1. The energy of solar energy is the energy from celestial bodies outside the earth (mainly solar energy), which is the huge energy released by the fusion of hydrogen nuclei in the sun at ultra-high temperature. Most of the energy needed by human beings comes directly or indirectly from the sun.
2. Fossil fuels such as coal, oil, and natural gas that we need for our lives are all because various plants convert solar energy into chemical energy through photosynthesis and store it in the plant, and then the animals and plants buried in the ground go through a long geological age. form. Water energy, wind energy, wave energy, ocean current energy, etc. are also converted from solar energy.
3. Solar photovoltaic power generation refers to a power generation method that directly converts light energy into electrical energy without thermal processes. It includes photovoltaic power generation, photochemical power generation, light induction power generation and photobiopower generation.
4. Photovoltaic power generation is a direct power generation method that uses solar-grade semiconductor electronic devices to effectively absorb solar radiation energy and convert it into electrical energy. There are electrochemical photovoltaic cells, photoelectrolytic cells and photocatalytic cells in photochemical power generation. The application is photovoltaic cells.
5. Solar thermal power generation is a power generation method that converts solar radiation energy into electrical energy through water or other working fluids and devices, which is called solar thermal power generation.
6. First convert solar energy into thermal energy, and then convert thermal energy into electrical energy. There are two conversion methods: one is to directly convert solar thermal energy into electrical energy, such as thermoelectric power generation of semiconductor or metal materials, thermionic electrons and thermionic ions in vacuum devices Power generation, alkali metal thermoelectric conversion, and magnetic fluid power generation, etc.; another way is to use solar thermal energy through a heat engine (such as a steam turbine) to drive a generator to generate electricity, which is similar to conventional thermal power generation, except that its thermal energy does not come from fuel, but from solar.
7. There are many types of solar thermal power generation, mainly including the following five: tower system, trough system, disc system, solar pool and solar tower thermal airflow power generation. The first three are concentrating solar thermal power generation systems, and the latter two are non-concentrating.
8. The most promising solar thermal power generation systems currently in existence in the world can be roughly divided into: trough parabolic focusing systems, central receiver or solar tower focusing systems and disk parabolic focusing systems.
9. The three forms that are technically and economically feasible are: focusing parabolic trough solar thermal power generation technology (referred to as parabolic trough type); focusing central receiving solar thermal power generation technology (referred to as central receiving type); point focusing parabolic disc type Solar thermal power generation technology.
10. In addition to the above-mentioned traditional solar thermal power generation methods, research in new fields such as solar chimney power generation and solar cell power generation has also progressed.
11. Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect of the semiconductor interface. It is mainly composed of solar panels (components), controllers and inverters, and the main components are composed of electronic components.
12. After the solar cells are connected in series, they can be packaged and protected to form a large-area solar cell module, and then combined with power controllers and other components to form a photovoltaic power generation device.
13. Photovoltaic power generation is a small category of solar power generation. Solar power generation includes photovoltaic power generation, photochemical power generation, light induction power generation and photobiological power generation, and photovoltaic power generation is only one of solar power generation.
Post time: Dec-30-2022