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Thermodynamic analysis on a modified ejector expansion refrigeration cycle with zeotropic mixture (R290/R600a) for freezers

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  • Yan, Gang
  • Bai, Tao
  • Yu, Jianlin

Abstract

This study presents a modified ejector expansion cycle with zeotropic mixtures (R290/R600a) for freezers, in which an ejector and a phase-separator are employed to enhance the cycle performance. Energetic and exergetic methods are used to theoretically investigate the system operating characteristics. In addition, comparative research among the modified cycle, conventional ejector expansion cycle and basic throttling cycle is carried out. The results demonstrate that the modified cycle exhibits higher refrigeration COP (coefficient of performance), volumetric refrigeration capacity and system exergy efficiency than conventional ejector expansion cycle and basic throttling cycle. Under the given operation conditions, the system performance improvements of the modified cycle in terms of the COP, refrigeration capacity and system exergy efficiency over the basic throttling cycle could reach about 56.0%, 4.5% and 77.7%, respectively. The performance characteristics of the proposed cycle show its potential practical advantages in freezer applications.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:energy:v:95:y:2016:i:c:p:144-154
    DOI: 10.1016/j.energy.2015.11.067
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    Cited by:

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    2. Prakash, M. & Sarkar, A. & Sarkar, J. & Chakraborty, J.P. & Mondal, S.S. & Sahoo, R.R., 2019. "Performance assessment of novel biomass gasification based CCHP systems integrated with syngas production," Energy, Elsevier, vol. 167(C), pages 379-390.
    3. 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.
    4. Miri, Seyedeh Mohadeseh & Farzaneh-Gord, Mahmood & Kianifar, Ali, 2023. "Triple-objective MPSO of zeotropic-fluid solar ejector cycle integrated with cold storage tank based on techno-economic criteria," Energy, Elsevier, vol. 283(C).
    5. Jeon, Yongseok & Kim, Dongwoo & Jung, Jongho & Jang, Dong Soo & Kim, Yongchan, 2018. "Comparative performance evaluation of conventional and condenser outlet split ejector-based domestic refrigerator-freezers using R600a," Energy, Elsevier, vol. 161(C), pages 1085-1095.
    6. Liang, Xiao & Zhou, Sai & Deng, Jiaju & He, Guogeng & Cai, Dehua, 2019. "Thermodynamic analysis of a novel combined double ejector-absorption refrigeration system using ammonia/salt working pairs without mechanical pumps," Energy, Elsevier, vol. 185(C), pages 895-909.
    7. Li, Fenglei & Wu, Changzhi & Wang, Xiangyu & Tian, Qi & Teo, Kok Lay, 2016. "Sparsity-enhanced optimization for ejector performance prediction," Energy, Elsevier, vol. 113(C), pages 25-34.
    8. Liang, Youcai & Ye, Kai & Zhu, Yan & Lu, Jidong, 2023. "Thermodynamic analysis of two-stage and dual-temperature ejector refrigeration cycles driven by the waste heat of exhaust gas," Energy, Elsevier, vol. 278(C).
    9. Feili, Milad & Rostamzadeh, Hadi & Ghaebi, Hadi, 2020. "A new high-efficient cooling/power cogeneration system based on a double-flash geothermal power plant and a novel zeotropic bi-evaporator ejector refrigeration cycle," Renewable Energy, Elsevier, vol. 162(C), pages 2126-2152.

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