Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Analysis and Performance Test of an Electronic Expansion Valve for CO2

CO2 냉매용 전자팽창밸브의 해석 및 평가

  • Kim, Ook-Joong (Energy Plant Research Division, Korea Institute of Machinery and Materials) ;
  • Yoon, Seok-Ho (Energy Plant Research Division, Korea Institute of Machinery and Materials) ;
  • Hong, Yong-Ju (Energy Plant Research Division, Korea Institute of Machinery and Materials) ;
  • Kim, Jeong-Yup (Nano-Mechanical Systems Research Division, Korea Institute of Machinery and Materials) ;
  • Kang, Sin-Il (Jahwa Electronics Co. Ltd.)
  • 김욱중 (한국기계연구원 에너지플랜트연구본부) ;
  • 윤석호 (한국기계연구원 에너지플랜트연구본부) ;
  • 홍용주 (한국기계연구원 에너지플랜트연구본부) ;
  • 김정엽 (한국기계연구원 나노융합기계연구본부) ;
  • 강신일 (자화전자(주))
  • Published : 2009.06.25
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Abstract

Fluid flow and structural analyses of an electronic expansion valve (EEV) using CO2 as a working refrigerant are carried out to estimate the mass flow rate and maximum stress. An engineering sample EEV that the orifice diameter is 1.8 mm was fabricated. The mass flow rates were measured at various EEV inlet temperatures and pressures for several EEV openings using experimental heat pump system. The sample EEV has over 35 MPa burst pressure and the maximum mass flow rate of CO2 through the EEV increased to 100 g/s at full opening condition.

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