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research
Multiobjective optimization of water distribution systems accounting for economic cost, hydraulic reliability, and greenhouse gas emissions
Authors
Angus R. Simpson
Atiquzzaman
+36 more
Das
Deb
Duan
Farmani
Fearnside
Filion
Fu
Fu
Giustolisi
Halhal
Holger R. Maier
Ilich
Jayaram
Kapelan
Keedwell
Khu
Li
Nitivattananon
Ormsbee
Pezeshk
Prasad
Savic
Schneiter
Simpson
Todini
Tolson
Ulanicki
Walski
Water Services Association of Australia
Wenyan Wu
Wu
Wu
Wu
Wu
Wu
Zyl
Publication date
1 January 2013
Publisher
'Wiley'
Doi
Cite
Abstract
In this paper, three objectives are considered for the optimization of water distribution systems (WDSs): the traditional objectives of minimizing economic cost and maximizing hydraulic reliability and the recently proposed objective of minimizing greenhouse gas (GHG) emissions. It is particularly important to include the GHG minimization objective for WDSs involving pumping into storages or water transmission systems (WTSs), as these systems are the main contributors of GHG emissions in the water industry. In order to better understand the nature of tradeoffs among these three objectives, the shape of the solution space and the location of the Pareto-optimal front in the solution space are investigated for WTSs and WDSs that include pumping into storages, and the implications of the interaction between the three objectives are explored from a practical design perspective. Through three case studies, it is found that the solution space is a U-shaped curve rather than a surface, as the tradeoffs among the three objectives are dominated by the hydraulic reliability objective. The Pareto-optimal front of real-world systems is often located at the "elbow" section and lower "arm" of the solution space (i.e., the U-shaped curve), indicating that it is more economic to increase the hydraulic reliability of these systems by increasing pipe capacity (i.e., pipe diameter) compared to increasing pumping power. Solutions having the same GHG emission level but different cost-reliability tradeoffs often exist. Therefore, the final decision needs to be made in conjunction with expert knowledge and the specific budget and reliability requirements of the system. © 2013. American Geophysical Union. All Rights Reserved.Wenyan Wu, Holger R. Maier, and Angus R. Simpso
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info:doi/10.1002%2Fwrcr.20120
Last time updated on 16/02/2019
Adelaide Research & Scholarship
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Last time updated on 24/09/2013