Self-radiation solar energy accumulation type photovoltaic generator

Abstract

The invention discloses a solar-energy focus photovoltaic generator with natural heat radiation, comprising a total reflection condenser, a secondary reflection beam-splitter, a photovoltaic cell, and a heat radiator or the like, or further comprising a thermal receiver. The total reflection condenser condenses sun radiation on the second reflection beam-splitter which reflects the light in the wavelength met with photovoltaic cell to the photovoltaic cell to generate electricity, while the waste heat uses a heat radiator composed of a thermal conductive plate, an additional heat radiation plate adhered at the back of the photovoltaic cell board, and the back coat of the total reflection condenser, to use radiation and convection to disperse heat. The beam of other wavelengths penetrates the second reflection beam-splitter can radiate a heat receiver to generate hundreds units of heat. The condense ratio of the invention can reach 20-30 of sun radiation, while the generating efficiency of unit photovoltaic cell can be improved 15 times to obtain high-temperature heat, therefore, the invention can reduce the invest and cost of solar-energy generation, with significant economic and social benefits.

Description

Technical field: [0001] The invention relates to the field of solar energy utilization and new energy development technology, in particular to a solar concentrator for power generation and heating. Background technique: [0002] Fossil fuels are decreasing day by day, and the human demand for energy is increasing. In order to achieve sustainable development and protect the environment, human beings need to find clean and abundant new energy sources. Among all kinds of energy, solar energy has the most abundant storage, the widest distribution and the cleanest. Solar energy is the most reliable energy source for the sustainable development of human beings; however, the solar energy density is low and unstable due to the influence of day and night, seasons, geography and climate , not as good as fossil fuel energy. Human beings have carried out research on solar energy utilization for a long time, and now people can not only simply use solar energy to make hot water, dry grai...

AI Technical Summary

Problems solved by technology

For example: the patent application number is CN200410025990.0 "solar electric heating cogeneration device". This method is to radiate solar energy on the photovoltaic cell panel, and collect the heat generated by the photovoltaic cell with cooling water on the back of the photovoltaic cell panel. This heat The temperature of the cooling water generally rises to 50-60°C, which can be used for heating and domestic hot water, but it cannot be used for power generation (because the efficiency of power generation is too low)

Therefore, this method is not suitable for large-scale solar power plants, because a large amount of cooling water with a temperature of only 50-60°C is generated at this time, which is useless heat, but water is precious, and needs to be recovered by radiators. If it is forced circulation , it will consume extra pump power

Moreover, since the full-spectrum radiant energy of solar energy is used together without distinction, the heat generated on the photovoltaic cell panel is relatively high, and the heat generated on the photovoltaic cell by cooling water alone is not enough to reduce the temperature of the cell panel. To make it have a high enough efficiency; at the same time, the inlet and outlet pipes of the cooling water system will bring some difficulties to the rotation of the whole device when tracking the direction of the sun

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