Archive for January, 2010
I was trying to figure out how solar panels work today and I found that electrons get displaced in 2 layers of a solar panel by photons coming from the sun to create power. If the electrons come from the solar panel and go into the electrical grid, how are they replaced in the solar panel? Wouldn’t the solar panel eventually lose all of its electrons and stop working? Electrons have mass, so wouldn’t the solar panel slowly deteriorate?
I think solar energy is awesome and I really want to know how it works. Any help in enlightening me on this subject would great, thanks!
It’s because the photovolcaics are closed-loop systems. A photon will come in and basically knock an electron across what is called a "junction" and create current, but it is "caught" (really simplified version) on the other side of the junction and kind of "bounced back" into place.
It’s like Formula 1 racing or NASCAR. The car will be sitting in the Pit, just waiting to go, then will tear out, run a few laps until it requires more fuel, then stops in the Pit again, gets refueled, and just waits for the signal from the Pit Boss to get going again.
The limiting factor on solar cells isn’t the cell itself, as in the electrical circuits and semiconductors, but rather the very slow degradation of the (usually plastic) that holds each small cell in place, so that it can create a useful photovoltaic cell. Since modern plastics can be treated with UV coatings to prevent degradation, and are practically immune to water, the only thing that can really hurt them is somebody whacks it with a hammer or drops it while installing it on the roof.
They’re excellent. The south face of my roof is sufficient, along with a small vertical-axis wind turbine, to generate more power than I need, and it actually gets sold back to Sempra Energy/SDG&E.
How expensive is solar energy to produce?
What does a solar energy power plant look like and how do they work?
What are the hidden costs to society and the world? ( pollution, etc)
solar energy is just taking the sun’s energy and converting it into usable sources for our needs
they are really expensive, usually you need open space for the panels to collect
i don’t know about the hidden costs
i live around there, no tall buildings around or anything. i was wondering if anybody has a house that has solar panels and if it works well and how much power it gives off. specs like that.
The amount of electricity your house could produce depends on the roof square footage thats facing the sun or that can have stands to angle the panels. Many people go for a system that gives them about half of their total usage. The actual amount per square foot can vary slightly depending on the pannels you get there are amorphous and crystaline as well as different formulations of the solar material. The best bet would be to contact a solar installer in your area for a free evaluation or for a quick look you can check out manufacturers websites like sharpsolar, bpsolar and I believe home depot also installs solar now.
How does the amount of chemical energy stored in plants compare to the electrical energy stored by solar panel/batteries?
Most plants are around 1% efficient at turning sunlight into a useful form of energy it can use. Bamboo is probably somewhat higher. Solar panels are somewhere around 20% efficient now I think. Trees are much cheaper to use for collecting solar energy if you have the land area though.
I want to install solar panels in my roof and most installers don’t recommend any particular brand. Do you have experience with any particular brand that has worked for you or anybody you know? Does the brand of the panel make a difference?
I’ talking about photovoltaic panels. I’m interested in connecting to the grid and getting the benefits that my state (Arizona) is giving to individual homes. Thanks for asking.
Bp380j Bp 80w Solar Panel (brand 80w 12v Module)
Bp380j Bp 80w Solar Panel (brand 80w 12v Module)
Ventamatic Solar Panel 10 Watt, Model# VX SOLAR PANEL
Ventamatic Solar Panel 10 Watt, Model# VX SOLAR PANEL
Additional 10 Watt multi-crystal solar panel for use with Item#s 336620, 336622. … 18 x 13, Works With: Solar Fans, Solar Panel
Bushnell Trail Scout Pro Solar Panel Accessory 119750C
Bushnell Trail Scout Pro Solar Panel Accessory 119750C
PANEL (CLAM) $59.95
B&H Photo-Video-Audio
Note: This is just a partial list. However, a brand does not really matter for solar or wind power. Most of them comes after the testing done by the government. Also if you can find local electrician to suggest how to get second hand panels for your house would be even better…
http://www.EnergyBrainiac.com – Earth For Energy Exposed
Don’t Dare Buy Earth For Energy
Until You See This Shocking Review!
Is Earth 4 Energy Real?
20 DIY Energy Guides Compared.
We Inform, You Decide Who’s Best.
Earth For Energy Exposed
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advantages alternative benefits bill build cell cells cheap conservation cost costs diy earth earth4energy earthenergy efficiency efficient electric electricity eliminate energy environment free fuel generate generator global green grid heat heater help home homemade house how instructions kits live make manufacturer market money natural panel panels plant power renewable residential resources review save scam sell solar sun system technology transformers turbine turbines wind windmills work
Duration : 0:1:37
Raising the share of renewable energy from 8.5% to 20% in the overall energy consumption is a necessary contribution to the global fight against climate change and towards better control over our energy dependence. The various uses of renewable energy are examined: electricity through wind and hydraulic energies; electricity or heat through geothermal and solar energies; electricity, heat, and biofuel coming from biomass. The EU is a world leader in the use and deployment of technologies that exploit renewable energy sources, providing over 350.000 jobs and an annual turn-over of € 30 billion.
Download: http://ec.europa.eu./avservices/video/video_prod_en.cfm?type=detail&prodid=4783&src=1
http://ec.europa.eu/avservices/greencatalogue/swf/
Duration : 0:3:54
http://www.RethinkSolarPower.info A basic explanation of how your solar panels for your home will work… This video answers the question, “How is solar energy used?”
Copyright © 2007 BSW
Duration : 0:1:4
Solar Energy Systems, LLC
Kips Bay Tower Condominiums
New York, NY
54.28 kW
Solar Energy Systems: http://www.solaresystems.com
Network for New Energy Choices: http://www.newenergychoices.org
Duration : 0:5:50
Clean solar energy – 350MW in California desert. For more info see http://www.solarpaces.org/
Duration : 0:0:37