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      Relating bridge analysis for heat exchanger network retrofit identification to retrofit design

      Walmsley, Timothy Gordon; Lal, Nathan S.; Varbanov, Petar S.; Klemeš, Jiří Jaromír
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      DOI
       10.3303/CET1870050
      Link
       www.cetjournal.it
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      Walmsley, T. G., Lal, N. S., Varbanov, P. S., & Klemeš, J. Jj. (2018). Relating bridge analysis for heat exchanger network retrofit identification to retrofit design. Chemical Engineering Transactions, 70, 295–300. https://doi.org/10.3303/CET1870050
      Permanent Research Commons link: https://hdl.handle.net/10289/13334
      Abstract
      The aim of the paper is to improve a recently developed automated HEN retrofit targeting method by linking the shapes of the Exchanger Shifted Composite Curve (ESCC) and Exchanger Grand Composite Curve (EGCC) to the required HEN retrofit design measures. The automated HEN retrofit targeting method is based on Bridge Analysis, which identifies new and existing utility paths for energy saving through the enhancement and/or addition of heat exchanger area and the installation of new exchangers. To build the required understanding, generic cases are analysed, one of which is presented. Links between the Exchanger Composite Curves with the required HEN retrofit design are established. The analysis concludes that the Heat Surplus-Deficit Cascade for some recovery exchangers may be divided two sections – Pinched and non-Pinched sections – to better represent and identify the number and type of modifications that a retrofit opportunity will require.
      Date
      2018
      Type
      Journal Article
      Publisher
      AIDIC Servizi S.r.l.
      Rights
      Copyright © 2018, AIDIC Servizi S.r.l. Used with permission.
      Collections
      • Science and Engineering Papers [3122]
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