1、Solar energy1Solar energy1.how does solar energy generate？2.whataretheadvantagesofsolar energy？3.how can we make full use ofsolar energy？4.The future solar energy2?Inside the sun by hydrogen fusing into helium nuclear reactions,kept releases enormous amounts of energy内部氢原子发生聚变释放出巨大核能3As a new energy
2、,solar energy has three characteristics compared to conventional energy sources:1)the enormous amountSolar oven4太阳能2)geographical universality5?there is no transport problems,particularly in rural,remote areas.6太阳能3)non-pollutingSolar energy is a clean source of energy,will not cause pollution.7But
3、there are many limitations of using solar energy?(1)dispersion(low energy density)?(2)Instability?(3)Low efficiency and high cost.8太阳能How can we make full use of solar energy？Wide range of applications of solarSolar car9太阳能Solar power station10For example,unmanned weather stations,communication stat
4、ions,television relay stations,sun clock,power rails,black light,beacon lights,railway signals11there 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.12Today,we have alread
5、y adopted a variety of different ways of developing 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.13California Thermal Power Plant14Space solar power station15Solar Lawn LightSolar lightSolar garden light16Sol
6、ar Car17Solar Aircraft18The 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%19?Organic so
7、lar 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 still has good sel
8、f-healing capability.In this way,the solar cells photoelectric conversion efficiency reached 40%20?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 along with the further perfecting experiment,conversion efficiency will keep growing.212223?Thank you!24
