냉동유닛용 증발기의 공기측 열전달 및 압력강하에 대한 실험 연구
An Experimental Study of Air-side Heat Transfer and Pressure Drop of Evaporator for Refrigerator Unit
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In this study, the air-side cooling capacity and pressure drop of an evaporator for a refrigerator unit were experimentally investigated. Using the calorimeter, the performance of the evaporator was verified by changing the fin shape, fin pitch, tube row and air flow rate. The experimental apparatus consisted of the calorimeter which functioned as a constant temperature and humidity chamber and the refrigeration cycle. In order to select the heat exchanger suitable for the evaporator, both air-side cooling capacity and pressure drop should be considered at the same time. From the evaporator performance test by pin type, wavy pin was selected. The optimal performance of the evaporator was observed at the fin pitch of 5 mm, the tube row of 6 row, and the air flow rate of 40㎥/min.
Abstract
In this study, the air-side cooling capacity and pressure drop of an evaporator for a refrigerator unit were experimentally investigated. Using the calorimeter, the performance of the evaporator was verified by changing the fin shape, fin pitch, tube row and air flow rate. The experimental apparatus consisted of the calorimeter which functioned as a constant temperature and humidity chamber and the refrigeration cycle. In order to select the heat exchanger suitable for the evaporator, both air-side cooling capacity and pressure drop should be considered at the same time. From the evaporator performance test by pin type, wavy pin was selected. The optimal performance of the evaporator was observed at the fin pitch of 5 mm, the tube row of 6 row, and the air flow rate of 40㎥/min.
참고문헌 (7)
- 이상헌, "나선형 핀-튜브 증발기를 적용한 냉장고의 성능 특성에 관한 연구", 대한기계학회논문집 B, 37(3), pp.205~212 (2013), 대한기계학회
- Kim, J. K., "The comparison of Characteristics of a Fin pitch under a Frost condition", SAREK, pp.059~062 (2013)
- Jung, Y. K., "A numerical study of Plate fin heat exchanger with variation in fin configuration", KOSMEE, pp.2444~2447 (2014)
- Lee, W. J., "Deduction Method of The Optimum Number of circuits for Fin-tube Condenser", SAREK, pp.148~151 (2015)
- Yoo, J. H., "Numerical Analysis for Heat Transfer Characteristics of Elliptic Fin-Tube Heat Exchanger with Various Shapes", KSME, pp.367~375 (2013)
- Ha, H. H., "A Study on the Heat Transfer Performance of Evaporator Heat Transfer Tube for Simi-flood type", SAREK, pp.1053~1054 (2015)
- Korea Refrigeration & Air-conditioning Assessment Center, "Psychrometric calorimeter", ~