| Title |
Dehumidifying Performance of Material-Saving Fin in Fin-tube Heat Exchanger |
| Keywords |
Heat exchanger ; 열교환기 ; Heat transfer coefficient ; 열전달계수 ; Pressure drop ; 압력강하 ; Mass transfer coefficient ; 물질전달계수 ; Louver strip ; 루우버 스트립 |
| Abstract |
This work discusses the pressure drop, heat and mass transfer of the finned- tube heat exchangers having 7 mm tubes and offset strips in dehumidifying applications. It focuses on the fin material saving and the reduction of pressure drop. The experiment was conducted using three times scaled-up models to simulate the performance of the prototype. Eight kinds of fins having different strips and S shape edges were tested. The area density of the strip was a major factor and its shape and the location were secondary factors on the pressure drop, the heat and mass transfer. The reduced-area fin can almost equal the non- reduced fin in the aspect of heat and mass transfer. The strip fins proposed in the present work can considerably reduce both the pressure drop and the fin material for a similar thermal load. |