Solar photovoltaic and photo-thermal integrated system for recycling waste heat by utilizing capillary tube

A solar photovoltaic and solar photovoltaic panel technology, applied in solar thermal energy, heating system, photovoltaic thermoelectric hybrid power generation, etc., can solve the problems of solar photovoltaic panel heat waste, restricting photoelectric conversion efficiency, etc., to improve power generation efficiency and ensure photoelectric conversion. Efficient, lightweight effect

Pending Publication Date: 2019-08-20
NORTHEAST FORESTRY UNIVERSITY
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  • Abstract
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Problems solved by technology

[0005] The present invention is to solve the technical problem that the temperature of the existing solar photovoltaic panels seriously restricts its own photoelectric conversion efficiency, and the heat generated by the solar photovoltaic panels is wasted, and provides a solar photovoltaic photothermal integrated system that uses capillary tubes to recover waste heat

Method used

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  • Solar photovoltaic and photo-thermal integrated system for recycling waste heat by utilizing capillary tube

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specific Embodiment approach 1

[0024] Specific implementation mode 1: This implementation mode is a solar photovoltaic photothermal integrated system that uses capillary tubes to recover waste heat, such as figure 1 As shown, it is specifically composed of a solar photovoltaic panel 1, a first capillary network 2, a second capillary network 3, a water exchange tank 4, a first water level sensor 5, a controller 6, a first water pump 8, an electric heater 9, and a heating water tank 11. A temperature and pressure safety valve 12, a third capillary network 14, a second water pump 15, a second water level sensor 16 and a temperature sensor 17;

[0025] The first capillary network 2 is fixed on the outer wall of the solar photovoltaic panel 1, the water outlet of the first capillary network 2 is connected with the water inlet of the second capillary network 3, and the water outlet of the second capillary network 3 is connected with the third capillary network 14 The water inlet of the third capillary network 14 ...

specific Embodiment approach 2

[0037] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the outer diameter of the main pipe of the first capillary network 2 is 20 mm, and the wall thickness is 2 mm; the outer diameter of the capillary of the first capillary network 2 The diameter is 4.3mm and the wall thickness is 0.8mm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0038] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the outer diameter of the main pipe of the second capillary network 3 is 20 mm, and the wall thickness is 2 mm; the capillary of the first capillary network 2 The outer diameter is 4.3mm and the wall thickness is 0.8mm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a solar photovoltaic and photo-thermal integrated system for recycling waste heat by utilizing a capillary tube, and relates to a solar photovoltaic and photo-thermal integrated system. The aims of the invention is to solve the technical problems that the temperature of an existing solar photovoltaic panel seriously restricts the photoelectric conversion efficiency of the solar photovoltaic panel and the heat generated by the solar photovoltaic panel is wasted. The solar photovoltaic panel cooling system utilizes a capillary network as a heat exchanger to cool the solarphotovoltaic panel, in addition, the specific heat of water is large, so that compared with air, the water is used as a cooling medium, and the heat transfer efficiency is greatly improved. In the process of utilizing heat, the solar photovoltaic and photo-thermal integrated system exchanges heat with the urban water supply system to prepare domestic hot water, thereby reducing the energy consumption of buildings; and moreover, the roots of the plants are heated to promote the growth and development of the plants, and the method is applied to city beautification. The system has excellent performance, and after the photovoltaic panel in unit area is cooled, the power generation efficiency of the photovoltaic panel is improved by more than 10%.

Description

technical field [0001] The invention relates to a solar photovoltaic photothermal integrated system. Background technique [0002] Due to the increasingly serious problem of fossil energy crisis and environmental pollution, the development and utilization of renewable energy has gradually become a research hotspot. 99.98% of the available energy on the earth comes from solar energy. Solar photovoltaic cells are increasingly favored by people at home and abroad due to their unlimited storage of input light energy. However, during its application, the power generation efficiency of solar cells will decrease as the surface temperature of the cells increases, so some experts propose to recover this part of the heat that raises the temperature of the photovoltaic panels. Theoretical studies have shown that the maximum theoretical conversion efficiency of monocrystalline silicon solar cells is only about 30% at 0°C, and the temperature of photovoltaic cells seriously restricts th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/42H02S40/44F24D17/00F24D19/10
CPCF24D17/0068F24D19/1057F24D2200/02F24D2200/08F24D2200/14H02S40/425H02S40/44Y02B10/10Y02B10/20Y02B10/70Y02B30/18Y02E10/50Y02E10/60
Inventor 王松庆宓雪刘丽芳贺士晶
Owner NORTHEAST FORESTRY UNIVERSITY
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