Ideal Solar Energy

Ideal Solar Energy
Solar radiation on Earth is very large, about 40 minutes of solar radiation on earth, would be sufficient for the year of global human energy consumption. It can be said that solar energy is truly inexhaustible source of forklift energy. And solar power is absolutely clean, does not produce gate opener pollution. Therefore, known as solar power is an ideal source of energy.
Access to electricity from solar energy, photoelectric conversion to be carried out through the solar cells to achieve. Other power wind turbine generator generation with the past, it is a completely different principle, has the following characteristics: ① no depletion of danger; ② absolutely clean (pollution); ③ not limited geographical distribution of resources; ④ nearest place in the electricity generation; ⑤ energy of high quality; ⑥ users emotionally receptive; ⑦ access to energy to spend a short time. The fastener downside is that: ① the energy density of radiation is small, that is, to occupy a huge area; ② energy obtained with the four seasons, day and night, and confront other weather conditions. Overall, however, have fundamental, as a new energy, solar water heater energy has great advantages, so by the b2b world's attention.
To make solar energy truly reached the practical level, it is necessary to improve the photovoltaic conversion efficiency and reduce its cost, and second, to achieve the solar water heater power generation with the current power grid interconnection.
Currently, there are single crystal silicon solar cells, polycrystalline silicon, amorphous silicon three. The highest conversion efficiency of monocrystalline silicon solar cells has reached more than 20%, but prices are also the most expensive. The lowest conversion efficiency of amorphous silicon solar cells, but the cheapest price, best hope for the future garden tool generation will be the general the battery. Once it's a large area components of optical conversion efficiency of 10%, the price per watt of power generation equipment down to 1-2 dollars, would be sufficient to compete with the current power generation. Estimated that this level could be achieved this century.
Of course, special use and laboratory using the solar cell efficiency is much higher, as developed by Boeing with the GaSb semiconductor gallium arsenide semiconductor solar electricity from overlapping, the photoelectric conversion efficiency up to 36% soon caught up with the coal-fired power forklift truck generation efficiency. But because it is too expensive, currently only limited use in the satellite.