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    Floating pinch method for utility targeting in heat exchanger network (HEN)

    Access Status
    Fulltext not available
    Authors
    Tan, Yin Ling
    Ng, D.
    El-Halwagi, M.
    Foo, D.
    Samyudia, Yudi
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Tan, Y.L. and Ng, D. and El-Halwagi, M. and Foo, D. and Samyudia, Y. 2014. Floating pinch method for utility targeting in heat exchanger network (HEN). Chemical Engineering Research and Design. 92: pp. 119-126.
    Source Title
    Chemical Engineering Research and Design
    DOI
    10.1016/j.cherd.2013.06.029
    ISSN
    0263-8762
    School
    Curtin Sarawak
    URI
    http://hdl.handle.net/20.500.11937/32019
    Collection
    • Curtin Research Publications
    Abstract

    Most of the established methods for utility targeting in a heat exchanger network (HEN) are mainly focusing on fixed stream conditions, where the flow rate, heat capacity, supply and target temperatures are fixed. However, in the process industries, the stream conditions (flow rates and temperatures) are not fixed. Therefore, the established HEN targeting methods cannot be directly applied to locate the hot and cold utility targets for HEN problem with varying flow rates and temperatures. To address this issue, a revised floating pinch method which uses binary variables to parameterise the stream locations on the composite curves, is presented in this work to identify the minimum utilities targets. The revised method simplify the earlier version of floating pinch method presented by Duran and Grossmann (1986) by avoiding the non-differentiability in the mathematical program. Two cases, one with fixed parameters while another with temperature-dependent properties and varying operating parameters are solved to illustrate the revised model.

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