7㎜ 루버 핀-관 열교환기의 열전달 및 압력강하 특성에 관한 실험적 연구

The purpose of this study was to investigate the heat transfer and friction characteristics of 7㎜ louver finned-tube exchangers. Evaporators used to the present study were the finned-tube type. Tested finned-tube evaporators was changed configuration parameters such as fin type, row number, tube diameter. To control the temperature, velocity and humidity of inlet air flow, a heat wind tunnel was used. The experimental results show that the heat transfer and friction of 7㎜ evaporator(3 row) are more higher above 30% than those of 9.52㎜ evaporator. And it is observed that the heat transfer and friction performance of the evaporator with louver fin was higher above 5%, compared with those of slit fin.