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Performance Analysis of Refrigeration System by Adjusting Manual Expansion Valve

수동식 팽창밸브 조정에 의한 냉동시스템의 성능 분석

  • Yang, Hyung-Suk (Dept. of Automation of Industrial Installation, Korea Polytechnic VI College)
  • 양형석 (한국폴리텍VI대학 대구캠퍼스, 산업설비자동화과)
  • Received : 2011.05.28
  • Accepted : 2011.08.24
  • Published : 2011.08.31

Abstract

This study analyzed facts affecting the performance of refrigeration systems after throttling actions, by changing the amount of refrigerant according to adjusting the opening of manual expansion valve to 80%, or 20% with vapor compressional refrigeration training equipment. At opening of 20%, the inlet and outlet temperature of compressor, subcooling and superheat, condenser heat, refrigeration effect, flash gas heat, coefficient of performance were higher, while at 80%, condensing pressure, evaporating pressure, compression work were higher, Thus, we could see changes in the amount of refrigerant affect the performance of the refrigeration system.

Keywords