Solar power generation
1. Light-heat-electricity-electricity conversion mode generates electricity by using the thermal energy generated by solar radiation. Generally, the solar collector converts the absorbed thermal energy into steam of working medium, and then drives the steam turbine to generate electricity. The former process is the light-heat conversion process; The latter process is the final conversion process of heat-power conversion to electricity, which is the same as that of ordinary thermal power generation. The disadvantage of solar thermal power generation is its low efficiency and high cost. It is estimated that its investment is at least 5 ~ 10 times more expensive than that of ordinary thermal power plants.
2. Light-electricity direct conversion mode This mode uses photoelectric effect to directly convert solar radiation energy into electric energy. The basic device of light-electricity conversion is solar cell. Solar cell is a device that directly converts solar energy into electric energy due to photovoltaic effect. It is a semiconductor photodiode. When the sun shines on the photodiode, the photodiode will convert the solar energy into electric energy and generate current.
Solar power generation
Solar power generation is called the most ideal new energy. Solar power generation has no danger of exhaustion; Safe, reliable, noiseless, pollution-free and absolutely clean (pollution-free); It is not limited by the geographical distribution of resources, and can make use of the advantages of building roofs; It can generate electricity and supply electricity locally without consuming fuel and erecting transmission lines; High energy quality; Emotionally acceptable to users; The construction period is short, and it takes a short time to obtain energy.
When many batteries are connected in series or in parallel, they can become a solar array with relatively large output power. Solar cell is a promising new power source, which has three advantages: permanence, cleanness and flexibility. Solar cell has a long life, so long as the sun exists, it can be used for a long time with one investment. Compared with thermal power generation, solar cells will not cause environmental pollution.
The above is the principle and advantages of solar power generation introduced to you by IT Encyclopedia Xiaobian. After reading the above introduction, how much do you know about solar power generation? At present, solar power generation is still in the research and development stage. Although it has outstanding advantages, there are also many unstable factors, and the cost of solar power generation is high, so it is not widely popularized at present. But with the progress of technology, I believe that in the near future, solar power will overcome its own defects and make our life more comfortable and beautiful.