Solar energy is the energy of external objects from earth, the human energy needed for the price of solar street light for the most part are directly or indirectly from the sun. Solar power is a new kind of renewable energy, can be applied to solar street lamps, etc. Existing power can
solar energy is the energy of external objects from earth, human energy needed for the price of solar street light for the most part are directly or indirectly from the sun. Solar power is a new kind of renewable energy, can be applied to solar street lamps, etc. There are mainly three kinds of existing electric energy source, namely, thermal power, hydropower and nuclear power.
thermal power needs to the burning of coal, petroleum and other fossil fuels. On the one hand, the less fossil fuel reserves is limited, the burning, are faced with the danger. It is estimated that the world oil resources in another 30 years will be dried up. On the other hand burn fuel will emit carbon dioxide and sulfur oxide, thus causes the greenhouse effect and acid rain, the earth's environment.
hydropower a large amount of land is submerged, could lead to ecological environmental damage, and once had large reservoir, consequence will be unimaginable. In addition, a country's water resources is limited, but also influenced by season.
nuclear power under normal circumstances it is clean, but one thousand radiation leaks, the same terrible consequences. The former Soviet union at the chernobyl nuclear power plant accident, has 9 million people by different degree of damage, and this effect has not terminated.
meet the conditions of the new energy and solar energy, the rich will not dried up; 2 it is safe, clean, not threat to humans and damage the environment. Because our country is a country with a lack of energy, solar energy is an effective inexhaustible clean energy, is an indispensable important means of developing low carbon economy.