폴리머 회전식 열교환기의 열전달 성능 분석

Abstract

Heat exchanger are necessary for efficient energy use. Polymer have low thermal conductivity, which limits their use in recuperator heat exchangers. In a rotary regenerator, heat capacity is the main performance factor rather than the thermal conductivity of the matrix material, so polymer can be used to replace metal. In this study, the regenerator heat exchanger was analyzed by numerical analysis. In the air preheater condition, calculation of the effectiveness between the metal and polymer was compared. In the HRV condition, the change in effectiveness was investigated by setting flow and HEP thickness and the RPM as variables. In addition, it was confirmed that the effectiveness can be increased in the same volume by changing the shape of the HEP. Through the experiment, the heat transfer rate and effectiveness of each material were compared. The results show that the effectiveness between metal and polymer is similar within 90%. As the thickness of flow and HEP, and the RPM increase, the effectiveness increases.