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Thermodynamic analysis on theoretical models of cycle combined heat exchange process: The reversible heat exchange process

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  • Zhang, Chenghu
  • Li, Yaping

Abstract

Concept of reversible heat exchange process as the theoretical model of the cycle combined heat exchanger could be useful to determine thermodynamics characteristics and the limitation values in the isolated heat exchange system. In this study, the classification of the reversible heat exchange processes is presented, and with the numerical method, medium temperature variation tendency and the useful work production and usage in the whole process are investigated by the construction and solution of the mathematical descriptions. Various values of medium inlet temperatures and heat capacity ratio are considered to analyze the effects of process parameters on the outlet temperature lift/drop. The maximum process work transferred from the Carnot cycle region to the reverse cycle region is also researched. Moreover, influence of the separating point between different sub-processes on temperature variation profile and the process work production are analyzed. In addition, the heat-exchange-enhancement-factor is defined to study the enhancement effect of the application of the idealized process in the isolated heat exchange system, and the variation degree of this factor with process parameters change is obtained. The research results of this paper can be a theoretical guidance to construct the cycle combined heat exchange process in the practical system.

Suggested Citation

  • Zhang, Chenghu & Li, Yaping, 2017. "Thermodynamic analysis on theoretical models of cycle combined heat exchange process: The reversible heat exchange process," Energy, Elsevier, vol. 124(C), pages 565-578.
    • Handle: RePEc:eee:energy:v:124:y:2017:i:c:p:565-578
    DOI: 10.1016/j.energy.2017.02.103
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    Cited by:

    1. Katharina Hecht & Abraham Ortega Reboso & Michelle van der Vegt & Jaco Appelman & Maibritt Pedersen Zari, 2024. "Ecologically Regenerative Building Systems through Exergy Efficiency: Designing for Structural Order and Ecosystem Services," Land, MDPI, vol. 13(9), pages 1-18, August.
    2. Ibrahim, Thamir k. & Mohammed, Mohammed Kamil & Awad, Omar I. & Rahman, M.M. & Najafi, G. & Basrawi, Firdaus & Abd Alla, Ahmed N. & Mamat, Rizalman, 2017. "The optimum performance of the combined cycle power plant: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 459-474.
    3. Zhang, Chenghu & Li, Yaping, 2018. "Thermodynamic performance of cycle combined large temperature drop heat exchange process:Theoretical models and advanced process," Energy, Elsevier, vol. 150(C), pages 1-18.

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