Concept:Concentrated solar power (CSP) is a power generation system of a concentrated solar power plant. It uses mirrors or lenses to collect large areas of sunlight into a relatively small light collection area using optical principles to concentrate solar energy. The light collection area on the generator is irradiated by sunlight and the temperature rises. The solar energy is converted into heat energy, and the heat energy uses the heat engine to do work to drive the generator, thereby generating electricity.
Photovoltaic (PV) refers to the best way to use solar energy is photovoltaic conversion, which is to use the photovoltaic effect to make sunlight shine on silicon materials to generate electricity to directly generate electricity.
1.Different principle
Photovoltaic-High-purity silicon can use sunlight to generate direct current and photovoltaic power generation;
Light and heat-collect solar heat and process it into vapor state, promote steam turbine and generator to generate alternating current, and photothermal power generation; the principle is the same as traditional power generation;
2. Different energy storage methods:
Photovoltaic batteries have a service life of several years and need to be replaced. The replacement batteries will cause a lot of pollution;
Light-heat storage tank; use hot molten salt, no need to replace, just add;
3. Different directions of use:
Photovoltaic-suitable for decentralized, small-scale, high-end cities; small local power supply
Light and heat-suitable for centralized, large-scale, and general regions; the entire region, province, and even the nationwide large-scale power supply, using only 100 square kilometers of solar thermal energy in the Xinjiang desert, is enough for our entire China; Xinjiang desert is 42.48 Ten thousand square kilometers;
4. Different relevant industrial chains:
Photovoltaic industry chain: silicon mine production, purification, slicing, and products, the related industry chain has a single major;
Light and heat industrial chain: raw materials use steel, glass, cement, etc., involving multiple industries, similar to real estate, and the related industrial chain is long and very rich;
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