Application of intensified heat transfer for the retrofit of heat exchanger network

Yufei Wang, Ming Pan, Igor Bulatov, Robin Smith, Jin Kuk Kim

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

A number of design methods have been proposed for the retrofit of heat exchanger networks (HEN) during the last three decades. Although considerable potential for energy savings can be identified from conventional retrofit approaches, the proposed solutions have rarely been adopted in practice, due to significant topology modifications required and resulting engineering complexities during implementation. The intensification of heat transfer for conventional shell-and-tube heat exchangers can eliminate the difficulties of implementing retrofit in HEN which are commonly restricted by topology, safety and maintenance constraints, and includes high capital costs for replacing equipment and pipelines. This paper presents a novel design approach to solve HEN retrofit problems based on heat transfer enhancement. A mathematical model has been developed to evaluate shell-and-tube heat exchanger performances, with which heat-transfer coefficients and pressure drops for both fluids in tube and shell sides are obtained. The developed models have been compared with the Bell-Delaware, simplified Tinker and Wills-Johnston methods and tested with the HTRI® and HEXTRAN® software packages. This demonstrates that the new model is much simpler but can give reliable results in most cases. For the debottlenecking of HEN, four heuristic rules are proposed to identify the most appropriate heat exchangers requiring heat transfer enhancements in the HEN. The application of this new design approach allows a significant improvement in energy recovery without fundamental structural modifications to the network.

Original languageEnglish
Pages (from-to)45-59
Number of pages15
JournalApplied Energy
Volume89
Issue number1
DOIs
StatePublished - 2012 Jan

Fingerprint

Heat exchangers
heat transfer
Heat transfer
shell
topology
Tubes (components)
design method
pressure drop
heuristics
Topology
safety
software
engineering
Software packages
Heat transfer coefficients
Pressure drop
fluid
Energy conservation
Pipelines
cost

Keywords

  • Heat exchanger model
  • Heat exchanger network (HEN)
  • Heat transfer enhancement (HTE)
  • Heuristics
  • Retrofit

Cite this

Wang, Yufei ; Pan, Ming ; Bulatov, Igor ; Smith, Robin ; Kim, Jin Kuk. / Application of intensified heat transfer for the retrofit of heat exchanger network. In: Applied Energy. 2012 ; Vol. 89, No. 1. pp. 45-59.
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Application of intensified heat transfer for the retrofit of heat exchanger network. / Wang, Yufei; Pan, Ming; Bulatov, Igor; Smith, Robin; Kim, Jin Kuk.

In: Applied Energy, Vol. 89, No. 1, 01.2012, p. 45-59.

Research output: Contribution to journalArticle

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