Effects of Long-Term Flow Variation on Microhydropower Energy Production in Pressure Reducing Valves in Water Distribution Networks
Publication: Journal of Water Resources Planning and Management
Volume 143, Issue 3
Abstract
Incorporating microhydropower (MHP) turbines within water supply networks has the potential to improve the economic and environmental sustainability of the sector. However, long-term flow and head variations in water networks are key risk factors that increase turbine performance uncertainty in the medium-to-long term, potentially impacting the investment payback period. Using high-resolution historical flow and head data across a number of pressure reducing valve sites in water networks in Ireland, this study presents an assessment of the impact of flow and head variations on turbine efficiency and power output over a 20-year period. Results indicated that pumps-as-turbines (PATs) represent a viable low-cost option over the long term at sites with smaller power output potential. Where flow and head rates displayed considerable fluctuation, the integration of a two-PAT configuration could improve operating efficiency and maximize power output. This design strategy opens up the opportunity to conduct energy recovery from sites that may previously have been considered unsuitable for MHP.
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Acknowledgments
This project is part funded by the European Regional Development Fund (ERDF) through the Ireland–Wales Programme (INTERREG 4A). The authors wish to extend a sincere thank you to Dublin City Council for the provision of data and information.
References
Agarwal, T. (2012). “Review of pump as turbine (PAT) for micro-hydropower.” Int. J. Emerging Technol. Adv. Eng., 2(11), 163–169.
Carravetta, A., Del Giudice, G., Fecarotta, O., and Ramos, H. M. (2012). “Energy production in water distribution networks: A PAT design strategy.” Water Resour. Manage., 26(13), 3947–3959.
Carravetta, A., Del Giudice, G., Fecarotta, O., and Ramos, H. M. (2013). “PAT design strategy for energy recovery in water distribution networks by electrical regulation.” Energies, 6(1), 411–424.
Carravetta, A., Fecarotta, O., Del Giudice, G., and Ramos, H. M. (2014a). “Energy recovery in water systems by PATs: A comparisons among the different installation schemes.” Proc. Eng., 70(6), 275–284.
Carravetta, A., Fecarotta, O., Sinagra, M., and Tucciarelli, T. (2014b). “Cost benefit analysis for hydropower production in water distribution networks by a pump as turbine.” J. Water. Resour. Plann. Manage., 04016076.
Colombo, A., and Kleiner, Y. (2011). “Energy recovery in water distribution systems using microturbines.” Probab. Method Water Waste Eng., 23–27, 1–9.
Corcoran, L., Coughlan, P., and McNabola, A. (2013). “Energy recovery potential using micro hydropower in water supply networks in the UK and Ireland.” Water Sci. Technol., 13, 552–560.
Corcoran, L., McNabola, A., and Coughlan, P. (2012). “Energy recovery potential of the Dublin region water supply network.” Proc., Int. Water Association: World Congress on Water, Climate and Energy, International Water Association (IWA), Dublin, Ireland, 1–8.
Corcoran, L., McNabola, A., and Coughlan, P. (2016). “Predicting and quantifying the effect of variations in long-term water demand on micro-hydropower energy recovery in water supply networks.” Urban Water, in press.
Daigger, G. T. (2009). “Evolving urban water and residuals management paradigms: Water reclamation and reuse, decentralization and resource recovery.” Water Environ. Res., 81(8), 809–823.
DEFRA (Department for Environment, Food and Rural Affairs). (2008). “Future water: The Government’s water strategy for England.” Norwich, U.K.
DoEHLG (Department of the Environment, Heritage and Local Government). (2010). “Report of the local government efficiency review group.” Dublin, Ireland.
Environment Agency. (2009). “Renewable energy potential for the water industry.” Bristol, U.K.
ESHA (European Small Hydropower Association). (2004). “Guide on how to develop a small hydropower plant.” Brussels, Belgium.
Eurostat. (2014). “Hydropower.” ⟨http://epp.eurostat.ec.europa.eu/portal/page/portal/data_centre_natural_resources/natural_resources/energy_resources/hydropower⟩ (Dec. 1, 2015).
Fecarotta, O., Aricò, C., Carravetta, A., Martino, R., and Ramos, H. M. (2015). “Hydropower potential in water distribution networks: Pressure control by PATs.” Water Resour. Manage., 29(3), 699–714.
Gaius-Obaseki, T. (2010). “Hydropower opportunities in the water industry.” Int. J. Environ. Sci., 1(3), 392–402.
Gallagher, J., Harris, I. M., Packwood, A. J., McNabola, A., and Williams, A. P. (2015). “A strategic assessment of micro-hydropower energy recovery in the UK and Irish water industry: Identifying technical and economic constraints.” Renewable Energy, 81, 808–815.
García, J. P., Marco, A. C., and Santos, S. N. (2010). “Use of centrifugal pumps operating as turbines for energy recovery in water distribution networks. Two case study.” Adv. Materials Res., 107, 87–92.
Giugni, M., Fontana, N., and Ranucci, A. (2014). “Optimal location of PRVs and turbines in water distribution systems.” J. Water Resour. Plann. Manage., 04016076.
Kwok, S. C., Lang, H., and O’Callaghan, P. (2010). Water technology markets 2010: Key opportunities and emerging trends, Media Analytics, Oxford, U.K.
McNabola, A., et al. (2014a). “Energy recovery in the water industry using micro-hydropower: An opportunity to improve sustainability.” Water Policy, 16(1), 168–183.
McNabola, A., Coughlan, P., and Williams, A. P. (2014b). “Energy recovery in the water industry: An assessment of the potential of micro-hydropower.” Water Environ. J., 28(2), 294–304.
Motwani, K. H., Jain, S. V., and Patel, R. N. (2013). “Cost analysis of pump as turbine for Pico hydropower plants—A case study.” Proc. Eng., 51, 721–726.
Nautiyal, H., and Varun, K. A. (2010). “CFD analysis on pumps working as turbines.” Hydro Nepal, 6(6), 35–37.
Ogayar, B., Vidal, P. G., and Hernandez, J. C. (2009). “Analysis of the cost for the refurbishment of small hydropower plants.” Renew. Energy, 34(11), 2501–2509.
Ørke, P. R. (2010). “Zeropex: Pressure control with a payback.” All Energy Exhibition and Conf. 2010, Reed Elsevier, London.
Power, C., Coughlan, P., and McNabola, A. (2014). “Development of an evaluation method for hydropower energy recovery in wastewater treatment plants: Case studies in Ireland and the UK.” Sustainable Energy Technol. Assess., 7, 166–177.
Ramos, H., and Borga, A. (1999). “Pumps as turbines: An unconventional solution to energy production.” Urban Water, 1(3), 261–263.
Saket, R. K. (2008). “Design, development and reliability evaluation of a micro hydro-power generation system based on municipal waste water.” Proc., IEEE Electrical Power and Energy Conf., IEEE, New York, 1–8.
Samora, I., Hasmatuchi, V., Münch-Alligné, C., Franca, M. J., Schleiss, A. J., and Ramos, H. M. (2016). “Experimental characterization of a five blade tubular propeller turbine for pipe inline installation.” Renewable Energy, 95, 356–366.
Sitzenfrei, R., and Rauch, W. (2015). “Optimizing small hydropower systems in water distribution systems based on long-time-series simulation and future scenarios.” J. Water Resour. Plann. Manage., 04016076.
Sitzenfrei, R., and Von Leon, J. (2014). “Long-time simulation of water distribution systems for the design of small hydropower systems.” Renewable Energy, 72, 182–187.
Sitzenfrei, R., Von Leon, J., and Rauch, W. (2014). “Design and optimization of small hydropower systems in water distribution networks based on 10-years simulation with Epanet2.” Proc. Eng., 89, 533–539.
Sustainable energy authority of Ireland (SEAI). (2013). “Energy in Ireland: Key statistics 2013.” Dublin, Ireland.
Teuteberg, B. (2010). “Design of a pump microhydro system for an abalone farm.” Stellenbosch Univ., Stellenbosch, South Africa.
UKWIR (United Kingdom Water Industry Research). (2010). “Energy efficiency in the water industry: A compendium of best practices and case studies—Global report.” London.
Vicente, D. J., Garrote, L., Sánchez, R., and Santillán, D. (2016). “Pressure management in water distribution systems: Current status, proposals, and future trends.” J. Water Resour. Plann. Manage., 04016076.
Vilanova, M. R. N., and Balestieri, J. A. P. (2014). “Hydropower recovery in water supply systems: Models and case study.” Energy Convers. Manage., 84, 414–426.
Williams, A. A. (1996). “Pumps as turbines for low cost micro hydro power.” Renewable Energy, 9(1–4), 1227–1234.
Williams, A. A., Smith, N., Bird, C., and Howard, M. (1998). “Pumps as turbines and induction motors as generators for energy recovery in water supply systems.” J. Chart. Inst. Water Environ. Manage., 12(3), 175–178.
Zilberman, D., Sproul, T., Rajagopal, D., Sexton, S., and Hellegers, P. (2008). “Rising energy prices and the economics of water in agriculture.” Water Policy, 10, 11–21.
Information & Authors
Information
Published In
Journal of Water Resources Planning and Management
Volume 143 • Issue 3 • March 2017
Copyright
©2016 American Society of Civil Engineers.
History
Received: Mar 23, 2016
Accepted: Aug 17, 2016
Published online: Oct 18, 2016
Published in print: Mar 1, 2017
Discussion open until: Mar 18, 2017
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