Energy reduction for a dual circuit cooling water system using advanced regulatory control

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dc.contributor.author Muller, C.J. (Cornelius Jacobus)
dc.contributor.author Craig, Ian K.
dc.date.accessioned 2016-05-06T08:11:07Z
dc.date.issued 2016-06
dc.description.abstract Various process utilities are used in the petrochemical industry as auxiliary variables to facilitate the addition/removal of energy to/from the process, power process equipment and inhibit unwanted reaction. Optimisation activities usually focus on the process itself or on the utility consumption though the generation and distribution of these utilities are often overlooked in this regard. Many utilities are prepared or generated far from the process plant and have to be transported or transmitted, giving rise to more losses and potential inefficiencies. To illustrate the potential benefit of utility optimisation, this paper explores the control of a dual circuit cooling water system with focus on energy reduction subject process constraints. This is accomplished through the development of an advanced regulatory control (ARC) and switching strategy which does not require the development of a system model, only rudimentary knowledge of the behaviour of the process and system constraints. The novelty of this manuscript lies in the fact that it demonstrates that significant energy savings can be obtained by applying ARC to a process utility containing both discrete and continuous dynamics. Furthermore, the proposed ARC strategy does not require a plant model, uses only existing plant equipment, and can be implemented on control system hardware commonly used in industry. The simulation results indicate energy saving potential in the region of 30% on the system under investigation. en_ZA
dc.description.department Electrical, Electronic and Computer Engineering en_ZA
dc.description.embargo 2017-06-30
dc.description.librarian hb2016 en_ZA
dc.description.uri http://www.elsevier.com/locate/apenergy en_ZA
dc.identifier.citation Muller, CJ & Craig, IK 2016, 'Energy reduction for a dual circuit cooling water system using advanced regulatory control', Applied Energy, vol. 171, pp. 287-295. en_ZA
dc.identifier.issn 0306-2619 (print)
dc.identifier.issn 1872-9118 (online)
dc.identifier.other 10.1016/j.apenergy.2016.03.069
dc.identifier.uri http://hdl.handle.net/2263/52502
dc.language.iso en en_ZA
dc.publisher Elsevier en_ZA
dc.rights © 2016 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Applied Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Energy, vol. 171, pp. 287-295, 2016. doi :10.1016/j.apenergy.2016.03.069. en_ZA
dc.subject Utility en_ZA
dc.subject Optimisation en_ZA
dc.subject Control en_ZA
dc.subject Energy en_ZA
dc.subject Advanced regulatory control (ARC) en_ZA
dc.title Energy reduction for a dual circuit cooling water system using advanced regulatory control en_ZA
dc.type Postprint Article en_ZA


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