Pumps as Turbines (PATs) by Analysis with CFD Models

Frank Plua, Victor Hidalgo, Edgar Cando, Modesto Pérez-Sánchez, P.Amparo López-Jiménez

Abstract


Pumps as turbines (PATs) are the typical solution for electrification using micro hydropower plants (MHP) in the rural sector. Other engineering applications where lately the use of PATs have increased are irrigation, water supply, and energy recovery systems due to their availability, short delivery time, long service life, economic feasibility, construction, and maintenance advantages. However, selecting the suitable pump(s) is difficult because manufacturers only provide performance curves when operating in pump mode; therefore, there is no universal method to predict that issue. For this reason, theoretical, analytical, experimental, and numerical simulation research have been made to predict these curves and the PATs' performance. The present paper analyzes PATs with Computational Fluid Dynamics (CFD) based on advanced research. For this aim, information from a wide range of types of pumps with different rotation speeds was classified to examine case approaches, computational domains, mesh generation, boundary conditions, optimization of elements, and CFD package used to establish the effectiveness of this tool and to find characteristics which have not been enough investigated at present. Most studies used CFD simulations with ANSYS code and K-ï¥ turbulence closure model, which presented adequate results. Finally, this paper shows that numerical simulations with CFD analysis were successfully carried out to determine pump performance and predict curves in direct and reverse mode, improving certain components and conducting more profound research on certain specific issues.

Keywords


Pump as Turbine (PATs); CFD (Computational Fluid Dynamics); Best Efficient Point (BEP); efficiency prediction; mycro-hydropower.

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References


M. Pérez- Sánchez, F. J. Sánchez-Romero, H. Ramos M, and P. A. López-Jiménez, Bombas operando como turbinas (PAT) : principios de funcionamiento y selección. Universidad Politécnica de Valencia, 2020.

M. Pérez-Sánchez, J. F. P. Fernandes, P. J. C. Branco, P. A. López-Jiménez, and H. M. Ramos, “PATs Behavior in Pressurized Irrigation Hydrants towards Sustainability,†Water, vol. 13, no. 10, p. 1359, 2021, doi: 10.3390/w13101359.

J. W. Kim et al., “Simultaneous efficiency improvement of pump and turbine modes for a counter-rotating type pump-turbine,†Adv. Mech. Eng., vol. 8, no. 11, pp. 1–14, 2016, doi: 10.1177/1687814016676680.

S. Lee, C. Pomeroy, and S. Burian, “Setting Future Water Rates for Sustainability of a Water Distribution System,†J. Water Resour. Plan. Manag., vol. 147, no. 2, p. 04020108, 2021, doi: 10.1061/(asce)wr.1943-5452.0001313.

M. Binama, W. T. Su, X. Bin Li, F. C. Li, X. Z. Wei, and S. An, “Investigation on pump as turbine (PAT) technical aspects for micro hydropower schemes: A state-of-the-art review,†Renew. Sustain. Energy Rev., vol. 79, no. April 2016, pp. 148–179, 2017, doi: 10.1016/j.rser.2017.04.071.

S. Rawal, “Numerical Simulation on a Pump Operating in a turbine mode,†Proc. 23rd Int. users Symp., 2007.

C. A. M. Ãvila, F. J. Sánchez-Romero, P. A. López-Jiménez, and M. Pérez-Sánchez, “Leakage management and pipe system efficiency. Its influence in the improvement of the efficiency indexes,†Water (Switzerland), vol. 13, no. 14, 2021, doi: 10.3390/w13141909.

M. Pérez-Sánchez, F. J. Sánchez-Romero, H. M. Ramos, and P. A. López-Jiménez, “Improved planning of energy recovery in water systems using a new analytic approach to PAT performance curves,†Water (Switzerland), vol. 12, no. 2, 2020, doi: 10.3390/w12020468.

L. E. C. Rosado, P. A. Lopez, F. Sanchez, and P. Conejos, “Applied Strategy to Characterize the Energy,†Water, vol. 12, no. 6, pp. 1–22, 2020.

S. Ahmadi, S. Yadollah, and Ali Vakili, “Frameworks, quantitative indicators, characters, and modeling approaches to analysis of energy system resilience: A review,†Renew. Sustain. Energy Rev., vol. 144, p. 110988, Jul. 2021, doi: 10.1016/J.RSER.2021.110988.

T. Capurso, - L Bergamini, -S M Camporeale, - B Fortunato, and - M Torresi, “CFD Analysis of the Performance of a Novel Impeller for a Double Suction Centrifugal Pump Working as a Turbine,†in 13 th European Conference on Turbomachinery Fluid Dynamics & Thermodynamics, 2019, pp. 1–11.

M. Stefanizzi, T. Capurso, G. Balacco, M. Binetti, S. M. Camporeale, and M. Torresi, “Selection, control and techno-economic feasibility of Pumps as Turbines in Water Distribution Networks,†Renew. Energy, vol. 162, pp. 1292–1306, 2020, doi: 10.1016/j.renene.2020.08.108.

F. A. Plua, F. J. Sánchez-Romero, V. Hidalgo, P. A. López-Jiménez, and M. Pérez-Sánchez, “New expressions to apply the variation operation strategy in engineering tools using pumps working as turbines,†Mathematics, vol. 9, no. 8, pp. 1–17, 2021, doi: 10.3390/math9080860.

C. A. M. Ãvila, F. J. Sánchez-Romero, P. A. López-Jiménez, and M. Pérez-Sánchez, “Definition of the operational curves by modification of the affinity laws to improve the simulation of pats,†Water (Switzerland), vol. 13, no. 14, pp. 1–17, 2021, doi: 10.3390/w13141880.

F. Plua, V. Hidalgo, P. A. López-Jiménez, and M. Pérez-Sánchez, “Analysis of applicability of cfd numerical studies applied to problem when pump working as turbine,†Water (Switzerland), vol. 13, no. 15, pp. 1–18, 2021, doi: 10.3390/w13152134.

V. Hidalgo et al., “Scale-adaptive simulation of unsteady cavitation around a Naca66 hydrofoil,†Appl. Sci., vol. 9, no. 18, 2019, doi: 10.3390/app9183696.

E. Cando et al., “Unsteady numerical analysis of the liquid-solid two-phase flow around a step using Eulerian-Lagrangian and the filter-based RANS method,†J. Mech. Sci. Technol., vol. 31, no. 6, pp. 2781–2790, 2017, doi: 10.1007/s12206-017-0521-6.

J. C. Páscoa, F. J. Silva, J. S. Pinheiro, and D. J. Martins, “A new approach for predicting PAT-pumps operating point from direct pumping mode characteristics,†2012.

T. Wang, F. Kong, S. Yang, and Y. Fu, “Numerical Study on Hydraulic Performances of Pump as Turbine with Forward-Curved Blades,†in Fluids Engineering Division Summer Meeting, 2014, pp. 1–6, doi: https://doi.org/10.1115/FEDSM2014-21347.

X. Su, S. Huang, X. Zhang, and S. Yang, “Numerical research on unsteady flow rate characteristics of pump as turbine,†Renew. Energy, vol. 94, pp. 488–495, Aug. 2016, doi: 10.1016/j.renene.2016.03.092.

E. Frosina, D. Buono, and A. Senatore, “A Performance Prediction Method for Pumps as Turbines (PAT) Using a Computational Fluid Dynamics (CFD) Modeling Approach,†Energies, vol. 10, no. 1, 2017, doi: 10.3390/en10010103.

M. Sedlář, J. J. Jiříšoukal, and M. Komárek, “CFD analysis of middle stage of multistage pump operating in turbine regime.,†in Engineering Mechanics, 2009, vol. 16, no. 6, pp. 413–421.

P. HlboÄan and M. Varchola, “Numerical Simulation on a Mixed-Flow Pump Operating in a Turbine Mode,†Eng. Mech., vol. 20, no. 2, pp. 97–105, 2013.

F. Pugliese, F. De Paola, N. Fontana, M. Giugni, G. Marini, and J. F. Francos, “Experimental and numerical investigation of centrifugal Pumps As Turbines,†in Proceedings of the 10th International Conference on Energy Efficiency in Motor Driven System, 2017, pp. 6–7.

P. Kerschberger and A. Gehrer, “Hydraulic development of high specific-speed pump-turbines by means of an inverse design method, numerical flow-simulation (CFD) and model testing,†IOP Conf. Ser. Earth Environ. Sci., vol. 12, p. 012039, Aug. 2010, doi: 10.1088/1755-1315/12/1/012039.

S. S. Yang, F. Y. Kong, X. Y. Qu, and W. M. Jiang, “Influence of blade number on the performance and pressure pulsations in a pump used as a turbine,†J. Fluids Eng. Trans. ASME, vol. 134, no. 12, 2012, doi: 10.1115/1.4007810.

S. S. Yang, S. Derakhshan, and F. Y. Kong, “Theoretical, numerical and experimental prediction of pump as turbine performance,†Renew. Energy, vol. 48, pp. 507–513, Dec. 2012, doi: 10.1016/j.renene.2012.06.002.

T. Wang, C. Wang, F. Kong, Q. Gou, and S. Yang, “Theoretical, experimental, and numerical study of special impeller used in turbine mode of centrifugal pump as turbine,†Energy, vol. 130, pp. 473–485, 2017, doi: 10.1016/j.energy.2017.04.156.

M. Rossi, A. Nigro, and M. Renzi, “A predicting model of PaTs’ performance in off-design operating conditions,†in Energy Procedia, 2019, vol. 158, pp. 123–128, doi: 10.1016/j.egypro.2019.01.056.

A. Bahreini and A. Sattari, “Numerical and Economic Study of Performance of Centrifugal Pump as Turbine,†J. Comput. Appl. Mech., vol. 48, no. 2, pp. 151–160, 2017, doi: 10.22059/jcamech.2017.232024.137.

A. N. Jemal and M. G. Haile, “Comprehensive Review of Pump as Turbine,†Renew. Energy Sustain. Dev., vol. 5, no. 2, p. 68, Dec. 2019, doi: 10.21622/resd.2019.05.2.068.

J. B. Bogdanovic´-Jovanovic´, D. R. Milenkovic´, D. M. Svrkota, B. Bogdanovic´, and Z. T. Spasic´, “Pumps used as turbines: Power recovery, energy efficiency, CFD analysis,†Therm. Sci., vol. 18, no. 3, pp. 1029–1040, 2014, doi: 10.2298/TSCI1403029B.

S. S. Yang, H. L. Liu, F. Y. Kong, B. Xia, and L. W. Tan, “Effects of the radial gap between impeller tips and volute tongue influencing the performance and pressure pulsations of pump as turbine,†J. Fluids Eng. Trans. ASME, vol. 136, no. 5, 2014, doi: 10.1115/1.4026544.

M. Simão, M. Pérez-Sánchez, A. Carravetta, P. López-Jiménez, and H. M. Ramos, “Velocities in a centrifugal PAT operation: Experiments and CFD analyses,†Fluids, vol. 3, no. 1, Mar. 2018, doi: 10.3390/fluids3010003.

M. Renzi, P. Rudolf, D. Štefan, A. Nigro, and M. Rossi, “Energy recovery in oil refineries through the installation of axial Pumps-as-Turbines (PaTs) in a wastewater sewer: A case study,†in Energy Procedia, 2019, vol. 158, pp. 135–141, doi: 10.1016/j.egypro.2019.01.058.

M. Pérez-Sánchez, M. Simão, P. A. López-Jiménez, and H. M. Ramos, “CFD Analyses and experiments in a pat modeling: pressure variation and system efficiency,†Fluids, vol. 2, no. 4, Dec. 2017, doi: 10.3390/fluids2040051.

F. X. Shi, J. H. Yang, and X. H. Wang, “Analysis on the effect of variable guide vane numbers on the performance of pump as turbine,†Adv. Mech. Eng., vol. 10, no. 6, pp. 1–9, 2018, doi: 10.1177/1687814018780796.

B. Lal and T. S. Deshmukh, “Performance Analysis of Centrifugal Pump at Different Operating Mode,†vol. 4, no. 11, 2018, doi: 10.24113/ijoscience.v5i7.170.

H. Carravetta, A., Fecarotta, O., & Ramos, “Numerical simulation on Pump As Turbine: mesh reliability and performance concerns.,†in 2011 International Conference on Clean Electrical Power (ICCEP), 2011, pp. 169–174.

M. Simão, M. Pérez-Sánchez, A. Carravetta, and H. M. Ramos, “Flow conditions for PATS operating in parallel: Experimental and numerical analyses,†Energies, vol. 12, no. 5, 2019, doi: 10.3390/en12050901.

T. Capurso et al., “How to Improve the Performance Prediction of a Pump as Turbine by Considering the Slip Phenomenon,†Proceedings, vol. 2, no. 11, p. 683, Jul. 2018, doi: 10.3390/proceedings2110683.

T. Capurso et al., “Slip factor correction in 1-D Performance prediction model for paTs,†Water (Switzerland), vol. 11, no. 3, Mar. 2019, doi: 10.3390/w11030565.

E. Koswara, H. Budiman, and N. Fikri, “Flow Analysis in Pump As Turbines (PATs)Using Ansys Fluent Software,†Sintek J., vol. 14, no. 1, pp. 1–13, 2020.

S. Fengxia, Y. Junhu, M. Senchun, and W. Xiaohui, “Investigation on the power loss and radial force characteristics of pump as turbine under gas–liquid two-phase condition,†Adv. Mech. Eng., vol. 11, no. 4, pp. 1–10, 2019, doi: 10.1177/1687814019843732.

A. S. Aidhen, S. Malik, and C. D. Kishanrao, “Theoretical, numerical and experimental research of single stage, radial discharge centrifugal pump operating in turbine mode,†Int. J. Innov. Technol. Explor. Eng., vol. 8, no. 12, pp. 1265–1270, 2019, doi: 10.35940/ijitee.L3910.1081219.

A. Maleki, M. M. Ghorani, M. H. S. Haghighi, and A. Riasi, “Numerical study on the effect of viscosity on a multistage pump running in reverse mode,†Renew. Energy, vol. 150, pp. 234–254, 2020, doi: 10.1016/j.renene.2019.12.113.

S. Miao, J. Yang, F. Shi, X. Wang, and G. Shi, “Research on energy conversion characteristic of pump as turbine,†Adv. Mech. Eng., vol. 10, no. 4, pp. 1–10, 2018, doi: 10.1177/1687814018770836.

H. X. Shi, L. P. Chai, X. Z. Su, and R. Jaini, “Performance optimization of energy recovery device based on pat with guide vane,†Int. J. Simul. Model., vol. 17, no. 3, pp. 472–484, 2018, doi: 10.2507/IJSIMM17(3)443.

H. M. P. Rosa and B. S. Emerick, “Revista Brasileira de Engenharia Agrícola e Ambiental CFD simulation on centrifugal pump impeller with splitter blades Simulação CFD em rotor de bomba centrifuga com pás intermediárias,†pp. 3–7, 2020.

M. Liu, L. Tan, and S. Cao, “Theoretical model of energy performance prediction and BEP determination for centrifugal pump as turbine,†Energy, vol. 172, pp. 712–732, 2019, doi: 10.1016/j.energy.2019.01.162.

J. Du, H. Yang, Z. Shen, and J. Chen, “Micro hydro power generation from water supply system in high rise buildings using pump as turbines,†Energy, vol. 137, pp. 431–440, 2017, doi: 10.1016/j.energy.2017.03.023.

X. Wang, X., Yang, J., Xia, Z., Hao, Y., & Cheng, “Effect of Velocity Slip on Head Prediction for Centrifugal Pumps as Turbines,†Math. Probl. Eng., doi: doi:10.1155/2019/5431047 (https://doi.org/10.1155/2019/5431047).

M. Rossi, A. Nigro, and M. Renzi, “Experimental and numerical assessment of a methodology for performance prediction of Pumps-as-Turbines (PaTs)operating in off-design conditions,†Appl. Energy, vol. 248, no. April, pp. 555–566, 2019, doi: 10.1016/j.apenergy.2019.04.123.




DOI: http://dx.doi.org/10.18517/ijaseit.12.3.15290

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