Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Mass Flow Characteristics and Empirical Modeling of R22 Flowing through Electronic Expansion Valves

R22를 적용한 전자팽창밸브의 냉매유량 특성 및 유량예측 모델링

  • Park, Cha-Sik (Graduate School of Mechanical Engineering, Korea University) ;
  • Lee, Sun-Il (Graduate School of Mechanical Engineering, Korea University) ;
  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University) ;
  • Lee, Young-Soo (Korea Institute of Energy Research)
  • 박차식 (고려대학교 기계공학과 대학원) ;
  • 이선일 (고려대학교 기계공학과 대학원) ;
  • 김용찬 (고려대학교 기계공학과) ;
  • 이영수 (한국에너지기술연구원)
  • Published : 2006.11.10
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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 ${\pm}10%$ of the predictions.

Keywords

References

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