Practical head-outflow relationship definition methodology that accounts for varied water-supply methods

Dong Eil Chang, Do Guen Yoo, Joong Hoon Kim

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number4755
JournalSustainability (Switzerland)
Volume12
Issue number11
DOIs
Publication statusPublished - 2020 Jun 1

Keywords

  • Demand-driven analysis
  • Head-outflow relationship
  • Pressure-driven analysis
  • Secondary water-pipe network
  • Water supply

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Management, Monitoring, Policy and Law

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