Heat exchanger network process modifications for controllability using design reliability theory

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dc.contributor.author Tellez, R en
dc.contributor.author Svrcek, WY en
dc.contributor.author Ross, TJ en
dc.contributor.author Young, Brent en
dc.date.accessioned 2011-11-30T19:10:11Z en
dc.date.issued 2006 en
dc.identifier.citation Computers & Chemical Engineering 30(4):730-743 2006 en
dc.identifier.issn 0098-1354 en
dc.identifier.uri http://hdl.handle.net/2292/9657 en
dc.description.abstract For a given heat exchanger network (HEN) it is often necessary to determine its behaviour to disturbances in supply temperature and/or inlet flow rate variations, that is its ability, flexibility or resiliency to meet the design requirements at new operating conditions. An analysis of the HEN resiliency is very useful to assess other design options and for the design of a robust control structure. The use of design reliability theory coupled with fuzzy design uncertainties can be used to determine the possibility of violating the HEN constraints. This measures the potential of the design failure rather than the frequency of failure, the latter being measured by probability theory. The HEN constraints considered in this work are the target temperatures, hot/cold utility flow rate and heat transfer area/overall coefficient (UA). If the design under consideration results in a significant value of the failure possibility for any of these constraints, then this HEN design will require either a modification of the design or the establishment of a specific requirement in the control system. The case study treated in this paper shows that design reliability theory is a useful tool for determining HEN constraint violations that will require special attention from a control point of view, that is controllability analysis. Thus, this approach has proven to be a useful tool for determining design changes and for developing a workable control scheme for HEN designs. en
dc.publisher Elsevier Ltd. en
dc.relation.ispartofseries Computers & Chemical Engineering en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0098-1354/ en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Heat exchanger network process modifications for controllability using design reliability theory en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.compchemeng.2005.12.002 en
pubs.issue 4 en
pubs.begin-page 730 en
pubs.volume 30 en
dc.rights.holder Copyright: Elsevier Ltd. en
pubs.end-page 743 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 58240 en
pubs.org-id Engineering en
pubs.org-id Chemical and Materials Eng en
pubs.record-created-at-source-date 2010-09-01 en

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