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

  • 제16권10호
  • /
  • Pages.895-900
  • /
  • 2004
  • /
  • 1229-6422(pISSN)
  • /
  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

일반화된 오리피스의 유량예측 상관식 및 유량선도

A Generalized Flow Model and Flow Charts for Predicting Mass Flow Rate through Short Tube Orifices

  • 최종민 (국립 한밭대학교 기계공학부) ;
  • 김용찬 (고려대학교 기계공학과) ;
  • 곽재수 (한국항공우주연구원 항공추진그룹) ;
  • 권병철 (국립 한밭대학교 기계공학부)
  • Choi Jong Min (Department of Mechanical Engineering, Hanbat National University) ;
  • Kim Yongchan (Department of Mechanical Engineering, Korea University) ;
  • Kwak Jae Su (Aeropropulsion Department, KARI) ;
  • Kwon Byong Cheol (Department of Mechanical Engineering, Hanbat National University)
  • 발행 : 2004.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

With the phaseout of CFC and HCFC refrigerants, refrigeration and heat pump systems must be redesigned to match and improve system performance with alternative refrigerants. A generalized flow model for predicting mass flow rate through short tube orifices is derived from a power law form of dimensionless parameters generated by Pi-theorem. The database for developing the correlation includes extensive experimental data for R12, R22, R134a, R407C, R410A, and R502 from the open literature. The correlation yields an average deviation of $0.3\%$ and a standard deviation of $6.1\%$ based on the present database. In addition, rating charts for predicting refrigerant flow rate through short tube orifices are generated for R12, R22, R134a, R407C, R410A, and R502.

키워드

참고문헌

  1. Molina, M. J. and Rowland, F. S., 1974, Start-ospheric sink for chlorofluoromethanes; chlo-rine atom catalyzed destruction of ozone, Nature, Vol. 249, pp. 810-812 https://doi.org/10.1038/249810a0
  2. Kim, Y. C. and O'Neal, D. L., 1994, A semi-empirical model of two-phase flow of re-frigerant-134a through short tube orifices, Experimental Thermal and Fluid Science, Vol. 9, No. 4, pp. 426-436 https://doi.org/10.1016/0894-1777(94)90020-5
  3. Payne, W. V., 1997, A universal mass flow-rate correlation for refrigerants and refrig-erant/oil mixtures. Ph.D Thesis, Texas A&M Univ., USA
  4. Aaron, A. A. and Domanski, P. A., 1989, An experimental investigation and modeling of the flow rate of refrigerant 22 through the short tube restrictor, NIST-IR 89-4120, US Department of Commerce, NIST.
  5. Kim, Y. C. and O'Neal, D. L., 1994, Two-phase flow of R-22 through short tube ori-fices, ASHRAE Trans., Vol. 100, No. 1, pp. 323-334
  6. Payne, W. V. and O'Neal, D. L., 1995, Two-phase flow of two HFC refigerant mixtures through short tube orifices, EPA-600/R-95-168, USA
  7. Singh, G. M., Hrnjak, P. S. and Bullard. C. W., 2001, Flow of refrigerant 134a through orifices tubes, HVAC&R Research, Vol. 9, No. 7, pp. 245-262
  8. McLinden, M. O., Klein, S. A., Lemmon, E. W. and Peskin, A. P., 1998, REFPROP: Thermo-dynamic and transport properties of refrig-erants and refrigerant mixtures, NIST Stan-dard Reference Database 23, Version 6.01
  9. Chen, Z. H., Li, R. Y., Lin, S. and Chen, Z. Y., 1990, A correlation for metastable flow of refrigerant 12 through capillary tubes, ASHRAE Trans., Vol. 96, No. 1, pp. 550-554