Mass, Energy, and Cost Balances in Water Distribution Systems with PATs: The Trondheim Network Case Study
Publication: Journal of Water Resources Planning and Management
Volume 146, Issue 5
Abstract
In water distribution systems, the substitution of regulating valves by pumps as turbines (PATs) is sustainable if the energy recovery balances the installation and maintenance costs, with a comparable and efficient reduction of the volume lost by leakage. Hence, the installation feasibility and regulation of a PAT require analysis of the introduced effects on the components of the energy, mass, and cost balances. In this paper these effects are explored by means of a case study, i.e., the water distribution system of Trondheim, Norway. Different hydraulic regulations of a PAT are analyzed to maximize the recovered energy, considering the daily variation of the system functioning conditions and the substitution of valves of different kinds, meaning a constant opening degree, a fixed value of pressure at a node of the system, and a control in time of the setting. A feasible solution for the Trondheim network is shown, consisting of the implementation of two twin PATs in parallel with a discontinuous functioning of one of them.
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Data Availability Statement
Some data, models, or code generated or used during the study are proprietary or confidential in nature and may only be provided with restrictions.
Acknowledgments
This research has been funded by the University of Perugia, with the support of the Erasmus + programme of the European Union that provided the funds for the traineeship of Lorenzo Magenta at the Norwegian University of Science and Technology.
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Journal of Water Resources Planning and Management
Volume 146 • Issue 5 • May 2020
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©2020 American Society of Civil Engineers.
History
Received: Dec 7, 2018
Accepted: Nov 15, 2019
Published online: Mar 6, 2020
Published in print: May 1, 2020
Discussion open until: Aug 6, 2020
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