This video lecture covers the history or solar energy technology. It focuses on both Solar Thermal Technology and Solar Photo-voltaic Technology. This lecture is part of the Solar Energy for Business (online) Course.
MIT 2.627 Fundamentals of Photovoltaics, Fall 2011
View the complete course: http://ocw.mit.edu/2-627F11
Instructor: Tonio Buonassisi
After a brief overview of course structure and objectives, this lecture introduces solar energy as a good match for world energy demand. A history of photovoltaics, survey of key technologies, and photovoltaic device fundamentals complete the session.
License: Creative Commons BY-NC-SA
More information at http://ocw.mit.edu/terms
More courses at http://ocw.mit.edu Video Rating: / 5
Seventeen years ago, Spain’s socialist government decided to inject subsidies into renewable energy. As a result, thousands of Spanish families massively invested in photovoltaic energy. But, as you’ll see in our report, the dream rapidly turned into a nightmare.
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The solar photovoltaic (PV) industry continues to grow, despite intense international competition and recent margin compression.
Can innovation in technology and manufacturing allow American companies to compete and ultimately thrive in this huge but challenging market?
Professor Buonassisi will address these questions as he explores the outlook for American PV cell and module suppliers. He will begin by using an industry-validated bottoms-up cost model to compare the cost-reduction potentials of various innovative PV technologies, and how their successful development could influence manufacturing location decisions. He will also describe recent progress toward these innovative technologies, highlighting the new computational and experimental tools that have accelerated the cycle of discovery and product development — providing “sneak peeks” at the technologies that may grace rooftops in years to come. He will conclude by showcasing recent success stories of U.S. innovation.
Join us as Professor Buonassisi explains how technology innovation will open up pathways for success in the U.S. solar PV industry.
Tonio Buonassisi, MIT Associate Professor of Mechanical Engineering, heads an interdisciplinary research laboratory focused on photovoltaics (PV). He completed his Ph.D. in Applied Science & Technology at UC Berkeley, with additional research at the Fraunhofer Institute for Solar Energy Systems and the Max-Planck-Institute for Microstructure Physics. He is author of over a hundred journal papers, and co-developer of a dedicated course on photovoltaics.
Prof. Buonassisi invents, develops, and applies defect-engineering techniques over the entire solar cell process, from crystal growth to modules, improving the cost effectiveness of commercial and next-generation solar cells. Several of his PV innovations have been implemented in industry, including key contributions leading to the founding of solar start-ups and a research institute. Video Rating: / 5
In this video, we are going to look at Solar Photovoltaic Thermal Hybrid collector or in short PVT. Its a combination of solar thermal collectors and PV cell.
The removal of heat from PV cells is also improved and the overall output increases to 85%. The added output is in the form of heat.
Given that over 50% of the energy we consume is in the form of heat, this is a valuable device.
This hydroelectric power was built in 2020 and has a full 10 part series if you are interested in learning more. I have wanted to install micro hydro power for many years. I am happy to say that I now have a unit up and running. This is making anywhere from 100w to 450w depending on the rain level and season. The components of my install include
1. Elgin coanda intake screen
2. 55 gallon tank as silt catchment
3. 1100 feet of penstock providing 150 feet of head pressure
4. Pelton wheel and permanent magnet alternator from Langston’s alternative power
5. 250 feet of 10/3 wire
6. AC to DC rectifier
7. Midnite classic 250v charge controller
8. Grid tie limiter inverter
9. AGM batteries
10. Off Grid 6000w inverter
If you would like to watch the entire playlist on this hydro electric install please check here:
Langston’s Alternative Power:
https://www.langstonsalternativepower.com
Ram Pumps available on AMAZON
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#microhydro #waterpower #offgrid #hydroelectric Video Rating: / 5
Keep going! Check out the next lesson and practice what you’re learning:
https://www.khanacademy.org/science/ap-college-environmental-science/x0b0e430a38ebd23f:energy-resources-and-consumption/x0b0e430a38ebd23f:fuel-types-and-uses-ii/e/fuel-types-and-uses-ii
Passive solar energy systems absorb heat directly from the sun without the use of mechanical and electric equipment, and energy cannot be collected or stored. Active solar energy systems use solar energy to heat a liquid through mechanical and electric equipment to collect and store the energy captured from the sun. Photovoltaic solar cells capture light energy from the sun and transform it directly into electrical energy. Their use is limited by the availability of sunlight.
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“Greenroof” by pnwra [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Green_Roof_(460698511).jpg
“Santa Fe adobe” by Carol m [Public domain], via Wikimedia Commons:
https://en.wikipedia.org/wiki/Adobe#/media/File:Santa_Fe_adobe.jpg
“Home awnings” by Conarty [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Home_Awnings.jpg
“Thermal solar collector” by Norbert Nagel [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Solar_heating_system_-_Thermosolaranlage_-_M%C3%B6rfelden-Walldorf_-_Germany.jpg
“Ivanpah” by Craig Butz [Public domain], via Wikimedia Commons:
https://en.wikipedia.org/wiki/Ivanpah_Solar_Power_Facility#/media/File:Ivanpah_Solar_Power_Facility_from_the_air_2014.jpg
“Heliostats” by Alexchris [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Type_of_Concentrated_solar_power.png
“Mersin CSP field” by Kohsman [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Mersin_CSP_field.jpg
“Solar calculator” by Rfassbind [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Solar_calculator_casio_fx115ES_crop.jpg
Have you ever seen a dam in real life? Those huge structures are not only vital for our water needs in dry seasons but are also quite helpful in providing extra energy.
By repurposing rivers and lakes, they reimagine vast ecosystems. They supply millions of homes around the globe with electricity, but how do these structures provide an alternative power source to humanity?
The short answer is by generating electricity from water. Acquiring dam power is simple in principle. Using the water’s kinetic energy and converting it into electricity is not something new and people have been benefiting from it since the first civilizations. They do this by using gravity to their advantage.
However, producing the amount of energy in today’s scale is not an easy task for sure. It is easier said than done. Therefore, it takes quite a number of professionals and engineers to build an electric generating dam. Thanks to the high efficiency of this conversion, hydroelectric dams are still one of the most convenient and preferred ways for alternative energy sources. Composing of four different parts, these magnificent engineering wonders have been providing us with energy while also helping the environment.
Dam energy has been used for quite a while, and the reason is clear.
If you also find these structures interesting and want to know more about how they function, we highly recommend you watch this video. You will be surprised how much you can learn about how dams are capable of converting the water-energy into electricity.
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#engineering
In this animated whiteboard animations tutorial, I will teach you about geothermal energy and how does geothermal power plant work.
Q: What is geothermal energy?
Ans: The heat energy extracted from inside the earth in the form of water and steam is known as geothermal energy or geothermal power.
The earth’s core contain hot magma in molten or semi molten form. When the underground water comes in contact with these hot rocks, they burst up into hot springs and steam. We can then convert this heat energy into other forms of energy like electrical energy, etc.
#GeothermalEnergy
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