英语太阳能.ppt

The development and utilization of solar energy
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Solar energy
1、what are the advantages of solar energy？
2、how can we make full use of solar energy？
3、what are the new ways of using solar energy?
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太阳灶
as a new energy, solar energy has three characteristics compared to conventional energy sources: first: it is human beings can use the most abundant source of energy, enough to supply the earth for future human use of billions of years.
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太阳能
Second: no matter where we can use solar energy in the earth, there is no transport problems, particularly in rural areas with poor communications, islands and remote areas, more use of value.
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太阳能
太阳能计算器
Third: Solar energy is a clean source of energy. In the development and utilization, it will not generate waste, wastewater, waste gas, no noise, but will not affect the ecological balance. Will not cause pollution.
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太阳能
太阳能汽车
Wide range of applications of solar
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太阳能
太阳能发电站
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For example, unmanned weather stations, communication stations, television relay stations, sun clock, power rails, black light, beacon lights, railway signals
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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.
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But There are many limitations of using solar energy
(1) dispersion: solar radiation reaching the Earth's total surface, despite great, but very low energy density
(2) Instability: weather play an important role in the utilization of solar energy.
(3) Low efficiency and high cost.
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