MR. All right, we all know that the sun's energy creates heat and light. But it can also be converted to make electricity, and lots of it. One technology is called solar photovoltaics or PV for short. You've probably seen PV panels around for years, but recent advancements have greatly improved their efficiency and electrical output. Enough energy from the sun hits the earth every hour to power the planet for an entire year. Here's how it works. You see, sunlight is made up of tiny packets of energy called photons.
These photons radiate out from the sun, and about 93 million miles later, they collide with a semiconductor on a solar panel here on Earth. It all happens at the speed of light. Take a closer look, and you can see the panel is made up of several individual cells, each with a positive and a negative layer, which create an electric field. It works something like a battery. So the photons strike the cell, and their energy frees some electrons in the semiconductor material. The electrons create an electric current, which is harnessed.
By wires connected to the positive and negative sides of the cell. The electricity created is multiplied by the number of cells in each panel and the number of panels in each solar array. Combined, a solar array can make a lot of electricity for your home or business. This rooftop solar array powers this home, and the array on top of this warehouse creates enough electricity for about a thousand homes. OK, there are some obvious advantages to solar PV technology. It produces clean energy. It has no emissions, no moving parts, it doesn't make any noise and it doesn't need water.
Energy 101 Concentrating Solar Power
Bjbj Take the natural heat from the sun, reflect it against a mirror, focus all of that heat on one area, send it through a power system, and you've got a renewable way of making electricity. It's called concentrating solar power, or CSP. Now, there are many types of CSP technologies. Towers, dishes, linear mirrors, and troughs. Have a look at this parabolic trough system. Parabolic troughs are large mirrors shaped like a giant U. These troughs are connected together in long lines and will track the sun throughout the day. When the sun's heat.
Is reflected off the mirror, the curved shape sends most of that reflected heat onto a receiver. The receiver tube is filled a fluid. It could be oil, molten salt something that holds the heat well. Basically, this super hot liquid heats water in this thing called a heat exchanger and the water turns to steam. The steam is sent off to a turbine, and from there, it's business as usual inside a power plant. A steam turbine spins a generator and the generator makes electricity. Once the fluid transfers it heat, it's recycled and used over and over.
And the steam is also cooled, condensed and recycled again and again. One big advantage of these trough systems is that the heated fluid can be stored and used later to keep making electricity when the sun isn't shining. Sunny skies and hot temperatures make the southwest U.S. an ideal place for these kinds of power plants. Many concentrated solar power plants could be built within the next several years. And a single plant can generate 250 megawatts or more, which is enough to power about 90,000 homes. That's a lot of electricity.
No, Solar Panels Dont Suck Up All The Suns Sun Juice
Gtgt THERE ARE A LOT OF NEW FORMS OF ENERGY THAT ARE ACTUALLY GROWING ALL ACROSS THE COUNTRY. WIND, SOLAR, AND TO BE FAIR TO WOODLAND IN NORTH CAROLINA, THEY HAVE DONE THIS SEVERAL TIMES, THEY HAVE THREE SOLAR FARMS THAT THEY APPROVED IN THE WOODLAND TOWN COUNCIL SO FAR. A FOURTH ONE HAD COME UP, THAT IS WHERE WE RAN INTO SOME ISSUES. SOME CONSTITUENTS CAME IN AND ARGUED, AND TO BE FAIR TO THE LEGISLATORS, THEY DID NOT MAKE THESE ARGUMENTS, CONSTITUENTS DID. LET ME QUOTE THE ROANOKECOWAN NEWS HERALD.
Gtgt I ALMOST MADE IT AN ENTIRE HOUR WITHOUT THE COUGH, HOLD ON. gtgt ALMOST. gtgtHERE IS WHAT I AM SURE OF, THERE IS NO BROWN VEGETATION NEAR THE SOLAR PANEL, BECAUSE THE SOLAR PANEL IS SUCKING UP THE OTHER PHOTOSYNTHESIS FROM THE AREA. OH NO, YOU SUNLIGHT, YOU ARE NOT GOING OVER THERE. THE SOLAR PANEL IS GRABBING YOU. THE SOLAR PANELS FOR THE SUNLIGHT THAT HITS THE SOLAR PANEL. JANE MANN CONTINUED gtgt SCIENTISTS COULD TELL YOU, AND YOU ARE A FORMER SCIENCE TEACHER. I COULD TELL YOU. BUT APPARENTLY YOU WOULDN'T LISTEN,.
SO MAYBE WE SHOULDN'T WASTE OUR BREATH. BOBBY MANN, ANOTHER FAMILY MEMBER, CAME WITH HER, AND HE HAD ANOTHER THEORY gtgtTHOSE ARE TWO DIFFERENT THEORIES, TO BE FAIR, PUT BIZARRELY IN THE SAME SENTENCE. I DON'T KNOW WHY BUSINESSES WOULD NOT COME TO WOODLAND IF THERE WERE SOLAR PANELS, I DON'T UNDERSTAND THAT ALL. THEY ALSO CLAIMED, OTHER CONSTITUENTS DID, THAT THE SOLAR PANELS WERE DRIVING THE YOUNG CITIZENS OF WOODLAND AWAY. I DID NOT KNOW MILLENNIALS WERE ANTISOLAR PANELS. I HAD NO IDEA. I DID NOT KNOW THAT THE YOUNG OF WOODLAND.
WERE PERHAPS VAMPIRES AND DID NOT LIKE SOLAR PANELS BRINGING IN ALL THAT SUN. BUT THE FIRST PART OF HIS THEORY I'M FAIRLY POSITIVE ABOUT. HE SAID THE SOLAR FARMS WOULD SUCK UP ALL THE ENERGY FROM THE SUN. I AM SURE THE SUN IS GOING TO BE OKAY. COMPANY REPRESENTATIVES HAD TO COME IN, THIS IS STRATA SOLAR COMPANY ARGUING FOR THE SOLAR FARM, AND THEY HAD TO BOTHER SAYING THIS gtgt THEY ONLY DRAW THE SUNLIGHT THAT FALLS ON THEM. gtgt THEY HEARD FROM CONCERNED CONSTITUENTS WHO APPEARED TO NOT.
HAVE THEIR SCIENCE EXACTLY RIGHT, AND THEY HEARD FROM COMPANY REPRESENTATIVES, TO BE FAIR, BUT ALSO THE SCIENCE ON THIS IS NOT OVERLY COMPLICATED. I AM PRETTY SURE THE SUN HAS NOT BEEN DRAINED OF ALL ITS ENERGY BECAUSE OF SOLAR PANELS. HOW DID THE VOTE COME OUT THE VOTE ON THE SOLAR PANELS THIS TIME AROUND, 31 AGAINST. SORRY, NO MORE SOLAR PANELS IN WOODLAND COUNTY, OR WOODLAND TOWN. THOSE ARGUMENTS WERE PERSUASIVE. gtgt OKAY, WELL, THANK GOD WOODLAND TOWN DID NOT PUT UP ANY MORE SOLAR PANELS, OTHERWISE NONE OF US MIGHT BE ABLE TO USE.
Fox News Germany Sunnier than U.S.
On fox inference they're gonna bring out and expert and i love this fox business so they're talking about solar energy germany receive your ass now is a business expert so forces in those details of why germany is doing better with solar energy and is ahead of us then we are so let's let them at a different the united states simply hasn't figured out how to do so worry effectively right cheaply you look at the country of germany it's working out great for that dot was germany doing correct and it just a.
Small country network there a smaller country and they've got lots of sun right they've got a lot more sound than we do in the problem is a it's a cloudy day and it's raining it not that i have it i mean this nation is is back astin and and beautiful in its and they in its nsa kapiti in california it's a great solution here in the east coast it's just not going to work that's part of his reporter true bonnie do it built you want to check anything.
By those fights news analyst of factories of but you're really got to go on and on tv and say that germany gets more some of the united states let me show you a map here of who is worse on by its color coded so you know you have to take my word for it that purple is not more son you see the us where it's red hot in the southwest that is that po one of the parts the world i guess the most son envelope land that.
Machinations east coast ah lows kid nowhere near sonny's germany total other fail in fact the east coast of the united states get some more son then germany does you see the northwest that's the only thing that's remotely similar pitcher mean color where they get the least amount of sun in the united states box newsman their unbelievable all of a arctic obviously well that that's because it's in the dissident summer there all the time is there any stuff and by the way the real reason well uh. bloomberg business week explains.
Unlike the us germany as a national solar policy groups the reality is term in government emphasizes solar power and guess what their great in solar power and now they have a private industry they make a lot of money up a bit and they're leading the world and a lot of ways a surly uh. far ahead of us not because they have more son because they're actually trying and they have a government that gives a day if you're a fox news for your news yugdarpanh i got bad news for you.
The U.S. Department of Energy Solar Decathlon
Everyday, Americans are generating innovative new ideas to tackle our nation's energy challenges. College students who compete in the U.S. Department of Energy Solar Decathlon are leading the way by showing us how to save money and reduce our carbon footprint with clean energy technologies for the home. This inspiring competition challenges university teams from around the world to build solarpowered houses that are affordable, highly energy efficient, attractive, and easy to live in. To be here and to finally be at the stage to compete is just an amazing feeling.
To win the Solar Decathlon, teams must build an affordable solarpowered home that appeals to consumers and showcases innovative architectural and engineering design. The teams must delicately balance optimal energy production with maximum efficiency. Participants spend nearly two years designing and building their house to be judged in ten contests over two weeks. The result is one of the most highly anticipated design competitions in the world. We tried to keep our systems simple, affordable and reliable, so that anybody could operate and maintain this house. The Solar Decathlon features studentled tours that are free.
To the public. Hundreds of thousands of visitors learn about moneysaving products and gather ideas for their own homes. Millions more hear about the Solar Decathlon and energysaving technologies through national and local news coverage.And thousands more follow the competition online and through social media sites like Facebook and Twitter. We're honored to be a part of something as big as this is. Typically in academia you don't actually get to create the things that you design or theorize and research about and this offers a real rare chance for students to get their hands dirty and.
The Future of Solar Energy is TINY Technology!
The future is huge for tiny technology. Miniaturization is, perhaps ironically, a huge deal. I mean, without it we wouldn't have had the personal computer revolution and we wouldn't have this world we live in now, where we have smartphones and tablets and other devices just as powerful as a computer, that can fit in the palm of your hand. But even these gadgets are gargantuan compared to nanotechnology! See, a nanometer is just one billionth of a meter. And that's kind of hard to imagine, so let me put it to you this way.
Your typical sheet of paper is about one hundred thousand nanometers thick. And at this scale, individual elements are so small you can't even see them with a light microscope. Now as we learn more about how materials behave on the nanoscale, we have more potential applications to use that knowledge practically. I'm talking about how nanotech could help solar panel technology. And fortunately, at a recent meeting of the American Association for the Advancement of Science, or AAAS, they had a panel on just this very subject. Now if you know anything about solar panels you know they have some drawbacks. For example,.
Efficiency they max out at around twenty percent in the field under ideal conditions. They're also rigid, so you can't just put them anywhere you like. And they tend to be expensive because manufacturing them is complicated. But scientists hope that nanotechnology can help address all three of these challenges. Now with efficiency they're looking to nature specifically, moth eyes. You see, moths have these little tiny structures in their eyes that help reflect light back into the eye and it does two things it lets them see better in the dark, and it cuts down.
On reflection so predators can't spot them as easily. With solar panels it could actually make them more efficient by reflecting more of the sun's light into the panel so you lose less in reflection. And when we're talking about flexibility, well nanomaterials are really, really small, and there is the potential to create solar panels that are just a few sheets of molecules thick. They could be as flexible as a sheet of paper, and with that kind of flexibility you could put those pretty much anywhere you wanted to.
And as for price, well, that's the big one. And in the short term I don't think it's going to turn around. But scientists are cautiously optimistic that nanotechnology will let us use new processes, like printing solar panels directly onto a substrate using just a specialized printer. That would actually be less complicated and expensive than traditional manufacturing methods. Now at that meeting of the AAAS, a Dr. Wolfgang Porod gave a talk about Nanoantenna Thermocouples for Energy Harvesting. Which I admit sounds like technobabble straight out of a Star Trek episode.
But it's actually fairly simple once you break it down. A nanoantenna is just an antenna on the nanoscale. These resonate with longwave infrared radiation. And a thermocouple Well that's a component of circuitry that generates a voltage when one part of the thermocouple is a different temperature than other part. So you pair these two together and the antenna generates heat and the thermocouple generates voltage. It could actually help increase the efficiency of solar panels. Now like I said, nanotechnology is a young science and it has lots of different applications.
Across many disciplines. And I'm really excited how such a small technology could have such a huge impact. That leads me to this week's question. When I say the word nanotechnology what do you imagine What does that word mean to you Let us know in the comments below. Then, do me a nanosized favor and share this tutorial with your friends. If you enjoyed it make sure you hit the 'like' button and subscribe to our channel. Then check out these tutorials over here. There's some huge surprises in them.
Advantages Of Solar Energy Renewable Power
Advantages Of Solar Energy Renewable Power thespottydoggreviewsolarpoweradvantages Advantages Of Solar Energy. The sun's energy or the solar energy is the most abundant form of energy available on earth. The sun is capable of giving us more than heat and light. The sun has been one of the biggest factors dictating every living being's stay on the earth. If we go the right path, we can harness more from the solar energy, like generating power for daily use. What are the advantages of solar power The solar energy solution is gaining popularity amongst the alternate energy solutions.
Green energy solution When you look at the solar energy solution, you will realize that it uses absolutely no fuel other than the sun's light. Moreover, it does not release into the atmosphere anything harmful. Cheapest renewable power solution First, the energy comes free. Then, the installation cost is a onetime cost. Finally, the investment is recovered within a few years of installation, making the power generated by solar energy absolutely free. Convenience of storage You cannot store conventional power but you can store solar power for future use. The sun's energy comes to rescue even in the times of darkness! Storing.
It also ensures a 24x7 supply of power, thus saving you from any power outage. Low on maintenance The solar energy systems are easy to maintain. They do not involve high costs or too much effort, thus letting you reap the benefits of the solution comfortably. How can solar power be used Solar power can be used in our everyday lives by adopting the following solar power systems Solar cooking system Solar cooking is about cooking without lighting a fire or using electricity! Before you wonder, let me tell you that solar cooking is not about bland.
Food. You can cook in more ways than one boil, roast, or bake, cook the way you want! The only demand that solar cooking makes of you is being patient it is a matter of more than a few minutes. However, it is not asking for too much given that you will get tasteful and healthy food without worrying about paying your gas or electricity bill. Solar lighting system You can now light up the entire house, use every electrical appliance without thinking about cutting down bills. The solar lighting system lights up.
Worlds Largest SolarPanel Power Plant Opens In Arizona
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