| Title |
Experimental Study on the Heat Transfer Capacity and Dehumidification Performance of a Parallel Flow Evaporator for a Heat Pump Dryer |
| Authors |
권영철(Young Chul Kwon) ; 김기영(Ki Young Kim) ; 이석현(Seok Hyun Lee) ; 권정태(Jeong Tae Kwon) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2013.25.9.516 |
| Keywords |
건조기 ; 증발기 ; 평행류 ; 제습 ; 히트펌프 Dryer ; Evaporator ; Parallel flow ; Dehumidification ; Heat pump |
| Abstract |
In the present study, the performances of a fin-tube evaporator and three PF evaporators for a heat pump dryer were experimentally investigated. Among the tested evaporators, the PF3 type evaporator showed the highest values of heat transfer capacity and dehumidification performance, while the fin-tube evaporator had the lowest values. PF3 showed better performance compared to PF1 and PF2, due to the large pin pitch, which leads to more draining for dehumidified water. Also, the 45° inclined PF evaporator presented better performance than that of the 90° inclined PF evaporator, owing to its easier draining characteristics. The effect of air velocity was revealed to be quite large. When the air velocity increased by 20%, the heat transfer capacity and dehumidification performance increased 43%/11%, 48%/13% and 54%/23% for PF1, PF2 and PF3, respectively. |