| Title |
Heat Transfer Characteristics on Design Conditions of Finned-Tube Evaporators |
| Authors |
강희정; 이윤수 ; 권영철 ; 장근선 ; 김영재 |
| Keywords |
Finned tube ; 핀 튜브 ; Heat exchanger ; 열교환기 ; Heat transfer coefficient ; 열전달계수 ; LMTD ; 대수평균온도차 ; Evaporator ; 증발기 |
| Abstract |
To investigate the design effects of a heat exchanger on a tube type, a tube circuit and a fin pitch, an experimental study on the heat transfer characteristics of finned- tube evaporators was performed. The refrigerant was R-22. A refrigerant loop was established to measure the heat transfer rate, the air heat transfer coefficient. The experimental results showed that the heat transfer characteristics of the evaporators were affected by the design parameters. And the heat transfer rate of the slit fin was better about 25%, compared to those of the louver fin. In the present experimental range, the heat transfer performance with the straight tube circuit was more remarkable than that of the zigzag tube circuit, as seen from temperature variations of the evaporator exit. -factor on the tube type, the tube circuit and the fin pitch decreased, as increasing Reynolds number. |