A variable-diameter solar photovoltaic/photothermal collector/evaporator with high efficiency, current sharing and low resistance

Abstract

The invention discloses a variable-diameter solar photovoltaic / photothermal heat collector / evaporator with high efficiency, current equalization and low resistance, which relates to the field of photovoltaic / photothermal coupling technology, and is a multilayer structure that is pressed and bonded up and down, including: a photovoltaic surface glass cover Film, photovoltaic cell, first EVA film, electrical insulation layer, second EVA film, inflation heat collector / evaporator. The invention adopts hexagonal, checkerboard and linear coupling flow channel structure design and variable diameter flow channel arrangement, so that the flow distribution of the working medium in the plate is more uniform, and the inlet and outlet sections adopt wide flow channels to make the split flow even; the present invention The blown heat collector / evaporator with a special flow channel design reduces the flow resistance of the working medium in the plate, thereby reducing the compressor power in the direct expansion solar heat pump system, thereby improving the system performance coefficient; the invention makes the surface of the photovoltaic module The temperature distribution of the photovoltaic module is more uniform, which improves the power generation efficiency of the photovoltaic module, thereby prolonging the service life.

Description

technical field [0001] The invention relates to the technical field of photovoltaic / photothermal coupling, in particular to a variable-diameter solar photovoltaic / photothermal collector / evaporator with high efficiency, current sharing and low resistance. Background technique [0002] With the development of society and the advancement of technology, the urbanization rate of various countries is increasing year by year, and the consumption of primary energy is also increasing year by year, which leads to energy crisis and environmental crisis. As a large energy-consuming country, my country's energy structure transformation is imminent, and vigorously developing renewable energy is a basic national policy of our country. Building energy consumption accounts for more than 40% of the total energy consumption of the society, and domestic hot water energy consumption with fossil energy as the heat source accounts for 15%. As a widely distributed renewable energy source, solar en...

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Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to design a variable-diameter solar photovoltaic / photothermal collector / evaporator with high efficiency, current sharing and low resistance, so as to solve the low heat collection efficiency existing in the prior art. , poor flow uniformity, large flow resistance, and uneven surface temperature of photovoltaic modules

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