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Characterization of the behavior of pumps operating as turbines: numerical and experimental analysis





[EN] The increasing energy crisis and the excessive consumption of resources raise the concern to find new alternative sources of energy, enabling new production methods and / or making more efficient those that already exist. Taking into account the advantages that the microproduction of energy provides, it is intended to investigate the feasibility of excess energy consumption in water supply, drainage and irrigation systems through the use of microturbines such as pump as turbines (PAT). The characterization of PAT¿s behaviour was evaluated using an exhaustive set of experimental tests that includes a PAT operating in isolated mode and in parallel mode, and advanced numerical simulations using computational fluid dynamics (CFD) models. A set of characteristic curves flow vs. head and efficiency vs. head were obtained for different rotational speeds and operating modes.

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