다공형 유로를 적용한 전열교환기 소자의 성능향상에 관한 연구

The perforated type element for a heat recovery ventilation system has been studied to improve the performance. Four holes of diameter of 6㎜ are punched out for each flow channel to break the boundary layer development and increase the turbulence. KS cooling and heating conditions and test procedures are applied for study. The efficiencies are compared to those of the typical element with smooth surface. For cooling operations, the temperature, latent and enthalpy efficiencies increase 2.5%, 18% and 8%, respectively. For heating operations, the temperature, latent and enthalpy efficiencies increase 3%, 5% and 3.2%, respectively.