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Hydraulic Ram Pump Integration into Water Distribution Systems for Energy Recovery Application

Faculty of Civil and Environmental Engineering, Technion–Israel Institute of Technology, Haifa 32000, Israel
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Academic Editor: Mauro De Marchis
Water 2022, 14(1), 21; https://doi.org/10.3390/w14010021
Received: 1 November 2021 / Revised: 17 December 2021 / Accepted: 20 December 2021 / Published: 22 December 2021
(This article belongs to the Section Urban Water Management)
This study presents the potential of integrating Hydrams in modern water distribution systems (WDSs) for managing excess pressure and reducing energy costs. Hydrams, which are also termed Hydraulic ram pumps in the literature, is a cyclic water pump powered by hydropower, generally used to pump drinking and irrigation water in mountainous and rural areas having short of power. The Hydrams is introduced as a sustainable low-cost alternative solution to the more conventional pressure reducing valves (PRVs) approach for managing pressure zones in WDSs. Unlike PRVs, where the pressure is lost and not put into good use, Hydrams mitigate excess pressure at high-pressure zones and direct it to much-needed low-pressure zones. In addition, Hydrams are cheap, simple, environmentally friendly, and require little maintenance. The proposed approach integrates a Hydram in parallel to the original centrifugal pump, where they can be operated interchangeably according to the system’s hydraulic needs. Nevertheless, it is vital to correctly size the Hydram at the feed line and accompany it with a proper storage tank at the low-pressure zone. The storage tank serves as a buffer between the intermittent water supply and consumer demand pattern. Moreover, the tank introduces flexibility into the system that allows more sustainable operating schedules. Two case study applications of increasing complexity are presented to demonstrate the potential of this Hybrid system, later referred to as Hybrid Pumping Unit (HPU). The Hydram and tank sizing is done by a simple heuristic approach, while the operation of the system is dictated by a genetic algorithm. The results demonstrate the potential of integrated Hydrams in reducing excess pressures and energy costs. View Full-Text
Keywords: ram pump; hydram; energy recovery ram pump; hydram; energy recovery
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MDPI and ACS Style

Zeidan, M.; Ostfeld, A. Hydraulic Ram Pump Integration into Water Distribution Systems for Energy Recovery Application. Water 2022, 14, 21. https://doi.org/10.3390/w14010021

AMA Style

Zeidan M, Ostfeld A. Hydraulic Ram Pump Integration into Water Distribution Systems for Energy Recovery Application. Water. 2022; 14(1):21. https://doi.org/10.3390/w14010021

Chicago/Turabian Style

Zeidan, Mohamad, and Avi Ostfeld. 2022. "Hydraulic Ram Pump Integration into Water Distribution Systems for Energy Recovery Application" Water 14, no. 1: 21. https://doi.org/10.3390/w14010021

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