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Numerical investigations on the performance of a single-stage auto-cascade refrigerator operating with two vapor–liquid separators and environmentally benign binary refrigerants

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  • Wang, Q.
  • Li, D.H.
  • Wang, J.P.
  • Sun, T.F.
  • Han, X.H.
  • Chen, G.M.

Abstract

The performance of auto-cascade refrigerator operating with two vapor–liquid separators and six binary refrigerants (R23/R134a, R23/R227ea, R23/R236fa, R170/R290, R170/R600a and R170/R600) was investigated with a new approach at the temperature level of −60°C. The results show that the pressure ratio, the composition of mixed refrigerants, the main stream ratio and the pressure level are the main factors affecting COP, which deserve a good balance in the optimization. The overall and local matching of heat capacity rates of the hot and cold refrigerants in the recuperators are both important for the improvement of COP. Among these binary refrigerants, the 0.55mol fraction of R23 for R23/R236fa and R170 for R170/R600 are the most prospective compositions in the nonflammable refrigerants and natural refrigerants for medium suction pressure compressors, respectively. The new approach employed in this paper also suggests a promising application to the optimization of the performance with multi-component refrigerants and different temperature levels.

Suggested Citation

  • Wang, Q. & Li, D.H. & Wang, J.P. & Sun, T.F. & Han, X.H. & Chen, G.M., 2013. "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, Elsevier, vol. 112(C), pages 949-955.
    • Handle: RePEc:eee:appene:v:112:y:2013:i:c:p:949-955
    DOI: 10.1016/j.apenergy.2013.01.081
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    References listed on IDEAS

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    1. Park, Ki-Jung & Seo, Taebeom & Jung, Dongsoo, 2007. "Performance of alternative refrigerants for residential air-conditioning applications," Applied Energy, Elsevier, vol. 84(10), pages 985-991, October.
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    2. Qin, Yanbin & Li, Nanxi & Zhang, Hua & Liu, Baolin, 2022. "Study on the performance of an energy-efficient three-stage auto-cascade refrigeration system enhanced with a pressure regulator," Energy, Elsevier, vol. 258(C).
    3. Zhang, Ying & Deng, Shuai & Ni, Jiaxin & Zhao, Li & Yang, Xingyang & Li, Minxia, 2017. "A literature research on feasible application of mixed working fluid in flexible distributed energy system," Energy, Elsevier, vol. 137(C), pages 377-390.
    4. Tan, Yingying & Li, Xiuzhen & Wang, Lin & Huang, Lisheng & Xiao, Yi & Wang, Zhanwei & Li, Shaoqiang, 2023. "Thermodynamic performance of the fractionated auto-cascade refrigeration cycle coupled with two-phase ejector using R1150/R600a at −80 °C temperature level," Energy, Elsevier, vol. 281(C).
    5. Sun, Zhili & Liang, Youcai & Liu, Shengchun & Ji, Weichuan & Zang, Runqing & Liang, Rongzhen & Guo, Zhikai, 2016. "Comparative analysis of thermodynamic performance of a cascade refrigeration system for refrigerant couples R41/R404A and R23/R404A," Applied Energy, Elsevier, vol. 184(C), pages 19-25.
    6. Qin, Yanbin & Li, Nanxi & Zhang, Hua & Liu, Baolin, 2021. "Energy and exergy analysis of a Linde-Hampson refrigeration system using R170, R41 and R1132a as low-GWP refrigerant blend components to replace R23," Energy, Elsevier, vol. 229(C).
    7. Asgari, Sahar & Noorpoor, A.R. & Boyaghchi, Fateme Ahmadi, 2017. "Parametric assessment and multi-objective optimization of an internal auto-cascade refrigeration cycle based on advanced exergy and exergoeconomic concepts," Energy, Elsevier, vol. 125(C), pages 576-590.
    8. Liu, Ye & Yu, Jianlin, 2018. "Performance analysis of an advanced ejector-expansion autocascade refrigeration cycle," Energy, Elsevier, vol. 165(PB), pages 859-867.
    9. Bai, Tao & Yu, Jianlin & Yan, Gang, 2016. "Advanced exergy analysis on a modified auto-cascade freezer cycle with an ejector," Energy, Elsevier, vol. 113(C), pages 385-398.
    10. Yu, Binbin & Yang, Jingye & Wang, Dandong & Shi, Junye & Guo, Zhikai & Chen, Jiangping, 2019. "Experimental energetic analysis of CO2/R41 blends in automobile air-conditioning and heat pump systems," Applied Energy, Elsevier, vol. 239(C), pages 1142-1153.
    11. Bai, Tao & Yan, Gang & Yu, Jianlin, 2018. "Experimental research on the pull-down performance of an ejector enhanced auto-cascade refrigeration system for low-temperature freezer," Energy, Elsevier, vol. 157(C), pages 647-657.
    12. Qin, Yanbin & Li, Nanxi & Zhang, Hua & Jin, Binhui & Liu, Baolin, 2022. "Experimental characterization of an innovative refrigeration system coupled with Linde-Hampson cycle and auto-cascade cycle for multi-stage refrigeration temperature applications," Energy, Elsevier, vol. 240(C).

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