High-efficient solar photovoltaic cell heat dissipating device and electricity and heat cogeneration system

Abstract

The invention discloses a high-efficient solar photovoltaic cell heat dissipating device and an electricity and heat cogeneration system, which relates to the solar utilization technology. The high-efficient solar photovoltaic cell heat dissipating device is used for the heat dissipation of a solar photovoltaic cell panel. The high-efficient solar photovoltaic cell heat dissipating device is characterized in that the device comprises a flat heat pipe and a tube-on-sheet heat exchanger; the flat heat pipe comprises a front panel and a rear panel; the front panel is directly or indirectly clung to the backboard of the cell panel and covers the whole backboard of the cell panel; the tube-on-sheet heat exchanger is attached to the rear panel of the flat heat pipe; in case of having no influence on the combination of the cell panel and the building surface and of being used as building member, the high-efficient solar photovoltaic cell heat dissipating device can rapidly transfer away the heat of the cell panel, which is rapidly absorbed by a heat absorption plane of the flat heat pipe, from a through pipe by a cooling medium, i.e. water or antifreeze solution and the like, through the tube-on-sheet heat exchanger so as to effectively prevent the temperature rise of the cell panel; and the high-efficient solar photovoltaic cell heat dissipating device can also form the electricity and heat cogeneration system to effectively utilize the transferred heat to output hot water so as to sufficiently improve the solar utilization efficiency and reduce the cost of the solar photovoltaic industry.

Description

technical field

[0001] The invention relates to solar energy utilization technology, in particular to a high-efficiency heat dissipation device for solar photovoltaic cells and a cogeneration system using the heat dissipation device. Background technique

[0002] The maximum photoelectric conversion efficiency of general commercial photovoltaic cells is only about 15%, and most of the unused solar radiation energy is absorbed by the cells and converted into heat energy. If the absorbed heat cannot be used in time (turned into waste heat) or exhausted, the temperature of the battery will gradually increase, and the efficiency of power generation will decrease. The service life of photovoltaic cells will be shortened due to rapid aging due to long-term work at high temperatures. Even for traditional non-focus solar power generation cells, the temperature of the cells usually reaches 70-80°C except in winter, and the actual photovoltaic efficiency is only about 7-10%. And beca...

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