Solar electric heating coupled air-cooling system

Abstract

The invention discloses a solar electric heating coupled air-cooling system comprising a photoelectric unit, a heat collecting unit, a coupling component, a supporting component and a heat recovering system, wherein the photoelectric unit is used for absorbing solar radiation, converting the solar radiation into electric energy and generating heat at the same time; the heat collecting unit is used for absorbing the heat generated by the photoelectric unit; the coupling component is used for fixing the photoelectric unit on the heat collecting unit; the supporting component is used for fixing the heat collecting unit on a base body, thereby limiting a closed cavity between the heat collecting unit and the base body; and the heat recovering system is used for leading outside air to enter the cavity in order to absorb the heat collected by the heat collecting unit and transporting the air carrying the heat to the outside. According to the invention, the system can be modularized and can increase energy utilization efficiency.

Description

technical field [0001] The present invention relates to the comprehensive utilization of solar energy, and more specifically, the present invention relates to an air-cooling system with combined use of solar energy, electricity and heat. Background technique [0002] Currently, clean energy technologies are getting more and more attention. Solar energy has become an important clean energy due to its universal distribution and huge total amount. Currently, the focus of research has shifted from using solar energy to generate low-quality thermal energy (eg, hot water, etc.) to utilizing solar energy to generate high-quality electrical energy (eg, generating electricity through solar cells). [0003] However, under the current technical conditions of solar cells, less than 5-20% of the solar radiation incident on the solar cells is converted into electrical energy, and nearly 60-70% is converted into heat energy. This part of the heat energy will cause the temperature of the ...

AI Technical Summary

Problems solved by technology

[0003] However, under the current technical conditions of solar cells, less than 5-20% of the solar radiation incident on the solar cells is converted into electrical energy, and nearly 60-70% is converted into heat energy.

As the temperature increases, it will bring the following problems: the reverse saturation current of the solar cell increases, and the open circuit voltage decreases; the absorption energy band of the solar cell decreases, and the short-circuit current generated by the cell increases; Coefficient can reach -0.6~-0.2%℃ -1

[0007] According to this technology, it is necessary to provide a liquid container for holding heat-collecting liquid working medium, so it is difficult to modularize and realize building integration

Its structure is complex, the production cost is high, and it is not easy to produce on a large scale

In addition, due to the existence of liquid, problems such as freezing cracks and water leakage may occur, so the construction requirements are also high.

Moreover, in this technology, the solar radiation cannot be fully utilized, so the energy utilization rate is low

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