Journal of Thermal Science

, Volume 27, Issue 3, pp 230–240 | Cite as

Thermodynamic Analysis of a Mixed Refrigerant Ejector Refrigeration Cycle Operating with Two Vapor-liquid Separators

  • Yingying Tan
  • Youming Chen
  • Lin Wang


A mixed refrigerant ejector refrigeration cycle operating with two-stage vapor-liquid separators (MRERC2) is proposed to obtain refrigeration temperature at -40°C. The thermodynamic investigations on performance of MRERC2 using zeotropic mixture refrigerant R23/R134a are performed, and the comparisons of cycle performance between MRERC2 and MRERC1 (MRERC with one-stage vapor-liquid separator) are conducted. The results show that MRERC2 can achieve refrigeration temperature varying between -23.9°C and -42.0°C when ejector pressure ratio ranges from 1.6 to 2.3 at the generation temperature of 57.3-84.9°C. The parametric analysis indicates that increasing condensing temperature decreases coefficient of performance (COP) of MRERC2, and increasing ejector pressure ratio and mass fraction of the low boiling point component in the mixed refrigerant can improve COP of MRERC2. The MRERC2 shows its potential in utilizing low grade thermal energy as driving power to obtain low refrigeration temperature for the ejector refrigeration cycle.


Ejector Refrigeration Zeotropic Refrigerant Vapor-liquid Separator Refrigeration Temperature 


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  1. [1]
    Yu J. and Du Z.. Theoretical study of a transcritical ejector refrigeration cycle with refrigerant R143a. Renewable Energy, 2010, 35(9): 2034–2039.CrossRefGoogle Scholar
  2. [2]
    Sun D.W. Comparative study of the performance of an ejector refrigeration cycle operating with various refrigerants. Energy Conversion and Management, 1999, 40(8): 873–884.CrossRefGoogle Scholar
  3. [3]
    Selvaraju A. and Mani A. Analysis of a vapour ejector refrigeration system with environment friendly refrigerants. International Journal of Thermal Sciences, 2004, 43(9): 915–921.CrossRefGoogle Scholar
  4. [4]
    Alexis G. and Karayiannis E.. A solar ejector cooling system using refrigerant R134a in the Athens area. Renewable Energy, 2005, 30(9):1457–1469.CrossRefGoogle Scholar
  5. [5]
    Roman R. and Hernandez J.I.. Performance of ejector cooling systems using low ecological impact refrigerants. International Journal of Refrigeration, 2011, 34(7): 1707–1716.CrossRefGoogle Scholar
  6. [6]
    Chen J., Havtun H. and Palm B.. Screening of working fluids for the ejector refrigeration system. International Journal of Refrigeration, 2014, 47: 1–14.CrossRefGoogle Scholar
  7. [7]
    He S., Li Y., and Wang R.Z.. Progress of mathematical modeling on ejectors. Renewable and Sustainable Energy Reviews, 2009, 13(8): 1760–1780.CrossRefGoogle Scholar
  8. [8]
    Besagni G, Mereu R, Inzoli F. CFD Study of Ejector Flow Behavior in a Blast Furnace Gas Galvanizing Plant. Journal of Thermal Science, 2015, 24(1): 58–66ADSCrossRefGoogle Scholar
  9. [9]
    Huang B.J., et al. A 1-D analysis of ejector performance Analyse unidimensionnelle de la performance d'un éjecteur. International Journal of Refrigeration, 1999, 22(5): 354–364.CrossRefGoogle Scholar
  10. [10]
    Ouzzane M. and Aidoun Z.. Model development and numerical procedure for detailed ejector analysis and design. Applied Thermal Engineering, 2003, 23(18): 2337–2351.CrossRefGoogle Scholar
  11. [11]
    Cizungu K., Groll M., and Ling Z.G.. Modelling and optimization of two-phase ejectors for cooling systems. Applied Thermal Engineering, 2005, 25(13): 1979–1994.CrossRefGoogle Scholar
  12. [12]
    Zhu Y. and Li Y.. Novel ejector model for performance evaluation on both dry and wet vapors ejectors. International Journal of Refrigeration, 2009, 32(1): 21–31.ADSCrossRefGoogle Scholar
  13. [13]
    Cardemil J. M. and Colle S.. A general model for evaluation of vapor ejectors performance for application in refrigeration. Energy Conversion and Management, 2012, 64: 79–86.CrossRefGoogle Scholar
  14. [14]
    Chen W., et al. A 1D model to predict ejector performance at critical and sub-critical operational regimes. International Journal of Refrigeration, 2013, 36(6): 1750–1761.CrossRefGoogle Scholar
  15. [15]
    Zhang B. and Shen S.. A theoretical study on a novel bi-ejector refrigeration cycle. Applied Thermal Engineering, 2006, 26(5‒6): 622–626.MathSciNetCrossRefGoogle Scholar
  16. [16]
    Yu J., et al. A new ejector refrigeration system with an additional jet pump. Applied Thermal Engineering, 2006, 26(2-3): 312–319.MathSciNetCrossRefGoogle Scholar
  17. [17]
    Sokolov M. and Hershgal D.. Enhanced ejector refrigeration cycles powered by low grade heat. Part 1. Systems characterization. International Journal of Refrigeration, 1990, 13(6): 351–356.CrossRefGoogle Scholar
  18. [18]
    Sun D.W. Solar powered combined ejector-vapour compression cycle for air conditioning and refrigeration. Energy Conversion and Management, 1997, 38(5): 479–491.CrossRefGoogle Scholar
  19. [19]
    Chesi A., et al. Suitability of coupling a solar powered ejection cycle with a vapour compression refrigerating machine. Applied Energy, 2012, 97: 374–383.CrossRefGoogle Scholar
  20. [20]
    He Y. and Chen G.. Experimental study on an absorption refrigeration system at low temperatures. International Journal of Thermal Sciences, 2007, 46(3): 294–299.CrossRefGoogle Scholar
  21. [21]
    Du K., et al. A study on the cycle characteristics of an auto-cascade refrigeration system. Experimental Thermal and Fluid Science, 2009, 33(2): 240–245.CrossRefGoogle Scholar
  22. [22]
    Missimer D. J. Refrigerant conversion of auto-refrigerating cascade (ARC) systems. International Journal of Refrigeration, 1997, 20(3): 201–207.CrossRefGoogle Scholar
  23. [23]
    Wang Q., et al. An investigation of the mixing position in the recuperators on the performance of an auto-cascade refrigerator operating with a rectifying column. Cryogenics, 2012, 52(11): 581–589.ADSCrossRefGoogle Scholar
  24. [24]
    Wang Q., et al. Numerical investigations on the performance of a single-stage auto-cascade refrigerator operating with two vapor–liquid separators and environmentally benign binary refrigerants. Applied Energy, 2013, 112: 949–955.CrossRefGoogle Scholar
  25. [25]
    Yan G., Hu H., and Yu J.. Performance evaluation on an internal auto-cascade refrigeration cycle with mixture refrigerant R290/R600a. Applied Thermal Engineering, 2015. 75: 994–1000.CrossRefGoogle Scholar
  26. [26]
    Tan Y., Wang L., and Liang K., Thermodynamic performance of an auto-cascade ejector refrigeration cycle with mixed refrigerant R32 + R236fa. Applied Thermal Engineering, 2015, 84: 268–275.CrossRefGoogle Scholar
  27. [27]
    Gong M.Q., Wu J.F., and Luo E.C.. Performances of the mixed-gases Joule–Thomson refrigeration cycles for cooling fixed-temperature heat loads. Cryogenics, 2004, 44(12): 847–857.ADSCrossRefGoogle Scholar
  28. [28]
    Yan G., Chen J., and Yu J.. Energy and exergy analysis of a new ejector enhanced auto-cascade refrigeration cycle. Energy Conversion and Management, 2015, 105: 509–517.CrossRefGoogle Scholar
  29. [29]
    Keenan H., Neumann, E.P. and Lustwer K, F. An investigation of ejector design by analysis and experiment. Journal of Applied Mechanics-transactions of the ASME, 1950, ASME 72: 299–309.Google Scholar
  30. [30]
    Wang J., Y. Dai, and Z. Sun. A theoretical study on a novel combined power and ejector refrigeration cycle. International Journal of Refrigeration, 2009, 32(6): 1186–1194.CrossRefGoogle Scholar
  31. [31]
    Yu J., Song X., and Ma M.. Theoretical study on a novel R32 refrigeration cycle with a two-stage suction ejector. International Journal of Refrigeration, 2013, 36(1): 166–172.CrossRefGoogle Scholar
  32. [32]
    NIST thermodynamic and transport properties of refrigerants and refrigerant mixtures REFPROP. 2002, NIST Standard Reference Database 23.Google Scholar
  33. [33]
    Alexis G.K. and Katsanis J.S.. Performance characteristics of a methanol ejector refrigeration unit. Energy Conversion and Management, 2004, 45(17): 2729–2744.CrossRefGoogle Scholar

Copyright information

© Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Civil EngineeringHunan UniversityChangshaChina
  2. 2.Institute of Refrigeration and Air-ConditioningHenan University of Science and TechnologyLuoyangChina

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