Development process of solar photovoltaic system cooling technology

During the operation of the photovoltaic system, how to cool the solar photovoltaic panel to achieve higher efficiency is a key factor to be considered. Proper cooling can increase power efficiency and reduce the rate of battery degradation over time, thus maximizing the lifetime of photovoltaic modules. The natural circulation convection cooling, forced convection circulating cooling, and liquid cooling technology in the traditional cooling technology are reviewed. The new cooling technologies include floating tracking centralized cooling system (FTCC), hybrid PV/T system, hybrid PV/TE system using radiator cooling and through use Phase change materials improve solar panel performance. According to the research focus, contribution and practical application, the advantages and disadvantages of each technology, the fields suitable for the application and the economic characteristics of each technology are analyzed. It is concluded that the future direction of technology development should ensure low, stable and reliable working surface temperature of the photovoltaic panels, no matter which technology is chosen. Meanwhile, the extracted thermal energy can be utilized to improve the overall conversion efficiency. To provide some reference value for the design and application of photovoltaic systems.