solar energy英語簡介PPT課件

1、Solar energy1. how does solar energy generate1. how does solar energy generate？2. what are the advantages of 2. what are the advantages of solar energysolar energy？3. how can we make full use of 3. how can we make full use of solar energysolar energy？4. The future solar energy4. The future solar ene

2、rgy第1頁/共24頁 Inside the sun by hydrogen fusing into helium nuclear reactions, kept releases enormous amounts of energy 內(nèi)部氫原子發(fā)生聚變釋放出巨大核能第2頁/共24頁Solar oven As a new energy, solar energy has three characteristics compared to conventional energy sources: 1)the enormous amount 第3頁/共24頁太陽能2) geographical u

3、niversality第4頁/共24頁 there is no transport problems, particularly in rural , remote areas.第5頁/共24頁太陽能3) non-polluting Solar energy is a clean source of energy,will not cause pollution.第6頁/共24頁But there are many limitations of using solar energy (1) dispersion (low energy density) (2) Instability (3)

4、Low efficiency and high cost.第7頁/共24頁太陽能Solar carHow can we make full use of solar energy？Wide range of applications of solar第8頁/共24頁太陽能Solar power station第9頁/共24頁For example, unmanned weather stations, communication stations, television relay stations, sun clock, power rails, black light, beacon li

5、ghts, railway signals第10頁/共24頁there are solar house, solar cookers, solar greenhouse, solar drying systems, solar technology, in particular, these technologies used widely in the north and west, with remarkable results. 第11頁/共24頁 Today, we have already adopted a variety of different ways of developi

6、ng its use, it has become necessary for our daily part of life and has greatly changed our lives. Here is our common examples of solar energy.第12頁/共24頁California Thermal Power Plant第13頁/共24頁Space solar power station第14頁/共24頁Solar light Solar garden light Solar Lawn Light第15頁/共24頁Solar Car 第16頁/共24頁

7、Solar Aircraft 第17頁/共24頁The future solar energy Solar electrical energy generation : Solar power conversion efficiency low (11%), cost is high. Solar thermal power generating cost is the 5 10 times higher than Coal-fired power At present main use of solar panels is purity silicon. To 99.9999%第18頁/共2

8、4頁 Organic solar cell theory conversion efficiency almost 100% Researchers in the United States use extracted from plants the proteins and phosphate chemical compounds such as carbon nanotubes ,Developed can simulate plant photosynthesis mechanism of self-assembling solar cells. New batteries are st

9、ill has good self-healing capability. In this way, the solar cells photoelectric conversion efficiency reached 40% 第19頁/共24頁 Theoretically speaking, the solar battery conversion efficiency can almost 100%. However, due to current this research is still in the cradle. Solution of solar cell formation in very low concentrations, its conversion efficiency is very low ,also al