| Title |
An Experimental Study on the Optimal Intermediate Pressure of a 2-Stage Compression Heat Pump Using River Water |
| Authors |
박차식(Chasik Park) ; 정태훈(Taehun Jung) ; 주영주(Youngju Joo) ; 김용찬(Yongchan Kim) |
| Keywords |
하천수 ; 2단압축 열펌프 ; 전자팽창밸브 ; 중간압 River water ; 2-stage compression heat pump ; Electronic expansion valve ; Intermediate pressure |
| Abstract |
The objective of this study is to predict optimal intermediate pressure of a 2-stage compression heat pump system using river water. To determine the maximum performance of the 2-stage compression heat pump system, the experimental evaluations on the 2-stage compression cycle were carried out under various operating conditions. Electronic expansion valves were applied to control intermediate pressure and superheat. Based on the experimental data, an empirical correlation for predicting optimal intermediate pressure which considering cycle operating parameters was developed. The present correlation was verified by comparing the predicted data with the measured data. The predictions showed a good agreement with the measured data within a relative deviation of ±4% at various operating conditions. |