Photovoltaic photo-thermal integrated device with night radiation refrigeration function

Abstract

The invention discloses a photovoltaic photo-thermal integrated device with a night radiation refrigeration function. The device comprises a body module and a transmission module; the body module is abox body with openings in the top surface and the bottom surface, a heat collecting plate and a radiation refrigerating plate are arranged in the box body, the heat collecting plate and the radiationrefrigerating plate form a closed cavity with four side walls of the box body, the closed cavity forms a fluid heat exchange cavity, and a water inlet and a water outlet are formed in the two side walls of the box body; photovoltaic cells are uniformly arranged on the outer surface of the heat collecting plate of the closed cavity, a glass cover plate covers the position, corresponding to the opening of the box body, of the heat collecting plate, and a full-wave-band high-transmittance material film covers the position, corresponding to the opening of the box body, of the radiation refrigerating plate; and the transmission module comprises a motor, two connecting rods, two cranks, two rotating shafts, two supporting shafts and a bracket, so that the top surface and the bottom surface of the box body can be freely switched by starting the motor. The device integrates photovoltaic power generation, solar heat collection and night radiation refrigeration functions, and has the advantagesof being high in heat collecting efficiency, adjustable in angle, good in practicability and the like.

Description

technical field [0001] The invention belongs to the technical field of renewable energy utilization, and in particular relates to a photovoltaic photothermal integrated device with nighttime radiation cooling function. Background technique [0002] The use of renewable energy is an important way to save energy and reduce emissions. As a clean, common and long-lasting green energy, solar energy has advantages that conventional energy cannot match. At the same time, since the temperature in outer space is close to absolute zero, it is an ideal natural cooling source. [0003] The main methods of solar energy utilization include photovoltaic power generation and solar thermal utilization. At present, the photoelectric conversion efficiency of solar photovoltaic cells is low, generally 12%-17%, and research data show that: for every 1°C increase in battery temperature, the photoelectric conversion efficiency of crystalline silicon cells decreases by about 0.4%, and that of amo...

AI Technical Summary

Problems solved by technology

However, since there is no glass cover, the radiant heat loss at the top of the device in the daytime heat collection mode is large, and the heat collection efficiency is low; at the same time, because the photovoltaic cell is fragile, the material film has little protection for the battery, which limits the use of the device. Practicality

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