Ahmad Imam Rifa'i, Dwi Aries Himawanto


In recent years, turbine use or pump operation as a turbine (PAT) has become an ongoing alternative to managing Water Distribution Networks (WDNs) in microhydro power generation units. Commercial pumps available on the market have a variety of shapes and models. Generally, pump manufacturers do not provide their pump characteristics curves that work as turbines. This paper presents a theoretical study on the efficiency of pump operation used as turbine (Pump as Turbine). Based on the results of the study, PAT efficiency increases with the specific speed (Nsp) and with special impeller will increase efficiency by 93% 8.07% and 5.45% and efficiency also increased by modifying the thickness of the pump blade.


Pump as Turbine (PAT) , blade, efficiency, specific speed


Brown A, Müller S, Dobrotkova Z.,2011 Renewable energy: markets and prospects by technology.IEA Inf Pap.

Ipcc.,2011,Special report on renewable energy sources and climate change mitigation.United Kingdom and NewYork, NY, USA: Cambridge University.

S. Derakhshan A. Nourbakhsh., 2008, Experimental study of characteristic curves of centrifugal pumps working as turbines in different specific speeds, Elsevier Journal of Experimental Thermal and Fluid Science 32 (800–807).

M. Amelio, S.Barbarelli., 2004 A one-dimensional numerical model for calculating the efficiency of pumps as turbines b for implementation in micro hydro powerplants, in: ASME 7th Biennial Conference on Engineering System Design and Analysis, pp. 65–77

H. Nautiyal, Varun, A. Kumar., 2010, Reverse running pumps analytical, experimental and computational study: A review, Renewable and Sustainable Energy Reviews 14 (2010) 2059–2067, S.L.Dixon, Fluid Mechanics and Thermodynamics of Turbomachinery, fifth ed.,Elsevier, 2005 (Chapter 9)

Thoma D, Kittredge CP., 1931, Centrifugal pumps operated under abnormal conditions. Power:881–4.

Thode HW, Azbill DC., 1984, Typical applications of induction generators and control system considerations. IEEE Transactions on Industry Applications November /December :1A-20(6).

Isasoiu EC, Bucur DM, Ghergu CM, Tırala NO., 2008., "Using standard pumps as turbines. International Group for Hydraulic Efficiency Measurement.

Derakhshan S,Nourbakhsh., 2008, A. Experimental study of characteristics curves of centrifugal pumps working as turbines in different specific speeds. Experimental Thermal and Fluid Science;32:800–7

Gulich JF., 2007., "Centrifugal pumps". Turbine operations general characteristics. s.l. Springer;

Rawal S, Kshirsagar JT., 2007, Numerical simulation on a pump operating in a turbine mode. Texas A&M University System, Turbomachinery Laboratory;

Williams A.,2003, Pump as turbines – a user’s guide. 2nd ed. Warwickshire: ITDG Publishing;

Maher P. Design and implementation of a 2.2 kW pico hydro serving 110 house holds. MicroHydro Centre – Nottingham Trent University

Motwania KH, Jainb SV, Patel RN., 2013, Cost analysis of pump as turbine for pico hydropower plants–a case study. Proc Eng; 51:721–6.

Xu Tan, Abraham Engeda., 2016, Performance of centrifugal pumps running in reverse as turbine: Part2 - systematic specific speed and specific diameter based performance prediction Renewable Energy 99 (2016) 188-197

H. Nautiyal, V. Varun, A. Kumar, S. Yadav., 2011, Experimental investigation of centrifugal pump working as turbine for small hydropower systems, Energy. Sci. Tech. 1 (1) 79-86, http://dx.doi.org/10.3968/g1293.

Tao Wang, Chuan Wang, Fanyu Kong, Qiuqin Gou, Sunsheng Yang., 2017, Theoretical, experimental, and numerical study of special impeller used in turbine mode of centrifugal pumpas turbine, In Energy, Volume 130,Pages 473-485.

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