Photoelectric and photo-thermal integrated system

Abstract

The invention relates to the field of comprehensive utilization of solar energy, in particular to a photoelectric and photo-thermal integrated system which comprises a photovoltaic power generation system and a photo-thermal energy recovery system. The photoelectric and photo-thermal integrated system is provided with a photoelectric and photo-thermal integrated assembly, wherein the assembly comprises tempered glass, transparent EVA, a photovoltaic power generation body, a heat absorption backboard and an outer frame; and a working medium flow channel is arranged in the heat absorption back plate and is used for absorbing heat and cooling the photovoltaic power generation main body through utilizing a working medium in the working medium flow channel and exchanging heat with the outside. The photo-thermal energy recovery system absorbs heat through the heat absorption back plate and cools the photovoltaic power generation main body. By integrating photovoltaic power generation and photo-thermal energy recovery in one assembly, and arranging the working medium flow channel in the heat absorption back plate, a photovoltaic power generation main body is cooled by using the working medium, so that the photovoltaic power generation efficiency is improved, and the photovoltaic power generation main body works under the working condition of lower temperature through cooling of the working medium in the heat absorption back plate, and therefore, the service life of the photovoltaic power generation main body is prolonged.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of solar energy, in particular to a photoelectric, photothermal integrated system. Background technique [0002] In the process of power generation of existing solar photovoltaic panels, the surface temperature of the panels changes synchronously with the sunlight. After noon, the sunlight is the strongest, and the temperature on the surface of the photovoltaic panel is also the highest. Therefore, it is necessary to cool down the photovoltaic panels so that they are within the optimum operating temperature range to improve power generation efficiency. [0003] For this reason, the Chinese patent No. 203026542 appeared, which discloses a cooling system for photovoltaic power generation components, including photovoltaic power generation components. A heat absorbing plate is arranged on one side of the photovoltaic power generating component. A working medium channel is arranged inside, a...

AI Technical Summary

Problems solved by technology

[0004] Existing photovoltaic power generation modules use single-glass modules or double-glass modules. The backplane layer of single-glass modules uses plastic, and the backplane layer of double-glass modules uses glass, which only plays a supporting role, and the heat dissipation of the material itself is poor.

When the temperature is high, it has a hindering effect on the heat conduction between the photovoltaic panel and the heat absorption plate, because in the existing scheme, there is a coupling relationship between the photovoltaic panel and the heat absorption plate. During the heat absorption process of the heat absorption plate, There is a space (or material) in the middle so that the cooling effect cannot exert the optimal effect; when the heat-absorbing plate is not absorbing heat, the heat dissipation space is reduced compared with that without the heat-absorbing plate, and the heat dissipation rate is not enough, so the heat-absorbing plate The cooling effect of the panels on the photovoltaic panels is limited, which in turn affects the power generation of the photovoltaic panel components under good working conditions. At the same time, the service life of the photovoltaic panel components will be shortened due to long-term high temperature conditions

Images