Active vs. Passive

CLAYTON11

The solar energy is one of the ideal sources of renewable energy. This energy can be used incessantly as long as there is sun. It is believed that the earth absorbs nearly 3,850,000 exajoules (EJ) of solar energy. In one hour, the energy absorbed by the planet's oceans and landmasses is more energy than the world consumes in an entire year. With lower costs and increased efficiency of solar technologies, solar energy is becoming a rage in renewable energy market.

Solar energy can be tapped in two ways: Passive and Active. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and positioning buildings to maximize sun exposure. Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into electricity.

Chenoachem

I went to a talk the other day about analysis of polymer solar cells. I find it intriguing that they are at a max of an 8% efficiency rate and they don't last long because they are not thermally stable. So the person was saying they are so cheap to manufacture, it might be like plastic wrap in your house. Each day you have to go out and make a put a new sheet on your panel.

That is all well and good, but I was concerned with the amount of waste that would generate. You can't re-dilute these into a solution and re-generate them.

I also liked the idea of the micro solar cells you can put into window glass. That way you don't have to add a new dimension to your home.

I find the topic interesting.