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Correct integration of compressors and expanders in above ambient heat exchanger networks

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  • Fu, Chao
  • Gundersen, Truls

Abstract

The Appropriate Placement concept (also referred to as Correct Integration) is fundamental in Pinch Analysis. The placement of reactors, distillation columns, evaporators, heat pumps and heat engines in heat exchanger networks is well established. The placement of pressure changing equipment such as compressors and expanders is complex and less discussed in literature. A major difficulty is that both heat and work (not only heat) are involved. The integration of compressors and expanders separately into heat exchanger networks was recently investigated. A set of theorems were proposed for assisting the design. The problem is even more complex when both compressors and expanders are to be integrated. An important concern is about the sequence of integration with compressors and expanders, i.e. should compressors or expanders be implemented first. This problem is studied and a new theorem is formulated related to the Correct Integration of both compressors and expanders in above ambient heat exchanger networks. The objective is to minimize exergy consumption for the integrated processes. A graphical design methodology is developed for the integration of compressors and expanders into heat exchanger networks above ambient temperature.

Suggested Citation

  • Fu, Chao & Gundersen, Truls, 2016. "Correct integration of compressors and expanders in above ambient heat exchanger networks," Energy, Elsevier, vol. 116(P2), pages 1282-1293.
    • Handle: RePEc:eee:energy:v:116:y:2016:i:p2:p:1282-1293
    DOI: 10.1016/j.energy.2016.05.092
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    References listed on IDEAS

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    Cited by:

    1. Pavão, Leandro V. & Caballero, José A. & Ravagnani, Mauro A.S.S. & Costa, Caliane B.B., 2020. "A pinch-based method for defining pressure manipulation routes in work and heat exchange networks," Renewable and Sustainable Energy Reviews, Elsevier, vol. 131(C).
    2. Santos, Lucas F. & Costa, Caliane B.B. & Caballero, José A. & Ravagnani, Mauro A.S.S., 2020. "Synthesis and optimization of work and heat exchange networks using an MINLP model with a reduced number of decision variables," Applied Energy, Elsevier, vol. 262(C).
    3. Huang, Yongjian & Zhuang, Yu & Xing, Yafeng & Liu, Linlin & Du, Jian, 2023. "Multi-objective optimization for work-integrated heat exchange network coupled with interstage multiple utilities," Energy, Elsevier, vol. 273(C).
    4. Onishi, Viviani C. & Quirante, Natalia & Ravagnani, Mauro A.S.S. & Caballero, José A., 2018. "Optimal synthesis of work and heat exchangers networks considering unclassified process streams at sub and above-ambient conditions," Applied Energy, Elsevier, vol. 224(C), pages 567-581.
    5. Fu, Chao & Vikse, Matias & Gundersen, Truls, 2018. "Work and heat integration: An emerging research area," Energy, Elsevier, vol. 158(C), pages 796-806.

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