Practical Head-Outflow Relationship Definition Methodology That Accounts for Varied Water-Supply Methods

Dong Eil Chang, Do Guen Yoo and Joong Hoon Kim
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Dong Eil Chang: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea
Do Guen Yoo: Department of Civil Environmental Engineering, The University of Suwon, Gyeonggi-do 18323, Korea
Joong Hoon Kim: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea

Sustainability, 2020, vol. 12, issue 11, 1-18

Abstract: Achieving reliable pressure-driven analysis (PDA) results that account for anomalies within water-pipe networks requires a head-outflow relationship (HOR) model that can calculate supply flow rate according to the supply pressure at each node. Many studies have suggested HOR models, but a methodology to define HORs that considers the actual residential environment of users and differing water-supply methods for residential buildings has not yet been proposed. This study considered water-use data from buildings and actual differences in residential environments in a surveyed area (including building heights, topography, and water systems within buildings) and water-supply methods (indirect/direct water supply, existence of a pump within buildings) to develop a methodology and derive a representative HOR for the target area for PDA. Further, a representative HOR was determined for each block by applying the developed methodology for two blocks with similar residential environments but different water-use patterns. It confirmed that the HOR induced through this process could provide high water-supply performance despite a low supply head and needed to reflect the diversity of the water-supply method. The proposed HOR-definition methodology can be easily applied in water-pipe network design and operation processes and ensure objectivity and rationality of HOR selection to yield reliable PDA results.

Keywords: pressure-driven analysis; demand-driven analysis; head-outflow relationship; secondary water-pipe network; water supply (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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