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Entropy resistance minimization: An alternative method for heat exchanger analyses

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  • Cheng, XueTao

Abstract

In this paper, the concept of entropy resistance is proposed based on the entropy generation analyses of heat transfer processes. It is shown that smaller entropy resistance leads to larger heat transfer rate with fixed thermodynamic force difference and smaller thermodynamic force difference with fixed heat transfer rate, respectively. For the discussed two-stream heat exchangers in which the heat transfer rates are not given and the three-stream heat exchanger with prescribed heat capacity flow rates and inlet temperatures of the streams, smaller entropy resistance leads to larger heat transfer rate. For the two-stream heat exchangers with fixed heat transfer rate, smaller entropy resistance leads to larger effectiveness. Furthermore, it is shown that smaller values of the concepts of entropy generation numbers and modified entropy generation number do not always correspond to better performance of the discussed heat exchangers.

Suggested Citation

  • Cheng, XueTao, 2013. "Entropy resistance minimization: An alternative method for heat exchanger analyses," Energy, Elsevier, vol. 58(C), pages 672-678.
    • Handle: RePEc:eee:energy:v:58:y:2013:i:c:p:672-678
    DOI: 10.1016/j.energy.2013.05.024
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    References listed on IDEAS

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    Cited by:

    1. Huang, Kefeng & Karimi, I.A., 2016. "Work-heat exchanger network synthesis (WHENS)," Energy, Elsevier, vol. 113(C), pages 1006-1017.
    2. Ebrahimzadeh, Edris & Wilding, Paul & Frankman, David & Fazlollahi, Farhad & Baxter, Larry L., 2016. "Theoretical and experimental analysis of dynamic heat exchanger: Retrofit configuration," Energy, Elsevier, vol. 96(C), pages 545-560.
    3. Guo, Xiaofeng & Fan, Yilin & Luo, Lingai, 2014. "Multi-channel heat exchanger-reactor using arborescent distributors: A characterization study of fluid distribution, heat exchange performance and exothermic reaction," Energy, Elsevier, vol. 69(C), pages 728-741.
    4. Wang, Chaoyang & Liu, Ming & Zhao, Yongliang & Qiao, Yongqiang & Yan, Junjie, 2018. "Entropy generation analysis on a heat exchanger with different design and operation factors during transient processes," Energy, Elsevier, vol. 158(C), pages 330-342.
    5. Daróczy, László & Janiga, Gábor & Thévenin, Dominique, 2014. "Systematic analysis of the heat exchanger arrangement problem using multi-objective genetic optimization," Energy, Elsevier, vol. 65(C), pages 364-373.
    6. Mehdizadeh-Fard, Mohsen & Pourfayaz, Fathollah, 2018. "A simple method for estimating the irreversibly in heat exchanger networks," Energy, Elsevier, vol. 144(C), pages 633-646.

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