3. 5 m solar street light1

It is well known that the energy of the sun is very big. The sun radiation energy of the earth's surface every second is about 17 trillion kw, equivalent to the world energy consumption of three a year. 50000 times, unlimited, unlimited. Solar energy are widely distributed on the earth, as long as there is light

it is well known that the sun is very energetic. Solar radiation energy on the surface of the earth is about 17 trillion kilowatts per second, equivalent to 35000 times the world's total energy consumption within a year. Solar energy on the earth are widely distributed, photovoltaic power generation system can be used in any place, is not restricted by factors such as geographical and altitude. Solar energy can nearby power supply, avoid long distance transmission of electric energy loss. Solar energy conversion process is simple, without intermediate process, mechanical and mechanical wear and tear, light energy directly to electrical energy conversion can be realized. According to the thermodynamics analysis, solar power has the very high power generation efficiency and huge development potential technology. Solar power does not use fuel, no harmful gas emissions, polluting the environment, does not produce noise, is the real green environmental protection and renewable energy. Solar power does not need cooling water in the process, can be installed on the gobi desert, and building a perfect combination, do not need to separate cover, saving precious land resources. The service life of the solar panels is very long, up to 20 - commonly 35 years. Solar energy has many advantages, so if the solar energy can be fully conversion and utilization, it will not only reduce the consumption of the earth's resources, and will not pollute the environment. The following is solar energy reduction data: 1. Per KWH of coal consumption: at present, China's power generation coal consumption to an average of 390 grams of standard coal/KWH. 2. Carbon dioxide emissions is about 1 per KWH. 4 kg. 3. Per watt pv module 2 KWH per year on average. 4. On average, per watt photovoltaic modules can be reduced by 2 each year. 8 kg of carbon dioxide. According to EPIA estimate, the co2 emission reduction effect of photovoltaic power generation to replace diesel generator for 1 kg/KWH. The average emission reduction effect for photovoltaic (pv) grid power generation 0. 6 kg/KWH. It can be seen that solar energy to produce environmental benefits are considerable. Once the solar energy is widely used all over the world, it will effectively control the greenhouse effect, prevent more tragedies. Can say, solar energy as a solution; Economic development has increased the demand for energy; There is. People's demand for high quality environment; The only way of contradictions. ； As is known to all, the sun is very energetic.