Photovoltaic and photothermal integrated unit

Abstract

The invention relates to a photovoltaic and photothermal integrated unit. The unit comprises a water tank, a glass panel, packaged solar cell blocks and a glass substrate. The unit is characterized in that a group of packaged solar cell blocks are laid between the glass panel and the glass substrate; gaps are reserved among the packaged solar cell blocks; a heat-absorbing material layer is laid below the glass substrate; a plurality of hot water pipes connected with the water tank are embedded in the heat-absorbing material layer; the hot water pipes are connected with each other by a cold water pipe; and the cold water pipe is connected with the water tank. The unit has the following beneficial effects: while the solar cell generates power normally, the direct solar radiation heat-absorbing materials and the heat-absorbing materials are used for absorbing heat generated when the solar cell generates power to heat the water in the hot water pipes to provide domestic hot water with higher temperature to people.

Description

technical field [0001] The invention relates to an integrated unit for generating electricity and supplying hot water by solar energy, in particular to an integrated unit capable of providing hot water with a temperature above 60°C while utilizing solar energy to generate high-grade electric energy. Background technique [0002] In many occasions, both electricity and hot water are needed, but neither the urban power grid nor the gas pipeline network has been laid. Solar photovoltaic photothermal technology can solve this problem. [0003] Currently, there are usually two solar photovoltaic thermal technologies. One is to paste metal water pipes on the glass substrate on the back of the solar cells to absorb the heat emitted by the solar cells when generating electricity, and heat the water in the water pipes; the other is to place heat-absorbing materials at a certain distance behind the solar panels to absorb solar power. Radiant heat transfer from the plates, thus he...

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Problems solved by technology

[0004] In the first method, the combination of the solar cell glass substrate and the metal water pipe has always been a problem, and there is no proper solution, and it only absorbs the heat emitted by the solar cell. water needs

The second method mainly relies on the radiation heat transfer between the solar panel and the heat-absorbing material board, and its radiation heat transfer is lower than that of the first method, so the water temperature of this method is not high, generally Below 45 degrees Celsius, the thermal efficiency is also low

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