Estimation of the characteristic curves of pumped systems working as turbines through their curves operating as pump ; Estimación de las curvas características de operación de sistemas de impulsión operando como turbinas a partir de su curva motriz trabajando como bomba
15 26 22 1 ; SWORD Lewinsky-Keslitz H-P. 1987. Pumpen als Turbinen fur Kleinkraftwerke. Wasserwirtschaft, 77(10), 531-537. Schmiedl, E. 1988. Serien-Kreiselpumpen im Turbinenbetrieb, Pumpentagung Karlsruhe. A6. ; Bombas Ideal, 2017. Catálogo Comercial. http://www.bombasideal.com/ Carvalho, N. 2012. Bombas de fluxo operando como turbina. Por que usá- las? Seção de Artigos Técnicos. PCH Notícias & SPH News. Disponible en: http://cerpch.unifei.edu.br/wp-content/uploads/revistas/revista-12.pdf [Último acceso: enero de 2018]. ; [EN] The current research presents a methodology to select pump working as turbines (PAT) in recovery system in water distribution networks using their pump characteristic curve. The methodology is based on the review of the empirical methods that are currently proposed and enables the empiric estimation the operating point of the energy converter. The methodology determines the analysis of the operation point (flow, recovered head and efficiency) both constant and variable flows over time. When the flow changes, the methodology uses experiments curves that are based on characteristic parameters (discharge and head number). This proposal was applied on case study that is located in Callosa d'en Sarrià (Alicante). In the analyzed case, the recovered energy was 76884.71 kWh/year, representing 74.2% of the current energy that is dissipated by the pressure reduction valve. Alatorre-Frenk, C., Thomas, T.H. 1990. The pumps-as-turbines approach to small hydropower. World Congress on Renewable Energy, Proceedings of the 1st World Renewable Energy Congress. Pergamon Press, 5, 2914-8. Cabrera, E., Cobacho, R., Soriano, J. 2014. Towards an Energy Labelling of Pressurized Water Networks. Procedia Engineering, 70, 209-217. https://doi.org/10.1016/j.proeng.2014.02.024 Choulot, A. 2010. Energy recovery in existing infrastructures with small hydropower plants. FP6 Project Shapes (work package 5- WP5), European Directorate for Transport and Energy. Hancock, J.W. 1963. Centrifugal pump or water turbine. ...