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Water 2017, 9(1), 62;

Energy Saving in a Water Supply Network by Coupling a Pump and a Pump As Turbine (PAT) in a Turbopump

Department of Civil, Structure and Environmental Engineering, Università di Napoli Federico II, via Claudio, 21, 80125 Napoli, Italy
Caprari s.p.a., Via Emilia Ovest, 900, 41123 Modena, Italy
Department of Civil Engineering, Industrial Design, Environment and History, Second University of Naples, Real Casa dell’Annunziata, Via Roma, 9, 81031 Aversa, Italy
Author to whom correspondence should be addressed.
Academic Editors: Helena Ramos and Arjen Y. Hoekstra
Received: 28 October 2016 / Revised: 22 December 2016 / Accepted: 9 January 2017 / Published: 20 January 2017
(This article belongs to the Special Issue Water Systems towards New Future Challenges)
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The management of a water distribution network (WDN) is performed by valve and pump control, to regulate both the pressure and the discharge between certain limits. The energy that is usually merely dissipated by valves can instead be converted and used to partially supply the pumping stations. Pumps used as turbines (PAT) can be used in order to both reduce pressure and recover energy, with proven economic benefits. The direct coupling of the PAT shaft with the pump shaft in a PAT-pump turbocharger (P&P plant) allows us to transfer energy from the pressure control system to the pumping system without any electrical device. Based on experimental PAT and pump performance curves, P&P equations are given and P&P working conditions are simulated with reference to the operating conditions of a real water supply network. The annual energy saving demonstrates the economic relevance of the P&P plant. View Full-Text
Keywords: energy saving; Pump As Turbine (PAT); PAT and pump system (P&P); energy recovery; pumping energy saving; Pump As Turbine (PAT); PAT and pump system (P&P); energy recovery; pumping

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Carravetta, A.; Antipodi, L.; Golia, U.; Fecarotta, O. Energy Saving in a Water Supply Network by Coupling a Pump and a Pump As Turbine (PAT) in a Turbopump. Water 2017, 9, 62.

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