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.
Mass Price Drop in Solar Power No Longer Alternative
Big dropped in solar power prices and hopefully it will make alternative energy no longer alternative there's an article in the economist which talks about the price of photobook uh. the cost of photovoltaic bubble take cells per what but they generate right now in nineteen seventy seven it would cost seven little over seventy six dollars per walked to produce it photo vote apical take cells in nineteen ninetyseven it'd prop to about five dollars per lot and the forecast for the end of this year is only seventy four cents.
Or walked wind farms provide about two percent of the world's electricity and that their capacity is doubling every three years and we really have the opportunity to see huge growth in solar power and that the fascinating thing here is there's two ways to get more efficiency oneway is reduce the cost for the cells such that the collection of one wat goes down but then there's also allowed the cells to harness a higher percentage of the sun's energy which is where we've talked about being stuck with solar power for a while which is.
Solar Power in India DuPont Photovoltaics A Brighter Life
00003500,00013000 gtgt DORJEY STANZIN We live in the most remote and underdeveloped part of Ladakh. In summer we are in paradise. 00016500,00018000 gtgt DORJEY STANZIN In the winter we are in hell. 00026000,00040000 gtgt DORJEY STANZIN We used to rely on diesel generators for electricity. It was costly and dangerous to bring the diesel here, so we often had no electricity for months. 00043000,00052000 gtgt DORJEY STANZIN We believe that the Sun is everything. God has given us the gift of sun, so why not use it 00054000,00058000 gtgt VIVEK CHATURVEDI Moser Baer has a product.
That captures sun and provides energy to the residents there. 00100000,00104000 gtgt VIVEK CHATURVEDI DuPont materials are extremely important as a part of this product 00107500,00120000 gtgt RAJARAM PAI When we combine DuPont Tedlar and DuPont Solamet paste we are making sure that the efficiencies are improved and it ensures that the panel is protected against the harsh climate of Durbuk and ultra violet radiation. 00122500,00135500 gtgt VIVEK CHATURVEDI Having grown up in a small town myself, I understand how it is to live without power. Children need to study, mothers need to cook. What better way to capture sun and provide energy across the globe.
VISIONS CTRLP Australias Largest Solar Cells
Melbourne researchers have successfully created Australia's largest and most flexible solar cells, with the aid of a new printer located at CSIRO. The scientists are part of a collaboration between research and industry partners called the Victorian Organic Solar Cell Consortium VICOSC. This was achieved through the collaboration between The University of Melbourne and the Bio21 Institute, CSIRO, Monash University and industry partners including Bluescope Steel and security printing firm Innovia Security. In just three years the consortium has gone from making cells the size of a fingernail, to cells 10 centimetres square.
They are now able to print organic photovoltaic cells the size of an A3 sheet of paper. The consortium is now leading the world in the ability to print solar cells and using different printing technologies, but this is the beginning of the story. We're still developing the technologies, still developing the materials to enable us to print in a number of different ways for different applications. The new printer can roll out 10 metres of solar cells per minute, which is equivalent to producing one cell every two seconds. Using semiconducting inks, the researchers print the cells.
Straight onto paperthin flexible plastic or steel. So what we're looking at is, how can we use this technology in the short term, how can we print solar cells to enable advertising, can we put solar cells on to advertising material in shopping centres to drive an active display. So if somebody wants to advertise something with nice flashing lights then at the moment they drive that with batteries. In the longer term we see these materials being able to be coated on to buildings, into windows and on roofs to provide.
Power in a wide variety of locations and circumstances. As part of the consortium, graduate students working alongside scientists are involved in training and development programs to improve the technology in the long term. We're now right up there with the rest of the people in the world but we've also got a facility which is different. We now have a process through our collaboration where we take things from the very very beginning, from designing materials, from making devices in the lab scale right through the large scale printing, which is very very unusual in the world context.
Can Korea take lead in Solar Panel Industry ,
Solar power is the biggest and fastest growing sector in the renewable energy market as it's expected to become an affordable and feasible alternative to fossil fuels. Korea is making increasing use of this energy source. but it is going to be a global player For this week's Industry Insight, here's Song Jisun. This is the biggest solar power plant in the capital that started operating this summer. It's equivalent to 13 football fields with a capacity of 5point6 megawatts enough for 22hundred households a year. Solar energy is quickly rising as the next.
Generation of renewable energy here in Korea accounting for 98 percent of all renewable power plants built in the first half this year. This solar panel system has been set up on the roof of this waterfiltering plant and we have completed a couple of other solar power facilities like this for the Seoul Metropolitan Government. It's fully operational even on cloudy days and only takes three months to install and operate. The market for these solar facilities is booming in Korea. with most being bulit by government or public agencies. Over the past decade. solar energy has emerged.
As the world's biggest source of renewable energy, overtaking wind power. Last year alone it created half of total electricity generated from renewable energy sources. This prospective market is forecast to expand by 10percent each year by 2030. with China and India likely accounting for half of the global demand. By then, the cost of generating electricity from solar power is expected to reach similar levels to burning fossil fuel meaning it could become more widespread without the support of government subsidies. as it mostly depends on at the moment.
The biggest competition in the industry comes from China which produces 80percent of the global demand. at prices 20 to 30 percent cheaper than Korea. Backed by government support, Chinese companies have been producing well over the market demand. with half of the world's top 10 solar panel producers based in China. It's not easy to counter them in terms of price, so Korean firms must improve their costefficiency, at the same time revving up quality and technology. Around 40 players are in Korea's solar power generating market with small and midsized.
Companies focusing on solar cells or modules. while large conglomerates aim to tackle the global market by equipping a complete chain of production to service. We've established a value chain from solar component production to system maintenance. And we aim to expand the solar power generation infrastructure to even include households. Industry experts point out that it is also crucial the government take steps to speed up growth of the domestic solar power industry. To expand its economy of scale and improve its profitability, they add. Korea needs to ease regulations concerning installation.
Solar powered air conditioning
Music playing Narrator Over 50 percent of the greenhouse gas emissions you produce in your home are generated by heating, air conditioning and hot water. In other words keeping your home warm in winter, cool in summer with nice hot water on tap is emitting 2.5 to 5 tonnes of greenhouse gas emissions each year. It also contributes a hefty amount to your electricity bill, between 50 to 60 percent. CSIRO has invented a new solar air conditioning system for Australian homes. This technology solution will reduce Australia's emissions, reduce your energy.
Bills and reduce our demand for electricity and gas. If every home in Australia installed our solar cooling technology it would be the equivalent of saving 15 mega tonnes of CO2 or taking 3.5 million cars off the road. CSIRO's solar air conditioning is an innovative three in one technology that provides hot water, cooling and heating. It uses only a fraction of the electricity of current systems and halves greenhouse gas emissions. The process begins with a typical solar hot water system. Water is heated by solar panels and stored in the hot water tank.
This solar hot water can then be used throughout the home, reducing the need for gas or electricity. A portion of the hot water is diverted into CSIRO's new solar air conditioning unit, which is divided into two compartments. The hot water enters a heat exchanger in the first compartment of the unit. Similar to a car radiator the heat exchanger uses the hot water to heat outside air that has been drawn into the first compartment through the vent. At the same time outside air is also being drawn into the second compartment into a desiccant wheel.
The desiccant wheel is the most critical part of the system. It is used to dry out the air before it goes into the house. Slowly turning the desiccant material in the wheel continuously absorbs moisture in the second compartment and then the absorbent material dries out in the first compartment. The desiccant material is dried out using the hot dry air generated by the heat exchanger. This air is then exhausted outside the home. The dry air from the desiccant wheel flows through an indirect evaporative cooler which creates a stream of cool dry air.
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