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http://dx.doi.org/10.3741/JKWRA.2017.50.12.803

Sensitivity analysis of pump and tank sizes on water network operation and water age  

Kim, Kangmin (Department of Civil Engineering, Kyung Hee University)
Choi, Jeongwook (Department of Civil Engineering, Kyung Hee University)
Jung, Donghwi (Research Center for Disaster Prevention Science and Technology, Korea University)
Kang, Doosun (Department of Civil Engineering, Kyung Hee University)
Publication Information
Journal of Korea Water Resources Association / v.50, no.12, 2017 , pp. 803-813 More about this Journal
Abstract
Recently, various studies have been conducted to optimize the pump operation scheduling and/or the pump/tank size minimizing the system cost of water distribution network. Prior to that, it is important to understand the sensitivity of pump/tank size on the system cost and overall water quality. Here, we have performed the sensitivity analysis to investigate the effect of pump/tank size on the economic cost (construction and operation) and water quality (water age). The analysis was applied on a real, large-scale water transmission network currently operating in South Korea. The results revealed that the pump/tank size has a strong influence on system construction/operation costs. Especially, the tank size has a significant effect on the system-wide water quality. In the case of applied networks, the operating cost decreases as the capacity of the facility increases, but the design cost increases. Using a sensitivity analysis, a suitable range of pump/tank size could be suggested to minimize costs and stabilize the water quality at the same time prior to a system design.
Keywords
Cost analysis; Pump and tank capacity; Sensitivity analysis; Water age; Water distribution system;
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