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

  • 제8권1호
  • /
  • Pages.45-54
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  • 1996
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

R32/125/134a를 사용한 오리피스 팽창장치의 성능실험 및 모델링

Experimentation and Modeling of R32/125/134a Flow Through Short Tube Orifices

  • 김용찬 (고려대학교 공과대학 기계공학과)
  • 발행 : 1996.02.01
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초록

An experimental investigation on the two-phase flow through tube orifices was performed with the refrigerant mixture of R32/125/134a(30/10/60). A series of tests were conducted to generate wide range of data at varying operation conditions with four short tubes. The tests include both single and two-phase flow conditions at the inlet of the short tube with different oil concentrations. Experimental data were presented as a function of major operating parameters and short tube diameter. Based on test results and data analysis, a semi-empirical flow model was developed to predict the mass flow rate through short tube orifices with a given set of conditions. The flow model was formed to cover both single and two-phase flow at the inlet of short tube with considering the effects of oil concentration.

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참고문헌

  1. ASHRAE Trans. v.100 HCFC-22 alternatives for air conditioners and heat pumps Givens(et al.)
  2. ASHRAE Transactions v.96 Experimentation, analysis, and correlation of refrigerant-22 flow through short tube restrictors Aaron,A.A.;Domanski,P.A.
  3. Heat Pumps and Refrigeration Systems Design, Analysis and Applications v.AES-29 An experimental study of two-phase flow of HFC-134a through short tube orifices Kim,Y.;O'Neal,D.L.
  4. 제1회 한일 냉동공조기술세미나 R22 대체동향과 냉매주입량 및 팽창변크기에 따른 성능변화 김용찬
  5. ANSI/ASHRAE Standard 41.4-1984 Standard method for measurement of proportion of oil in liquid refrigerant, Atlanta ASHRAE
  6. Int. J. of Heat and Mass Transfer v.37 no.9 The effect of oil on the two-phase flow of refrigerant-134a through short tube orifices Kim,Y.;O'Neal,D.L.
  7. ASHRAE Transactions v.100 Two-phase flow of R-22 through short tube orifices Kim,Y.;O'Neal D.L.
  8. Fluid meters-their theory and application(sixth ed.) ASME
  9. Refri. Eng. v.61 Metastable flow of Freon-12 Pasqua,P.F.
  10. ASHRAE Transactions v.79 Single and two-phase flow of dichlorodifluoromethane(R-12), through sharp-edged orifice Davies,D.;Daniels,T.C.
  11. ASHRAE Transactions v.88 Short tube refrigerant restrictors Mei,V.C.