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Optimization of the specific rate of refrigeration in combined refrigeration cycles

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  • Chen, Lingen
  • Sun, Fengrui
  • Chen, Wenzhen

Abstract

The optimization problem of a combined refrigeration cycle formed by two endoreversible Carnot refrigeration cycles in series without intermediate reservoirs has been studied using finite-time thermodynamics. The fundamental relation between cooling quantity and coefficient of performance (COP) of the combined cycle is derived for a general physical model of a combined cycle. Relations are derived between the SROR (=optimal specific rate of refrigeration, i.e. the average rate of refrigeration per unit of total heat-transfer surface area) and the COP for a piston-type, stable flow model of combined cycles. Our results may be extended to an endoreversible, combined refrigeration cycle formed by more than two endoreversible Carnot refrigeration cycles.

Suggested Citation

  • Chen, Lingen & Sun, Fengrui & Chen, Wenzhen, 1995. "Optimization of the specific rate of refrigeration in combined refrigeration cycles," Energy, Elsevier, vol. 20(10), pages 1049-1053.
    • Handle: RePEc:eee:energy:v:20:y:1995:i:10:p:1049-1053
    DOI: 10.1016/0360-5442(95)00051-H
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    Cited by:

    1. Xia, Shaojun & Chen, Lingen & Sun, Fengrui, 2011. "Power-optimization of non-ideal energy converters under generalized convective heat transfer law via Hamilton-Jacobi-Bellman theory," Energy, Elsevier, vol. 36(1), pages 633-646.
    2. Göktun, Selahattin, 1999. "Optimal performance of an irreversible, heat engine-driven, combined vapor compression and absorption refrigerator," Applied Energy, Elsevier, vol. 62(2), pages 67-79, February.
    3. Meng, Fankai & Chen, Lingen & Sun, Fengrui, 2011. "A numerical model and comparative investigation of a thermoelectric generator with multi-irreversibilities," Energy, Elsevier, vol. 36(5), pages 3513-3522.
    4. Zhou, Junle & Chen, Lingen & Ding, Zemin & Sun, Fengrui, 2016. "Analysis and optimization with ecological objective function of irreversible single resonance energy selective electron heat engines," Energy, Elsevier, vol. 111(C), pages 306-312.
    5. Chen, Lingen & Ding, Zemin & Sun, Fengrui, 2011. "Model of a total momentum filtered energy selective electron heat pump affected by heat leakage and its performance characteristics," Energy, Elsevier, vol. 36(7), pages 4011-4018.
    6. Chen, Lingen & Sun, Fengrui & Wu, Chih, 2004. "Optimal allocation of heat-exchanger area for refrigeration and air-conditioning plants," Applied Energy, Elsevier, vol. 77(3), pages 339-354, March.

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