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KMID : 1024520220310010033
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Journal of the Environmental Sciences
2022 Volume.31 No. 1 p.33 ~ p.42
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Hydraulic Analysis and Sizing of Inlet-Pipe Diameter for the Water Distribution Network
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Shin Sung-Kyo
Kim Eun-Ju
Choi Si-Hwan
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Abstract
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The objective of this study is to determine the appropriate size of the inlet pipe diameter and thereby conduct hydraulic analysis for the Korean water distribution network. To this end, the data tables for equivalent pipe diameters and outflow rates presently employed in Korea were adopted. By incorporating the table of equivalent pipe diameters, it was found that the size of the inlet pipe diameter was overestimated, which can cause shortage of water pressure and malfunctioning or insufficiency of outflow rate in the corresponding adjacent region. However, by conducting hydraulic analysis based on the table of outflow rates, relatively reasonable flow rates were observed. Furthermore, by comparing the real demand-driven analysis (RDDA) approach and demand-driven analysis (DDA) approach toward managing the huge water demand, it was observed that DDA could not effectively respond to real hourly usage conditions, whereas RDDA (which reflects the hourly effects of inlet pipe diameter and storage tanks) demonstrated results similar to that of real water supply.
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KEYWORD
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Water supply, Network analysis, Real demand, Pipe diameter
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