Plate heat tube type solar photovoltaic-photothermal composite heat collector and production process thereof

Abstract

The invention discloses a plate heat tube type solar photovoltaic-photothermal composite heat collector and a production process thereof. The plate heat tube type solar photovoltaic-photothermal composite heat collector comprises a glass top cover plate (1), an air interlayer (5), a photovoltaic-photothermal composite component (10), a heat insulating layer (6) and a protective back plate (4), which are sequentially arranged from top to bottom, wherein the heat insulating layer (6) is in adhesive connection with the photovoltaic-photothermal composite component (10). The photovoltaic-photothermal composite component (10) is formed by highly integrating a plate heat tube evaporation section 1061 and a photovoltaic cell 103 by means of lamination process, a condensation section (1062) is connected with a heat collection heat exchanger (3) through a sleeve (7), all parts are fixed into a frame (2), and a circulating water inlet pipe (8) and a circulating water outlet pipe (9) which are respectively connected to the heat collection heat exchanger (3) are arranged on the lateral sides of the frame (2). By means of the plate heat tube type solar photovoltaic-photothermal composite heat collector, the temperature of the photovoltaic cell can be decreased greatly, the photovoltaic cell can be cooled more quickly and evenly, hot water can be outputted while electric energy is outputted, and comprehensive solar utilization efficiency is greatly improved. Further, the plate heat tube type solar photovoltaic-photothermal composite heat collector is simple in manufacturing process, efficient and feasible.

Description

technical field [0001] The invention relates to a solar heat collector, in particular to a flat heat pipe solar photovoltaic photothermal composite heat collector, and also relates to a manufacturing process of the flat heat pipe solar photovoltaic photothermal composite heat collector. Background technique [0002] At present, the important factors restricting the development of solar energy industry are the low utilization efficiency and high cost of solar energy. Therefore, improving the power generation efficiency of photovoltaic cells and heat utilization conversion efficiency, and reducing the cost of solar thermal and photovoltaic power generation are the hotspots of solar energy research today. Due to the low photoelectric conversion efficiency of photovoltaic cells, about 80% of the incident solar energy is converted into thermal energy and lost. The comprehensive utilization technology of photovoltaic photothermal (PV / T) that effectively utilizes the thermal energy ...

AI Technical Summary

Problems solved by technology

[0003] In the research and development results of PV / T comprehensive utilization technology using liquid as cooling medium, related patents have been published, such as CN101106167B: Photovoltaic (PV / T) heat collector, directly using water as the cooling medium of photovoltaic cells, hot start The speed is slow, the thermal instantaneous efficiency is not high, and high-latitude cold regions are prone to icing, which affects normal use; in addition, because water directly enters the inside of the heat collector plate, it is easy to cause scaling and corrosion of the heat collector plate, thereby reducing heat transfer performance and reduce the service life; in addition, the patent uses a fastening plate to connect the heat-absorbing copper tube and the heat-absorbing plate core, which has a large contact thermal resistance and poor heat transfer capability

[0004] Published patent CN1944911A: Composite restoration of hot water building integrated components and its manufacturing process, directly uses water as the cooling medium to enter the inside of the heat collecting plate, which has the same disadvantages as the patent CN101106167B; in addition, the photovoltaic module and the heat absorbing plate use Silicone-coated connection is prone to air bubbles, which increases the contact thermal resistance and reduces the heat transfer performance between the photovoltaic module and the heat-absorbing plate, thereby greatly reducing the cooling effect of the photovoltaic module; in addition, the manufacturing process is not highly integrated. Modular production cannot be realized

[0005] Published patent CN102052782A: A heat pipe solar photoelectric photothermal comprehensive utilization system. The photovoltaic / hot water plate adopts a heat pipe with a tube-sheet structure. The heat transfer performance of the heat pipe is restricted by the rib efficiency of the heat-conducting metal plate connected to it; and the photovoltaic The cooling effect of the battery is uneven, which is likely to cause local hot spots; the arrangement spacing of photovoltaic cells is strictly limited, which reduces the area utilization of the collector; in addition, the tube-plate heat pipe structure, the connection between the heat-conducting metal plate and the photovoltaic cell is integrated The temperature is not high, and the contact thermal resistance is large

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