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Energies 2017, 10(1), 103;

A Performance Prediction Method for Pumps as Turbines (PAT) Using a Computational Fluid Dynamics (CFD) Modeling Approach

Department of Industrial Engineering, University of Naples Federico II, Via Claudio, 21-80125 Naples, Italy
Author to whom correspondence should be addressed.
Academic Editor: Bjørn H. Hjertager
Received: 18 October 2016 / Revised: 20 December 2016 / Accepted: 6 January 2017 / Published: 16 January 2017
(This article belongs to the Special Issue Engineering Fluid Dynamics)
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Small and micro hydropower systems represent an attractive solution for generating electricity at low cost and with low environmental impact. The pump-as-turbine (PAT) approach has promise in this application due to its low purchase and maintenance costs. In this paper, a new method to predict the inverse characteristic of industrial centrifugal pumps is presented. This method is based on results of simulations performed with commercial three-dimensional Computational Fluid Dynamics (CFD) software. Model results have been first validated in pumping mode using data supplied by pump manufacturers. Then, the results have been compared to experimental data for a pump running in reverse. Experimentation has been performed on a dedicated test bench installed in the Department of Civil Construction and Environmental Engineering of the University of Naples Federico II. Three different pumps, with different specific speeds, have been analyzed. Using the model results, the inverse characteristic and the best efficiency point have been evaluated. Finally, results have been compared to prediction methods available in the literature. View Full-Text
Keywords: energy saving; PAT; urban hydraulic network; numerical modeling energy saving; PAT; urban hydraulic network; numerical modeling

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Frosina, E.; Buono, D.; Senatore, A. A Performance Prediction Method for Pumps as Turbines (PAT) Using a Computational Fluid Dynamics (CFD) Modeling Approach. Energies 2017, 10, 103.

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