Solar power and solar cells are important components for most countries’ contemplating how to meet their future need for energy.

2010-09-08 – www.easy2bid.com

A solar cell is produced in many different sizes. It transforms the energy received from the sun into electricity. They are most often mounted on rooftops where, during the day, they produce electricity that is either stored in batteries or used to power household appliances.  High technical products become more and more popular. No like traditional industry such as T Shirt Suppliers, Sweater Suppliers or Sock Suppliers, high technical products need a lot of other thing.

 

Technical Stuff

The difference between solar heating and solar cells is that solar heating facilities use water to transform solar energy to heat, while solar cells transform solar radiation into electricity. Solar cells vary greatly in size, and so does the amount of energy that can be harvested from them. Small cells like the ones used in pocket calculators and mobile phones may produce only a few milliwatts, whereas large facilities may produce between 1 and 200 watts. Solar cells can be connected serially or parallel dependent on the desired effect.

 

Advantages/Disadvantages

The biggest advantage of solar energy is of course that it is clean and free. Also the cost of maintaining a solar energy facility is very and solar cells may last as long as 35-40 years. The price per watt is unfortunately still quite high, and furthermore solar energy only’works’ if the sun is shining and in the day time. This is a problem since storing the energy is still very complicated and expensive.

 

Recycling

Recycling of solar cells hasn’t been much of an issue so far, mostly because of the long life of the solar cells. About 78 percent of solar cells is made of glass that theoretically can be recycled if it can be separated from the binding material. Unfortunately this technology does not yet exist. The binding material, EVA, is about 10 percent of the total weight. Polyester is 7 percent, silica is 4 percent, silver is 0.4 percent, and cobber is 0.3 percent. Most of the materials aren’t terribly dangerous due to the small amount. There does however seem to be certain difficulties in regard to silver and cobber. There is as yet no solution to these problems. So, no doubt solar energy is not without problems, but the problems are by far overshadowed by the huge advantages that solar energy offers.