| Title |
Mass Flow Characteristics and Empirical Modeling ofR22 Flowing through Electronic Expansion Valves |
| Keywords |
EEV ; 전자팽창밸브 ; Mass flow rate ; 유량 ; Correlation ; 상관식 ; Orifice ; 오리피스 ; Dimensionless parameters ; 무차원 변수 ; EEV opening ; EEV 개도 |
| Abstract |
The objective of this study are to analyze the flow characteristics of R22 flowing through EEVs and to develop an empirical correlation to predict the refrigerant flow rate. The mass flow rates of EEVs with different geometries were measured at various condensing temperatures, subcoolings, and EEV openings. Based on the experimental data, an empirical correlation for mass flow predictions in EEVs was developed by modifying the orifice equation. The correlation showed good agreement with the measured data for R22 with average and standard deviations of 1.4% and 6.1%, respectively. Approximately 90% of the measured data were within ±10% of the predictions. |