Energy Recovery in Pressurized Hydraulic Networks

Rodríguez-Pérez, Ángel Mariano; Pérez-Calañas, Cinta; Pulido‐Calvo, Inmaculada

doi:10.1007/s11269-021-02824-4

Cited by 13 publications

(2 citation statements)

References 20 publications

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“…The results obtained can be extrapolated to any other municipality with similar topographic conditions and including a difference in height between water deposits (principal and train reservoirs) to make the scheduled daily distribution of water possible. This is a very common scenario not only in our specific region (south of Spain, Europe) [57] but in any place where regular mountain ranges and rivers are found nearby municipalities.…”

Section: Methodsmentioning

confidence: 84%

Experimental Outdoor Public Lighting Installation Powered by a Hydraulic Turbine Installed in the Municipal Water Supply Network

Ocana-Miguel

Calderón

Díaz

2022

Water

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Sustainability and energy prices make the use of energy obtained from renewable sources on an urban scale and for isolated local facilities necessary for municipal authorities. Moreover, when the demand of energy is at night, as for street lighting installations, the use of accumulative systems is necessary, which means a major drawback due to a short lifetime expectancy and high cost. The use of batteries can require more than 70% of the budget of these lighting systems and has a critical impact in the project. The problem to solve is finding different renewable energy sources that can produce energy throughout the day, especially during the night, at the same time at which it is consumed. As one of the competences of municipal authorities is water supply networks, this paper analyzes the use of energy recovery turbines within these installations as an alternative to photovoltaic generators. To study the viability and effectiveness of this alternative, the water flows available in the network of a medium-size municipality were monitored and analyzed in depth to assess the amount of recoverable energy. In addition, an energy recovery turbine (ERT) station was set up, installing a bypass around one of the pressure-reducing valves (PRV) of the installation where energy is dissipated without practical use. The results obtained imply that the system proposed has economical and technical viability, is reliable and guarantees full service in all the seasons’ conditions. Moreover, the needs of the energy storage capacity are much lower (~8%) than with solar panels.

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Section: Methodsmentioning

confidence: 84%

Experimental Outdoor Public Lighting Installation Powered by a Hydraulic Turbine Installed in the Municipal Water Supply Network

Ocana-Miguel

Calderón

Díaz

2022

Water

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“…Reduction of leaks, decreasing the pressure in water supply systems and increasing the efficiency [12][13][14][15][16][17][18][19][20] Proposal to use adapted machines (PATs and tubular propeller) in water supply systems to reduce the pressure [21][22][23][24] Description and operation of a PAT with a review of available technologies [25][26][27][28][29][30] Performance and modeling of a PAT [26,[31][32][33][34][35][36][37][38] Installation of energy recovery systems or devices in water supply networks [1,4,9,11,15,17,[39][40][41][42][43][44][45][46][47][48][49][50][51] Implementation of simulations to determine the theoretical recovered energy in water supply and irrigation systems…”

Section: Researched Topic Referencesmentioning

confidence: 99%

Optimizing Conduit Hydropower Potential by Determining Pareto-Optimal Trade-Off Curve

et al. 2022

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In numerous locations of bulk water supply/distribution systems, energy is dissipated by pressure-reducing devices, whereas it could be recovered by means of turbines or pumps as turbines. These pipe systems, owned and operated by municipalities, water utilities, large water-consuming industries, and mines, could be used as a source of renewable sustainable energy. However, the exploitation of these systems presents several issues related to the complexity of the operational optimization of the hydropower generation facilities and to the potential negative impact on the reliability of the system itself. We have developed a novel procedure to optimize the energy generation in such a conduit system by assessing the interrelationship of storage volumes, demand patterns, operating cycles, and electricity tariff structures. The procedure is a multi-objective genetic algorithm designed to provide a solution to maximize electricity generation and thus revenue and to minimize the risk involved in supplying the demand. A Pareto-optimal trade-off curve is set up, indicating the potential benefit (revenue) versus the reliability index (supply security). The results indicate that a Pareto-optimal trade-off curve was generated from which a solution could be selected which would improve the weekly revenue by up to 7.5%, while still providing a reliable water supply system.

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