Publication Details
Abstract
Solar collectors are the core of solar heat utilization technologies, and the thermal performance and heat collecting efficiency determines the development and popularization of solar utilization technologies. In this paper, the typical methods and application areas of solar thermal utilization are summarized, the heat collecting principles and type structures of solar collectors are described and analyzed. results show that the outlet temperature and heat collection efficiency of the flat-plate solar air collector using penetrated microporous absorber plates are significantly higher than those of the solar air collector using non-porous corrugated absorber plates. The collector can increase the absorption of solar radiation heat energy and strengthen the convective heat exchange between the absorber and the air. Therefore, the former solar air heater was proved to be able to absorb more radiant heat energy from the sun to increase the heat convection between the absorber flat plate and the air to get the best heat observation.