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Contents contributed and discussions participated by Ian Doin

Ian Doin

Conversion Efficiency of a PV Cell - 2 views

  • Today's PV devices convert 7%-17% of light energy into electric energy. Of course, the other side of the equation is the money it costs to manufacture the PV devices. This has been improved over the years as well. In fact, today's PV systems produce electricity at a fraction of the cost of early PV systems.
Ian Doin

what is a solar furnace - Google Search - 0 views

shared by Ian Doin on 12 Mar 14 - No Cached
  • solar furnaceA solar furnace is a structure that uses concentrated solar power to produce high temperatures, usually for industry. Parabolic mirrors or heliostats concentrate light (Insolation) onto a focal point.
Ian Doin

How does solar power work? - Scientific American - 1 views

  • How does a solar cell turn sunlight into electricity? In a crystal, the bonds [between silicon atoms] are made of electrons that are shared between all of the atoms of the crystal. The light gets absorbed, and one of the electrons that's in one of the bonds gets excited up to a higher energy level and can move around more freely than when it was bound. That electron can then move around the crystal freely, and we can get a current.
Ian Doin

Pros of solar energy - 1 views

  • Good for the Environment One of the main draws to solar energy is how fits in with a growing trend to act more environmentally conscious. It accomplishes this by three ways. For one it’s renewable, unlike other popular forms of energy such as fossil fuel, solar energy won’t run out. Second, due to being renewable it’s also sustainable. As other forms of energy cease to exist, they can pose a risk for future generations that might rely on those types of power. Finally, solar energy doesn’t create the problems of pollution that coal and fossil fuel energy do.   Savings on Monthly Power Bills With financing helping to offset the initial cost, the monthly savings from having solar power can really add up over time. This is party made possible because you can ‘sell back’ excess solar energy that reduces your total power bill, in some cases down to $0.   Availability Many areas around the world are prime locations for harnessing the sun’s energy. This becomes more apparent as new technologies improve the efficiency of collecting solar power.   Maintenance Because solar panels don’t involve any moving parts, they are relatively maintenance-free. All that’s normally needed is a simple cleaning a few times a year.
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