| Title |
Experimental Study on the Performance Change of the Fin and Tube Type Heat Exchanger by the Frosting |
| Authors |
김정국(Jungkuk Kim) ; 小山 繁(Shigeru Koyama) ; 桑原 憲(Ken Kuwahara) ; 박병덕(Byung-Duck Park) ; 김동휘(Dong-Hwi Kim) ; 사용철(Yong-Cheol Sa) |
| Keywords |
열전달성능 ; 착상량 ; 열전달률 ; 압력강하 ; 향상계수 Heat transfer performance ; Frost mass ; Heat transfer rate ; Pressure drop ; Enhancement factor |
| Abstract |
The present study was investigates the effect of the parameters on the frost formation and heat transfer performance such as fin shape, air temperature and air velocity. Heat transfer rate and pressure drop by frost were experimentally investigated. Effect of the wet blub temperature and air velocity on the heat transfer performance has been also investigated. The heat transfer performance of the louver fin and tube type heat exchanger was higher by maximum of 0.85% than the corrugate fin type at the air temperature of 2.0/1.5℃. As the wet blub temperature of air were increased, the heat transfer rate, pressure drop and mass of frost of three test models were increased. Especially, the maximum heat transfer rate and maximum pressure drop were shown for the Type B louver fin heat exchanger. As an experimental result, the enhancement factor(EF) of louver fin and tube type heat exchanger was only 0.2～0.4 due to the high pressure drop. |