Hydraulic power capacity of the water distribution network (WDN) is analyzed, and energetically maximum flows in pipes and networks are determined. The concept of hydraulic power for the analysis of WDN characteristics is presented. Hydraulic power capacity characterizes the WDN capacity to meet pressure and flow demands. A capacity reliability indicator called the surplus power factor is introduced for individual transmission pipes and for distribution networks. The surplus power factor s that characterizes the reliability of the hydraulic system can be used along with other measures developed to quantify the hydraulic reliability of water networks. The coefficient of the hydraulic efficiency ηn of the network is defined. A water distribution system in service is analyzed to demonstrate the s and ηn values in the water network in service under different demand conditions. In order to calculate the s factor for WDNs, a network resistance coefficient C was determined. The coefficient C characterizes overall head losses in water pipelines and is a basis for the s factor calculation. This paper presents a theoretical approach to determine the coefficient C through matrix equations.
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Research Article|
November 13 2013
Capacity reliability of water distribution systems
J. Vaabel;
1Department of Mechanics, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
E-mail: [email protected]
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T. Koppel;
T. Koppel
1Department of Mechanics, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
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L. Ainola;
L. Ainola
2Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
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L. Sarv
L. Sarv
3Department of Information Technology, Estonian Business School, 10114 Tallinn, Estonia
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Journal of Hydroinformatics (2014) 16 (3): 731–741.
Article history
Received:
April 09 2013
Accepted:
September 21 2013
Citation
J. Vaabel, T. Koppel, L. Ainola, L. Sarv; Capacity reliability of water distribution systems. Journal of Hydroinformatics 1 May 2014; 16 (3): 731–741. doi: https://doi.org/10.2166/hydro.2013.040
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