Resumo

VILARINO, José Luis Amador; MARTINEZ RODRIGUEZ, José Bienvenido  e  BROWN MANRIQUE, Oscar. New focus for the energy-economic analysis in the selection of the pressurized pipes. Rev. cienc. tecnol. [online]. 2020, n.33, pp.1-10. ISSN 1851-7587.

The research was carried out in three hydraulic projects: the pumping station of Maximum dam, Camagüey Water treatment and the Pontezuela dam. The obtained results demonstrated that the proposed method for pipes design resulted on a power pumps decrease, cost operation reduction to 30,2% and 29,2% respectively and time amortization average within 6,51 year- time. The cheapest speed values were among 0,52 m s^-1 to 0,79 m s^-1 with an average of 0,66 m s^-1. The hydraulic conductor designs with the necessary diameter reduction to reach the required pressure in pump discharge, generate higher losses in almost twice the times the needed power in the electric pump motors because it constitutes a case of strangling of the current. So, if this variant is necessary, a valve should be used in order to relatively reduce the losses.

Palavras-chave : Speed design; Economic diameter; Charge losses; Energy..

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