Optimal energy-water management in urban residential buildings through grey water recycling

dc.contributor.authorWanjiru, Evan M.
dc.contributor.authorXia, Xiaohua
dc.date.accessioned2017-06-28T04:59:38Z
dc.date.issued2017-07
dc.description.abstractEnergy and water are inseparable resources whose management in urban residential buildings is important. Continuing urbanization in developing nations is increasing the demand yet the supply is inadequate or non-existent. Decentralized urban water recycling systems are an alternative source of water that could relieve the demand from public utilities. However, there are social, economic, environmental and technological factors that affect the uptake of these systems. Although advanced water treatment technologies for decentralized systems have been developed, there are challenges in their optimal operation. This paper introduces the open loop optimal control and closed-loop model predictive control (MPC) strategies aimed at ensuring safe and reliable operation of a grey water recycling system at building level. Both controllers have shown their ability in efficiently operate the system leading to water conservation and energy cost savings. Each of these controllers has its strengths in terms of cost, ease of implementation and robustness and they should be adopted according to specific application. Their adoption can greatly improve energy and water security in urban households, reduce their demand and wastewater. Technology alone cannot solve resource insecurity, and therefore, appropriate policies, regulations, incentives and public awareness should be implemented to support such novel technologies.en_ZA
dc.description.departmentElectrical, Electronic and Computer Engineeringen_ZA
dc.description.embargo2018-07-30
dc.description.librarianhj2017en_ZA
dc.description.sponsorshipNational Hub for Energy Efficiency and Demand Side Management (EEDSM)en_ZA
dc.description.urihttp://www.elsevier.com/locate/scsen_ZA
dc.identifier.citationWanjiru, E.M. & Xia, X. 2017, 'Optimal energy-water management in urban residential buildings through grey water recycling', Sustainable Cities and Society, vol. 32, pp. 654-668.en_ZA
dc.identifier.issn2210-6707 (online)
dc.identifier.other10.1016/j.scs.2017.05.009
dc.identifier.urihttp://hdl.handle.net/2263/61132
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2017 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Sustainable Cities and Society. 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. A definitive version was subsequently published in Sustainable Cities and Society, vol. 32, pp. 654-668, 2017. doi : 10.1016/j.scs.2017.05.009.en_ZA
dc.subjectEnergy managementen_ZA
dc.subjectEnergy-water nexusen_ZA
dc.subjectGrey water recyclingen_ZA
dc.subjectOptimal controlen_ZA
dc.subjectUrban buildingsen_ZA
dc.subjectModel predictive control (MPC)en_ZA
dc.titleOptimal energy-water management in urban residential buildings through grey water recyclingen_ZA
dc.typePostprint Articleen_ZA

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