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Ecological optimization and coefficient of performance bounds of general refrigerators

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  • Long, Rui
  • Liu, Wei

Abstract

An analysis of COP and its bounds at maximum ecological criterion for general refrigerators is conducted. For generality, both the non-isothermal heat transfer processes and the internal dissipations are considered. Under different situations, the COP under the maximum ecological criterion have been studied systematically. And the general upper and lower bounds of the optimal COP have been obtained. Furthermore under maximum ecological criterion, the COP of general endoreversible refrigerators have also been studied. And the COP bounds of different kinds of refrigerators have been analyzed. As actual refrigerators may not operate under the condition of maximum COP or maximum cooling load, but operate under the maximum ecological condition which indicates the best compromise between the refrigeration rate and the loss of refrigeration rate. This paper could provide a practical insight for designing and operating actual refrigerators.

Suggested Citation

  • Long, Rui & Liu, Wei, 2016. "Ecological optimization and coefficient of performance bounds of general refrigerators," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 443(C), pages 14-21.
    • Handle: RePEc:eee:phsmap:v:443:y:2016:i:c:p:14-21
    DOI: 10.1016/j.physa.2015.09.052
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    References listed on IDEAS

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    1. Wu, Chih & Kiang, Robert L., 1992. "Finite-time thermodynamic analysis of a Carnot engine with internal irreversibility," Energy, Elsevier, vol. 17(12), pages 1173-1178.
    2. Long, Rui & Liu, Wei, 2015. "Ecological optimization for general heat engines," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 434(C), pages 232-239.
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    Cited by:

    1. Long, Rui & Li, Baode & Liu, Zhichun & Liu, Wei, 2016. "Ecological analysis of a thermally regenerative electrochemical cycle," Energy, Elsevier, vol. 107(C), pages 95-102.
    2. Lai, Xiaotian & Long, Rui & Liu, Zhichun & Liu, Wei, 2018. "A hybrid system using direct contact membrane distillation for water production to harvest waste heat from the proton exchange membrane fuel cell," Energy, Elsevier, vol. 147(C), pages 578-586.
    3. Long, Rui & Liu, Zhichun & Liu, Wei, 2018. "Performance analysis for minimally nonlinear irreversible refrigerators at finite cooling power," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 496(C), pages 137-146.

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