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Thermodynamic analysis of a novel Ejector Enhanced Vapor Compression Refrigeration (EEVCR) cycle

Author

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  • Elakhdar, M.
  • Tashtoush, B.M.
  • Nehdi, E.
  • Kairouani, L.

Abstract

This paper presents a theoretical thermodynamic analysis of a novel Ejector Enhanced Vapor Compression Refrigeration (EEVCR) cycle using zeotropic mixture of propane and isobutane (R290/R600a) as a refrigerant to replace R134a in domestic refrigerators/freezers. 1 D thermodynamic model for a constant area mixing ejector is used to estimate the cycle performance under the condition of optimal operating regime. The Coefficient of Performance (COP), the Volumetric Cooling Capacity (VCC), Qv and the compressor pressure ratio are studied for the novel EEVCR cycle and the results are compared to the conventional cycle using pure fluid R134a and zeotropic mixture R290/R600a. A comparative study was carried out to determine the propane mass fraction, z in the zeotropic mixture that would be a suitable replacement for R134a. The results indicated that the cycle COP and Qv could be improved by 23% and 62.71%, respectively. In addition, the cycle COP and Qv for the proposed EEVCR cycle were higher by 70% than those for a modified ejector expansion cycle. Finally, the propane mass fraction of 60% in the zeotropic R290/R600a mixture was found to have similar saturation pressure as R134a and the cycle COP and Qv were found similar to those of R134a.

Suggested Citation

  • Elakhdar, M. & Tashtoush, B.M. & Nehdi, E. & Kairouani, L., 2018. "Thermodynamic analysis of a novel Ejector Enhanced Vapor Compression Refrigeration (EEVCR) cycle," Energy, Elsevier, vol. 163(C), pages 1217-1230.
    • Handle: RePEc:eee:energy:v:163:y:2018:i:c:p:1217-1230
    DOI: 10.1016/j.energy.2018.09.050
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    References listed on IDEAS

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    1. Wang, Xiao & Yu, Jianlin, 2015. "An experimental investigation on a novel ejector enhanced refrigeration cycle applied in the domestic refrigerator-freezer," Energy, Elsevier, vol. 93(P1), pages 202-209.
    2. Yan, Gang & Bai, Tao & Yu, Jianlin, 2016. "Thermodynamic analysis on a modified ejector expansion refrigeration cycle with zeotropic mixture (R290/R600a) for freezers," Energy, Elsevier, vol. 95(C), pages 144-154.
    3. Yang, Mina & Jung, Chung Woo & Kang, Yong Tae, 2015. "Development of high efficiency cycles for domestic refrigerator-freezer application," Energy, Elsevier, vol. 93(P2), pages 2258-2266.
    4. El-Morsi, Mohamed, 2015. "Energy and exergy analysis of LPG (liquefied petroleum gas) as a drop in replacement for R134a in domestic refrigerators," Energy, Elsevier, vol. 86(C), pages 344-353.
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    Cited by:

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    5. 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).
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    9. Chen, Qi & Yu, Mengqi & Yan, Gang & Yu, Jianlin, 2022. "Thermodynamic analyses of a modified ejector enhanced dual temperature refrigeration cycle for domestic refrigerator/freezer application," Energy, Elsevier, vol. 244(PA).

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