Energy Cost Optimization for Water Distribution Networks Using Demand Pattern and Storage Facilities

Yungyu Chang, Gyewoon Choi, Juhwan Kim and Seongjoon Byeon
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Yungyu Chang: Seohae Environmental Science Institute, Jeonbuk 54817, Korea
Gyewoon Choi: Department of Civil and Environmental Engineering, Incheon National University, Incheon 22012, Korea
Juhwan Kim: K-Water Institute, Water Research Center, Daejeon 34045, Korea
Seongjoon Byeon: International Center for Urban Water Hydroinformatics Research & Innovation, Incheon 21999, Korea

Sustainability, 2018, vol. 10, issue 4, 1-19

Abstract: Energy consumption in water supply systems is closely connected with the demand for water, since energy is mostly consumed in the process of water transport and distribution, in addition to the energy that might be needed to pump the water from its sources. Existing studies have been carried out on optimizing the pump operations to attain appropriate pressure and on controlling the water level of storage facilities to transfer the required demand and to reduce the energy cost. The idea is to reduce the amount of the water being supplied when the unit price of energy is high and to increase the supply when the unit price is low. To realize this scheme, the energy consumption of water supply systems, the amount of water transfer, the organization of energy cost structure, the utilization of water tanks, and so forth are investigated and analyzed to establish a model of optimized water demand management based on the application of water tanks in supplied areas. In this study, with the assumption that energy cost can be reduced by the redistribution of a demand pattern, a numerical analysis is conducted on transferring water demand at storage facilities from the peak energy cost hours to the lower energy cost hours. This study was applied at the Bupyeong 2 reservoir catchment, Incheon, Korea.

Keywords: energy costs; genetic algorithms; water pipe network analysis; water storage facilities; demand pattern optimization; water distribution systems (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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