Abstract
A simple methodology for PAT selection starting from the performance of the pump in direct mode is given, based on a number of studies on PAT behavior present in expert literature. The expected errors in terms of head and PAT efficiency between the results of this methodology and the experimental data are also discussed, and the possibility of introducing correction factors based on the internal pump geometry is considered. The reader will be introduced to the design procedure of the PAT in small hydropower plants. In particular, simple methods for the selection of the pump to be used in inverse mode and on the modification of the PAT impeller geometry will be presented, together with the speed necessary to obtain the match between the required design parameters and the PAT working conditions.
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References
S.-S. Yang, S. Derakhshan, F.-Y. Kong, Theoretical, numerical and experimental prediction of pump as turbine performance. Renew. Energy 48, 507–513 (2012)
D. Novara, S. Derakhshan, A. McNabola, H. Ramos, Estimation of unit cost and maximum efficiency for Pumps as Turbines, in Young Water Professionals (2017)
D. Novara, A. Carravetta, S. Derakhshan, A. McNabola, H. Ramos, A cost model for pumps as turbines and a comparison of design strategies for their use as energy recovery devices in Water Supply Systems, in EEMODS’17, Rome (eemods17.org), Energy Efficiency in Motor Driven Systems (2017)
D. Novara, A. Carravetta, S. Derakhshan, A.M. Nabola, H. Ramos, Centrifugal pumps as turbines cost determination and feasibility study for pressure reducing valve substitution in a water supply system, Submitt. to Renew. Energy (2017)
J.M. Chapallaz, P. Eichenberger, G. Fischer, in A Manual on Pumps Used as Turbines (Vieweg, 1992)
S. Derakhshan, A. Nourbakhsh, Experimental study of characteristic curves of centrifugal pumps working as turbines in different specific speeds. Exp. Therm. Fluid Sci. 32(3), 800–807 (2008)
H. Ramos, A. Borga, Pumps as turbines: an unconventional solution to energy production. Urban Water 1(3), 261–263 (1999)
H. Ramos, A. Borga, M. Simão, New design solutions for low-power energy production in water pipe systems. Water Sci. Eng. 2(4), 69–84 (2009)
H. Ramos, D. Covas, L. Araujo, M. Mello, Available energy assessment in water supply systems, in XXXI IAHR Congress (2005), pp. 11–16
H. Ramos, M. Mello, P.K. De, Clean power in water supply systems as a sustainable solution: from planning to practical implementation. Water Sci. Technol. Water Supply 10(1), 39–49 (2010)
P. Singh, Optimization of internal hydraulics and of system design for pumps as turbines with field implementation and evaluation, Universität Karlsruhe (TH) Diss. InstitutfürWasserwirtschaft und Kulturtechnik (2005)
A. Carravetta, G. del Giudice, O. Fecarotta, H. Ramos, PAT design strategy for energy recovery in water distribution networks by electrical regulation. Energies 6(1), 411–424 (2013)
A. Carravetta, O. Fecarotta, R. Martino, L. Antipodi, PAT efficiency variation with design parameters. Procedia Eng. 70, 285–291 (2014)
H. Nautiyal, V. Varun, A. Kumar, Experimental investigation of centrifugal pump working as turbine for small hydropower systems. Energy Sci. Technol. 1(1), 79–86 (2011)
A. Carravetta, L. Antipodi, U. Golia, O. Fecarotta, Energy saving in a water supply network by coupling a pump and a pump as turbine (PAT) in a turbopump. Water 9(1), 62 (2017)
S.-S. Yang, F.-Y. Kong, W.-M. Jiang, X.-Y. Qu, Effects of impeller trimming influencing pump as turbine. Comput. Fluids 67, 72–78 (2012)
O. Fecarotta, A. Carravetta, H. Ramos, R. Martino, An improved affinity model to enhance variable operating strategy for pumps used as turbines. J. Hydraul. Res. 54(3), 332–341 (2016)
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Carravetta, A., Derakhshan Houreh, S., Ramos, H.M. (2018). PAT Selection. In: Pumps as Turbines. Springer Tracts in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-67507-7_4
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DOI: https://doi.org/10.1007/978-3-319-67507-7_4
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