Model performance indicator of aging pipes in a domestic water supply distribution network

Norzaura Abd Rahman, Nur Shazwani Muhammad, Jazuri Abdullah, Wan Hanna Melini Wan Mohtar

Research output: Contribution to journalArticle

Abstract

Aging pipes in the domestic water distribution network have the potential to decrease the quality and quantity of the treated water supplied to the consumers. Therefore, a calibrated water distribution model is helpful to monitor and understand the behaviour of a real water distribution network. However, a comprehensive performance indicator and an integrated method to assess the efficiency of model performance have not been well established in the literature. This study developed a methodology for a model calibration exercise, with consideration of two uncertainty parameters, i.e., Hazen-Williams roughness coefficient of the pipes and Non-Revenue Water (NRW) in each nodal demand. Following this, a statistical color-coded performance indicator was established, based on the Nash-Sutcliffe Efficiency Coefficient (NSEC), the coefficient of determination (R2), the correlation coefficient (r), and the Mean Absolute Error (MAE). The accuracy of the calibrated model was measured by Discrepancy Ratio (DR) analysis. This study concluded that the model performed well when NRWwas added to the nodal demand in zone(s) with suspected water loss activities. The suggested Hazen-Williams roughness coefficient for PVC pipes was between 130 and 140 for pipes aged more than 20 years. The threshold error value to determine the accuracy of the simulated model was proposed to be between -0.05 and 0.05.

Original languageEnglish
Article number2378
JournalWater (Switzerland)
Volume11
Issue number11
DOIs
Publication statusPublished - 1 Nov 2019

Fingerprint

Water Supply
water distribution
pipes
Water supply
Electric power distribution
water management
pipe
Aging of materials
water supply
Pipe
water
Water
performance
roughness
Surface roughness
parameter uncertainty
efficiency
demand
Polyvinyl Chloride
Calibration

Keywords

  • Aging pipes
  • EPANET
  • Model accuracy
  • Non-revenue water
  • Performance indicator
  • Water distribution network

ASJC Scopus subject areas

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

Cite this

Model performance indicator of aging pipes in a domestic water supply distribution network. / Rahman, Norzaura Abd; Muhammad, Nur Shazwani; Abdullah, Jazuri; Mohtar, Wan Hanna Melini Wan.

In: Water (Switzerland), Vol. 11, No. 11, 2378, 01.11.2019.

Research output: Contribution to journalArticle

Rahman, Norzaura Abd ; Muhammad, Nur Shazwani ; Abdullah, Jazuri ; Mohtar, Wan Hanna Melini Wan. / Model performance indicator of aging pipes in a domestic water supply distribution network. In: Water (Switzerland). 2019 ; Vol. 11, No. 11.
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