 is disposed in the middle of the central shaft, it can serve to provide a starting force to the central shaft 13 upon existence of the gentle wind while keeping the balance of the central shaft 13, thereby preventing the central shaft 13 from stopping.
Each of the planar magnetic rotary plates 5 installed at a lower portion of the central shaft 13 is made in the form of a rectangular bucket as shown in FIG. 2. Upper magnets 4′ are attached to the bottoms of the respective magnetic rotary plates. Repulsive forces are produced between the upper magnets 4′ and lower permanent magnets 4 (20,000 gauss or higher) that have the same polarity as the upper magnets and are attached to the top of the box-type housing 1, and thus, a levitation phenomenon occurs therebetween. Accordingly, weights of all the components installed on the central shaft 13 become zero, so that the magnetic rotary plates can be easily rotated even with the gentle wind by means of a rotational action resulting from the repulsive forces between the magnets having the same polarity. Consequently, the rotational ability of the magnetic rotary plates can be improved even under any windy conditions. Particularly, the magnetic rotary plates are constructed to be forcibly rotated with the artificial wind discharged from a blower 36 of the air purifier 3 to be described later, even in the gentle natural wind or windless state.
Moreover, as shown in FIG. 2, the wind cups 72 of the governor 7 and the magnetic rotary plates 5 are staggered so that the wind sequentially and consecutively encounters the wind cups 72 and the magnetic rotary plates 5. Thus, a continuous rotational force is transmitted to the central shaft 13.
The air purifier 3 is fixedly installed on a side of the top of the box-type housing 1 and is Y-shaped by including two air inlets 31, 31′ and one air outlet 32. One of the air inlets 31 is horizontally in line with the air outlet 32 while the other air inlet 31′ is formed to incline upward, so that a wind can be generated due to a change in ambient airflow resulting from drawn air streams and a discharged air stream. Further, a copper net 33, a silver net 34 and a hard charcoal/zeolite net 35 for purifying the polluted air are disposed to be spaced apart from one another at predetermined intervals within the air purifier so that the polluted air is caused to pass through them and to be purified. The blower 36 is interposed between the silver net 34 and the hard charcoal/zeolite net 35 so that the air is forced to be drawn and discharged. Mosquito nets 37, 37′ can be installed at the air inlets 31, 31′ to prevent insects from entering the air purifier.
Reference numeral 8, which has not yet been explained, designates a bearing for ensuring smooth rotation of the central shaft 13.
Next, the operation of the combination air purifier and wind generator according to the present invention will be described.
When the box-type housing 1 of the combination air purifier and wind generator is installed at a desired location such as the interior of a room or a roadside, a no-load state suitable for rotation of the central shaft 13 is achieved by means of the repulsive forces between the upper magnets 4′ in the magnetic rotary plates 5 and the lower magnets 4 attached to the box-type housing 1. Thus, even though a very gentle wind encounters the blower 6, the wind cups 72 of the governor 7 and the magnet rotary plates 5, the central shaft 13 immediately begins to be rotated and is further accelerated by the action of the repulsive forces between the lower and upper magnets 4, 4′. Accordingly, the desired electricity can be easily obtained through the electric generators 10.
In order to reduce loads and cause the rotational speed of the central shaft 13 to reach a normal rotational speed in a short time upon initial rotation of the central shaft 13, the wind cups 72 of the governor 7 are maintained in a state where they are pulled toward the central shaft 13 by the springs 75. The wind cups 72 are kept in the initial starting state without any change in their state so as to facilitate the rotation of the central shaft 13 until rated electricity is provided through normal electricity generation.
The initial rotation of the central shaft is facilitated even with the gentle wind by means of the repulsive forces between the lower and upper magnets 4, 4′, the inward positioned state of the wind cups 72, and the spherical blower 6. Further, the magnetic repulsive forces and the inward positioned state of the wind cups 72 continuously assist the central shaft 13, which has begun to be rotated, to cause its rotation speed to reach the rotational speed at which the desired rated electricity can be generated.
Meanwhile, if the intensity of the wind is increased in a state where the rotational speed of each electric generator 10 reaches a normal rotational speed, the rotational speed of the central shaft 13 is also increased and thus the electric generator may be burdened with an overload.
In order to protect the electric generator 10 against the overload, if the central shaft 13 is rotated with a rotational force larger than a predetermined rotational force, the wind cups 72 of the governor 7 are urged outward from the center of the central shaft 13 by centrifugal forces to reduce its rotational force. On the contrary, if the rotational force of the central shaft 13 begins to be reduced, the wind cups 72 are pulled toward the central shaft by means of the restoring forces of the springs 75 so as to reduce the centrifugal forces. Therefore, it is possible to always maintain the normal rotational speed of the central shaft 13.
Meanwhile, in the very gentle natural wind state or the windless state, the blower 36 of the air purifier 3 is operated using either electric power, which has been generated by the electric generators 10 and then stored, or separate electric power. With the operation of the blower 36, the ambient polluted air is caused to be introduced into the air inlets 31, 31′. This causes a change in airflow thereabouts which in turn generates a wind. The introduced polluted air is purified by passing through the copper net 33, the silver net 34 and the hard charcoal/zeolite net 35, which are disposed within the air purifier. The purified air is discharged and then causes the magnetic rotary plates 5 to be rotated as shown in FIG. 2. As the magnetic rotary plates 5 are rotated, the blower 6 and the governor 7 installed above the magnetic rotary plates are rotated together therewith to increase the rotational force. Finally, the central shaft 13 operates the electric generators 10 so that the electricity is generated.
STORAGE SYSTEMS:
The hybrid energy-storage system(HESS) contains two supercapacitors of different sizes and a switching circuit. An adaptive-learning switching algorithm controls the switching circuit. This algorithm predicts the available source energy and the period that the sensor node will remain in the high-energy area. The algorithm dynamically switches between the supercapacitors according to available ambient RF, Vibration, Solar, EM and Thermal energy. Extensive simulation and experiments evaluated the proposed method. The proposed system showed 40% and 80% efficiency over single supercapacitor system in terms of the amount of harvested energy and sensor coverage.
In a HESS typically one storage (ES1) is dedicated to cover “high power” demand, transients and fast load fluctuations and therefore is characterized by a fast response time, high efficiency and high cycle lifetime. The other storage (ES2) will be the “high energy” storage with a low self-discharge rate and lower energy specific installation costs .
Main advantages of a HESS are:
Reduction of total investment costs compared to a single storage system (due to a decoupling of energy and power, ES2 only has to cover average power demand)
Increase of total system efficiency (due to operation of ES2 at optimized, high efficiency operating points and reduction of dynamic losses of ES2)
Increase of storage and system lifetime (optimized operation and reduction of dynamic stress of ES2)
Energy storage coupling architecture in HESS used in MEPAP:
The coupling architecture in MEPAP consists of two DC/DC-converters. Here the parallel converter topology is very common. The additional DC/DC-converter associated with the “high-power” storage is in charge of the voltage regulation of the DC-bus. It helps to operate the “high-power” storage in a broader voltage band, and hereby the available storage capacity is better utilized.
Frequency decoupling used in MEPAP is well suited for real-time applications. It is accomplished by a simple low-pass filter or by advanced filter concepts based on wavelet or Fourier transform. The low frequency component supplies the set-point value of the power controller of ES2, the high frequency component is covered by ES1.
DESIGNS
PIEZOELECTRIC TRANSDUCER
ELECTRICITY from ELECTROMAGNETIC RADIATION
Metasurfaces
MoS2 layer
RF CIRCUITS
Photovoltaic (PV) solar panel:
Thermoelectric Generator Module(TEG)
STORAGE SYSTEMS
RESEARCH TEST AND IMPACTS
RESEARCH TEST ON PIEZOELECTRIC MATERIAL AND ENERGY FROM VIBRATION:
RESEARCH TEST ON ENERGY HARVESTING FROM EM RADIATION,METAMATERIALS AND RECTENNA:
Output power Usually, the outcome of a WPH system is DC power, which is characterized by load voltage VDD and current IDD. Measuring open-load voltage demonstrates the performance of WPH in general since VDD and IDD depend on load impedance. If the load is a sensor, VDD is more important than IDD while in applications like electrolysis or LED, current is the dominant parameter
Comparison of power-harvesting antenna:
Comparison of voltage multiplier:
R as:
Pr= PtGtGr (λ/4πR)2
where Gt and Gr are antenna gains, and λ is the wavelength of the transmitted signal. The received signal strength, diminishes with the square of the distance, requires special sensitivity considerations in the circuit design. Moreover, FCC regulations limit the maximum transmission power in specific frequency bands. For example, in the 900 MHz band, this maximum threshold is 4 W. Even at this highest setting, the received power at a moderate distance of 20 m is attenuated down to only 10 μW.
(a) The concept of a Huygens’ metasurface [38]. (b) A loaded strip-loop unit cell. (c) A reflection less refracting bi-anisotropic metasurface tested using a quasi-optical system at 20 GHz. (d) Full-wave simulation of reflection less refraction for normal incidence to 71.8 degrees.
(a) A collimating Huygens’ metasurface lens. A ‘spider’ unit cell has been used. (b) Beam collimation in the E-plane at 35.2 GHz. Top view of the metasurface metallization pattern. (c) Concept of a cavity excited metasurface to synthesize arbitrary antenna patterns. (d) Synthesized one parameter Taylor’s distribution with side lobes <-20Db. Sketch of metamaterial converter for the generation of flying doughnut pulses. The metasurface consists of azimuthally oriented dipole resonators arranged in concentric rings. The inset at the bottom left of the figure shows a false color image of a flying doughnut pulse, experimentally generated by a plasmonic metasurface (fabricated by focused-ion-beam milling.
Schematics of TPV (a) and STPV (b) systems. Metasurface emitters are heated with the heat source (TPV) or with solar irradiance in STPV using broadband absorbers and the emission is used to power PV cells.
Waveform-dependent absorber which uses a diode bridge and RC circuit to selectively respond to the envelope of the incoming signal rather than simply its frequency.
Generic representation of a nonreciprocal metasurface, with bias field F0. (b) Magnetless transistor-loaded ring metamaterial particle, mimicking electron spin precession in ferrites, with current J0 operating as the biasing field. (c) Reflective Faraday ring metasurface based on the particle in (b). (Left) Perspective view of the metasurface structure. (Right) Faraday rotation angle versus frequency obtained theoretically from the equivalent magnetic Polder tensor (dashed and solid curves) and experimentally from the prototype shown in the insets (dots) .
(a) Calculated dispersion diagram of a coaxial cable loaded with circular metallic inclusions. (b) calculated effective index of refraction of a parallel-plate glide-symmetric structures .
RESEARCH TEST ON PHOTOVOLTAIC CELL AND SOLAR ENERGY
FF is determined by the relation Vmpp /Voc .
RESEARCH TEST FROM EXHAUST ENERGY(TEG MODULE)
Speed of the vehicle is the most important factor for the power generated by a TEG. For better Performance of TEG, speed of vehicle should be greater. As the exhaust temperature is higher, more energy is available for the conversion into electrical energy. There is increase in optimal length and reduction in optimal width based on dynamic optimization simulations when the Temperature of the exhaust increases.
The efficiency and power of a TEG remarkably depends on the temperature. Given figure shows the temperature of inlet and outlet when the engine is operated between 2500 rpm to 3400 rpm. As the engine speed increases, the temperature difference between the surfaces of TEM increases rapidly, hence the output power also increases.
It was found that there is a possibility of generating 1.4 kW of electricity form the heat recovery system in the exhaust of the car if the power produced by the engine is 150 kW and also found that it is possible to produce electricity of 5.9 MW by a waste heat energy recovery system of 500 MW of gas turbine power plant.
Another experiment has been performed for checking the power output of TEG by changing the speed of vehicle. The speed of the vehicle were 48.3, 80.6 and 112.7 km/hr and the result was the output power increased as speed of vehicle increases correspondingly mass flow rate of exhaust and inlet temperature increased as per the speed. At the speed of 80 km/hr, the power output with 72 mm * 4 mm TEM was 75 W.
Fig1. Variation in temperature due to variation in speed.
Fig2. Variation in power production.
TEG Power Generation Calculation:
The equation involved in calculation of the performance of a TEG is
Z = α2 / kR,
Z is a figure of merit of thermoelectric material, R is the electric resistivity
k is a thermal conductivity and
α is a Seebeck coefficient which is
α = ΔV / ΔT,
T ͞ is the average temperature of cold and hot plate of a TEM and when multiplied by Z it makes it Dimensionless.
ZT ͞ = α2 T ͞ /KR
And
T ͞ = (TH +TC ) / 2
As per the second law of thermodynamics,
ῃ = TH – TC / 2
The maximum efficiency of conversion of a TEG can be found using
The output efficiency of a TEG mainly depends on two variables: the temperature and MFR of exhaust. Maximum power output and corresponding heat transfer can be obtained by maximizing the
MFR ratio. As the size of a TEG increases, the output power also increases.
The awesome spectacle of a black hole ripping a star to shreds can be seen in this striking new visualization from the Deutsches Elektronen-Synchrotron (DESY), a particle accelerator lab in Hamburg, Germany.
Such events are known as stellar tidal disruptors, and they are fairly rare, occurring just once every 10,000 years in a typical galaxy, according to NASA. Stars are typically flung toward a ravenous black hole after interacting gravitationally with another star or massive object, only to become stretched and devoured should they come too close to the black hole’s maw in a process called spaghettification.
Gravitational tidal forces, similar to the ones that cause the moon to raise tides on Earth, are responsible for most of the destruction. At first, the star’s outer atmospheric layers will get pulled toward the black hole, spinning around its edge like water going down a drain and forming what’s known as an accretion disk, as the video depicts.
Surprisingly, the black hole only consumes about 1% of a star’s mass, according to NASA. The majority will actually get catapulted back out into space in the form of enormous jets of energy and matter that shoot from the black hole’s central region.
These jets can sometimes light up the cosmos, allowing astronomers on Earth to catch glimpses of distant black holes, which are otherwise mostly invisible. Tiny, ghostly particles called neutrinos will also be flung from the black hole, occasionally giving researchers insights into processes occurring during the consumption event.
Some of the star’s material does fall past the event horizon, the point after which nothing, including light, can escape. The visualization shows some of the strange optical effects that the event horizon produces, such as bending light so much that regions at the back of the accretion disk can be seen from its front.
Witnessing how swiftly the black hole dismembers and dispatches the star is an excellent reminder that no one should want to get anywhere near such a powerful object any time soon.
Chinese scientists are planning to fire more than 20 rockets into space to divert an asteroid impact that has a small chance of one day ending life on Earth.
Their target is an asteroid named Bennu, a 85.5-million-ton (77.5 million metric ton) space rock that is on track to swoop within 4.6 million miles (7.5 million kilometers) of Earth’s orbit between 2175 and 2199. Although Bennu’s chances of striking Earth are slim — at just 1 in 2,700 — the asteroid is as wide as the Empire State Building is tall, meaning that any collision with the Earth would be cataclysmic.
The estimated kinetic energy of Bennu’s impact with Earth is 1,200 megatons, which is roughly 80,000 times greater than the energy of the bomb dropped on Hiroshima. For comparison, the space rock that wiped out the dinosaurs delivered about 100 million megatons of energy.
Scientists at China’s National Space Science Center calculated that 23 Long March 5 rockets, each weighing 992 tons (900 metric tons), pushing against the rock simultaneously would be necessary to divert the asteroid away from a fatal course by nearly 6,000 miles (9,000 km) — 1.4 times the Earth’s radius. Their calculations are detailed in a new study published in the forthcoming Nov. 1 issue of the journal Icarus.
A mosaic image of the asteroid Bennu, taken by NASA’s OSIRIS-REX spacecraft. (Image credit: NASA/Goddard/University of Arizona)
“Asteroid impacts pose a major threat to all life on Earth,” Mingtao Li, space science engineer of the National Space Science Center in Beijing and lead author of the new study, wrote in the paper. “Deflecting an asteroid on an impact trajectory is critical to mitigating this threat.”
The Chinese scientists’ plan would sidestep the need to stop the asteroid by more direct, yet riskier, means — like the atomic bomb method popularized by Bruce Willis in the film “Armageddon.” In reality, nuking the incoming space rock would break it into multiple smaller chunks that could still collide with Earth, leading to devastating consequences.
The Chinese plan follows a similar, yet slightly more costly, past proposal made by the United States. The NASA plan, called Hypervelocity Asteroid Mitigation Mission for Emergency Response (HAMMER), would send a fleet of 30-foot-tall (9 meters) spacecraft with battering rams to bump the asteroid off course. NASA simulations suggest that 34-53 blows from HAMMER spacecraft, launched 10 years before Bennu collides with Earth, would be needed to shift the asteroid.
NASA and the ESA (European Space Agency) will be the first to test a novel asteroid nudging method in two joint missions launching November 24 of this year. The DART mission (Double Asteroid Redirection) will send a spacecraft to arrive a year later at the 7 million mile (11 million kilometer) distant Didymos asteroid system. Once there, the NASA spacecraft will slam into Didymos’s moonlet — a rock in orbit around the asteroid. The ESA’s mission, Hera, will then monitor how DART has budged the moonlet off-course.
Bennu is a B-type asteroid, which means that it contains high amounts of carbon and, potentially, many of the primordial molecules present when life emerged on Earth. NASA already sent a spacecraft, called Osiris-Rex, in pursuit of samples from the asteroid. Osiris-Rex arrived above Bennu in October 2020, floating above it for long enough to collect loose pieces from its surface with its 10-foot (3 m) arm. Osiris-Rex is expected to return to Earth with its spoils in 2023.
Long March 5 rockets are the workhorses of China’s space program, completing most of the deliveries to China’s space station and launching Chinese probes to Mars and the moon. The rockets have caused concern in the past due to their uncontrolled reentry to Earth. In May, the 22-ton (20 metric ton) section of a Long March 5 rocket fell to Earth, either burning up or landing in the sea near the Arabian peninsula. In May 2020, fragments from a previous March 5 rocket were believed to have crashed into two villages in the Ivory Coast.
Long March 5 rockets are the workhorses of China’s space program, completing most of the deliveries to China’s space station and launching Chinese probes to Mars and the moon. The rockets have caused concern in the past due to their uncontrolled reentry to Earth. In May, the 22-ton (20 metric ton) section of a Long March 5 rocket fell to Earth, either burning up or landing in the sea near the Arabian peninsula. In May 2020, fragments from a previous March 5 rocket were believed to have crashed into two villages in the Ivory Coast.
Polar biologists found a species of moss during their search to the ice-covered continent in 2017. It took scientists five years to confirm that the species had been discovered for the first time.
The Indian biologists, from the Central University of Punjab, have named the specie Bryum Bharatiensis(Bharati which means learning) . This arduous process of identification involved the collection of samples, and then five years of sequencing DNA and comparing its forms with other plants.
Prof Felix Bast, one of the six-month-long expedition scientists to the continent discovered the dark green specie at Larsemann Hills, in January 2017, while inspecting the Southern Ocean, located near Bharati, one of the remotest research stations in the world.
“The big question was that how does moss survive in this landscape of rock and ice landscape,” Prof Bast said as per the fact that plants needs nitrogen, along with potassium, phosphorus, sunlight and water to survive. Which here works with the fact that only 1% of Antarctica is ice free.
Later, scientists figured out that this moss mainly grew in areas where penguins bred in large numbers. Penguin poop contains nitrogen. “Basically, the plants here survive on penguin poop. It helps that the manure doesn’t decompose in this climate,” said Prof Bast.
Now comes the sunlight. Scientists say they still fully don’t understand and is unsure with fact that how the plants survive under thick snow during the six winter months with no sunlight and temperatures dropping to as low as -76°C.
They claim that the moss “dries up to a dormant stage, almost to a seed” at this time, further they germinate again during summer in September when they start getting sunlight again. And then the dried up moss absorbs water from the melting snow.
Later after collecting the required samples, Indian scientists spent five years sequencing the plant DNA and comparing its form with other plants.
“Antarctica is getting greenified. Many temperate species of plants that previously could not survive in this frozen continent are now seen everywhere because of the warming up of the continent,” said Prof Bast.
The scientists were highly worried about the “alarming evidence” of climate change that they saw during the inspection. They say they came across melting glaciers, crevasse-infested ice sheets and glacial melt-water lakes on top of ice sheets.
Bharati is located between Thala Fjord and Quilty Bay, in Antarctica. The specie has been named after the Indian research station called Bharati.
“The finding that Antarctica was greenifying was disturbing,” said Prof Raghavendra Prasad Tiwari, a leading biologist and the vice chancellor of the Central University of Punjab.
This is the first time India has discovered a plant species in the four decades since it first set up a research station in the continent. A proud moment for Indians.
Menstruation is the actual time when women bleed. And the entire time between 2 menstruation is called Menstrual cycle.
The excessive pain in menstruation is not normal and this condition is called Dysmenorrhea.
As everyone says period blood is dirty blood but in reality it is not the rejected blood of the body. It is less concentrated than normal blood and it has less blood cells.
“Smuggling pads to the bathroom like it’s some sort of illegal thing gotta be the worst adaptation to patriarchy”
Transgender men may still get their periods, just as transgender women might not have periods.
Girls miss their school 1-2 days every month and it affect their studies and education.
We bleed 5 days in a month and it really sucks…
I am a girl Yes, I am a girl And like every other girl, I also go through those painful days The day which comes and goes every month. When the day comes, I feel like I’m in hell I don’t have to touch stuff I am not allowed to go to bed I am not allowed to go to the place of worship. I am not allowed to say anything I am not allowed to cry because of this cycle I feel like thousands of hammers are breaking my bones. I go through all these things like – mood swings, cramps, frustration, anger, and much more. But I am not allowed to cry I am not allowed to cry even when I feel the worst. The reason behind this is that I am a girl I am a girl And I always taught to hide this I always have to do that I always have to be away from everyone I have to hide this just because I am a girl And I am on my periods
How it feels when I am on my periods and no one understands the pain I am going through…
Superstitions
INDIA
Yoan’t enter a kitchen or cook food for anyone else.
Can’t enter a place of worship.
only enter a place of prayer once we’ve washed our hair on or after the fourth day.
Must wash our hair on the first day of our period to clean ourself completely. Buttt on the contrary…
If we wash our hair, our flow will be less and it will affect our fertility later in life.
Italy
Can’t touch plants.
Everything we cook will be a disaster.
UK
Tampons will break our hymen and make us impure.
Can’t take a bath.
Bolivia
can’t cradle babies or we’ll cause them to get sick.
As we know it is just because improper balance of estrogen and progesterone leads to the breakdown of endometrium lining that ultimately causes Menstruation every month.
we were taught to hide this. Why, why do we have to hide this if it is natural.
This menstrual cycle is a natural thing and this is the reason why only women carry babies.But despite this, we all try to hide this.Everyone knows that this menstrual cycle always comes during it’s duration but everyone tries to hide it.When it is natural then why do we feel shame for this. Why??
Biofuel is made out of biomass and this biomass consist of the organic remains called organic material. World biofuel day is observed on 10th august every year and it is important to discuss about biofuels as they can be an answer to the growing energy demand with no harms to environment. Biofuel industries play a significant role in every country. Biofuel can contribute tremendously into the economy of both developed and developing countries. These are available in all three forms – solid, liquid and gas and based on the composition, making process and other criteria they can be further categorised. But, how are they different from any other fuel. The most useful feature of biofuel is being a renewable source of energy, a renewable source of energy creates less pollution and serves many added advantages. Today, when the goals are sustainable development, pollution free environment, better alternatives and meeting the growing demand of people in limited resources biofuel is a remarkable resource some of the common bio fuels are Bioethanol, Biodiesels and biogas etc. Apart from being renewable the production process of bio fuel is also a notable feature, as mentioned before bio fuel is produced from organic material which is widely and easily available. Whereas, on the other hand other fuels which are mostly made from fossil available in a limited quantity, they can get exhausted easily if the requirement increases. Thus, in such a scenario bio fuel can help. Biofuels can be produced easily in any area, just like most of the countries are producing within there boundaries this reduces the dependence on the imported fuels. Despite having a number of advantages, there are disadvantages associated with biofuels like: • Production of biofuel requires water in large amount. If there is an insufficient supply of water it can disturb the production process. • The quantity difference with biofuel, it can not generate same amount of energy in the same quantity as some other fuel. Which ultimately decreases the efficiency of biofuel in comparison to other fuels. • Also, it requires huge area to setup a biofuel plant in case there is shortage of land then it can not be setup or the land on which the setup is done, it can not be used for any other pourpose so both ways it is a disadvantage. The advantages and disadvantages are almost equal in numbers and the fact is that biofuel has surely bought changes in the field of energy production for many countries, it has expanded energy production, lesser carbon emission into the atmosphere and reduced the total dependence on fossil fuels. It is observed that the fuel prices are rising every year and they cause global warming at the same time biofuel can be an answer to all such problems specially the countries who are willing to invest in environment friendly product that will be beneficial for the development of the nation. The national leaders worldwide are looking for better alternatives to have a bright future and Biofuels is already one of those, various schemes are policies are framed and implemented at national level for the same.
If you believe that if I say Tamil people developed Nanotechnology 2600 years ago. Yes, it is true. Researches say that the pots which the tamil people used then, was coated using Nanotechnology. This blog is going to be about the carbon nanostructures that were found in Keezhadi. Scientists found the 2600 years old earthenwares in Keezhadi coated with carbon nanotubes. Carbon nanotubes have high thermal and electrical conductivity and very high mechanical strength and also very light in weight.
Many may have heard about Keezhadi, the archeological site which portrays the rich civilization of Tamil people in the sixth century BC. Many steps of excavation was made in Keezhadi. Huge remains of pottery were found. When scientists experimented on the pot remains, they found a unique black coating over it. They also discovered that Carbon Nanotubes were in the black coating. These were the oldest known nanostructures on the Earth right now.
In the modern era, Carbon Nanotubes was developed in 1991 which is called CNT. From 1991 to 2006, in America, more than 4500 applications for getting patent rights for Nanotubes have been submitted. This data is from a Scientific paper.
A graphite consists of layers of Graphene laid one over the other. If a single layer Graphene is taken and folded cylindrically/ round, then it is called Carbon Nanotubes. These Carbon Nanotubes and Graphene comes under SP2 bond type. Diamond cones under SP3 bond type. So Carbon Nanotubes and Graphene are tougher than diamonds. So Carbon Nanotubes and Graphene are called as “Wonder Material” by the scientists. Nanotube is used in the Bullet proof vests.
How many types does the Carbon Nanotubes consist of? Carbon Nanotube has three typpes – Armchair CNT, Zigzag CNT and Choral CNT. The direction in which they are shaped will determine the type. After they have completed a Nanotube it is called Single-Walled Carbon Nanotubes (SWCNT). If there are layers of these, then it is called Multi-Walled Carbon Nanotube (MWCNT).
Can these SWCNT or MWCNT created naturally?
There are scientific papers released in 2008 and 2017. In any of those, there is no proof that they occured naturally. So according to science, the possibility for Nanotubes to occur naturally is very low. So one should have helped the process in the ancient era. An external force in specific level is required for its formation. A paper in 2008 says that from 2020 to 2025, the carbon nanotubes would be a billion dollars business. Such a precious material is found in Keezhadi now. But no one is ready to talk about it. But we should know about our history.
Gravity is science. But it existed for billions of years. When a person named it as “Gravity” it was changed into a Scientific term but still it is a Natural Occurance. That is the Reality. The Tamils in Ancient times were dependent on nature. Their way of using Nature to their will was unique. They thought about how to use it to improve their lifestyle. The Tamils were one step ahead of research. So the Tamils in the ancient times knew that Carbon Nanotubes and Graphene were the toughest materials which were very high electrical and heat conductors. Take only the toughness property. So Tamil people who lived 2600 years ago, needed the toughest material available on Earth. Tamils had metals. But they had clay in large quantities. The Tamils wanted to toughen up the clay. So they built aypots but it broke soon. So they discovered that to toughen up the claypots, they should heat them. These heated pots were not so tough. Now they wanted a coating to be done upon the pots. So through trial and error method they did a coating in the claypots. They would have spent many years to complete the research. After many trials with many materials which resulted in failures, the Tamils would have developed the carbon nanotubes.
How many degrees Celsius was required?
Nearly 1100° to 1400° Celsius. In these extreme conditions only, they could have created the Carbon Nanotubes. The Scientists of today say that the materials used for coating may be Carbon rich materials. So when we say Carbon rich materials, it could be Vegetable oil or any other material. When it is combined with the claypots under extreme heat, the carbon nanotubes may be created. The claypots would consist of Iron content. So iron and carbon together may produced Carbon Nanotubes, a material which is 200 times tougher than steel. So through this method, the ancient Tamils would have created Carbon Coated claypots which lasted for many years. Due to the toughness of carbon nanotube, the claypots has been discovered as Archaeological remains in Keezhadi.
Eduindex 
You must be logged in to post a comment.