'Worst month’ and ‘critical period' methods for the sizing of solar irrigation systems - A comparison

Keywords: Solar photovoltaic energy, water pumping, irrigation, sizing


Despite the fact that solar photovoltaic (PV) water pumping systems, in particular, irrigation systems have been in use for more than 40 years, there remains a need for their improvement and development. The sizing of such systems is very important in terms of their energy output and hydraulic sustainability. This paper presents and explains an innovative methodology for the sizing of PV irrigation systems, called the Critical Period Method (CPM). CPM includes information about the design of the elements of the solution, the PV system, the pump station and the water reservoir, based on the critical period of operation of each one. The period within which water pumping and water consumption can be balanced is usually at least one day and may be several days, but it is usually no more than five days. A comparison between the most commonly used sizing method, the Worst Month Method (WMM) and the CPM method will be presented. It will be shown that the new method, CPM, could be beneficial for the sizing of PV irrigation systems.


= 494 veces | PDF
= 461 veces|


Download data is not yet available.

Author Biographies

Bojan Ðurin, University of Zagreb

Department for Hydrotechnics, Faculty of Geotechnical Engineering

Shpetim Lajqi, University of Prishtina"Hasan Prishtina"

Department for Construction and Mechanization, Faculty of Mechanical Engineering

Lucija Plantak

Independent researcher


B. Borisov, B. Đurin, and J. Matin, “The concept of sustainable irrigation on the example of football field of f.c. ”obreš”, sveti ilija, croatia,” Inženjerstvo okoliša, vol. 3, no. 1, pp. 71–81, Jul. 2016.

A. Escudero. (2008, Feb.) Sizing of standalone pv systems based on the “worst month” method. TRICALCAR. [Online]. Available: http://www.itrainonline.org/itrainonline/mmtk/wireless_en/files_2008/15_en_solar-energy-dimensioning_handout.pdf

M. S. Ebaid, H. Qandil, and M. Hammad, “A unified approach for designing a photovoltaic solar system for the underground water pumping well-34 at disi aquifer,” Energy Conversion and Management, vol. 75, pp. 780–795, Nov. 2013.

P. E. Campana and et al, “Economic optimization of photovoltaic water pumping systems for irrigation,” Energy Conversion and Management, vol. 95, pp. 32–41, May 2015.

J. Margeta and Z. Glasnović, “Hybrid res-hep systems development,” Water resources management, vol. 25, no. 9, pp. 2119–2239, Jul. 2011.

J. Margeta and Z. Glasnović, “Theoretical settings of photovoltaic-hydro energy system for sustainable energy production,” Solar Energy, vol. 86, no. 3, pp. 972–982, Mar. 2012.

J. Kenna and B. Gillett, Solar Water Pulping: A Handbook. London, Great Britain: Intermediate Technology Publications, 1985.

F. Cuadros, F. López, A. Marcos, and J. Coello, “A procedure to size solar-powered irrigation (photoirrigation) schemes,” Solar Energy, vol. 76, no. 4, pp. 465–473, Apr. 2004.

I. Yahyaoui, M. Chaabene, and F. Tadeo, “An algorithm for sizing photovoltaic pumping systems for tomatoes irrigation,” in International Conference on Renewable Energy Research and Applications (ICRERA), Madrid, Spain, 2013, pp. 1089–1095.

B. Đurin and J. Margeta, “Analysis of the possible use of solar photovoltaic energy in urban water supply systems,” Water, vol. 6, no. 6, pp. 1546–1561, May 2014.

B. Đurin, “Sustainability of the urban water supply system operating,” PhD thesis, Faculty of Civil Engineering, Architecture and Geodesy, University of Split, Split, Croatia, 2014.

B. Đurin, “Sizing of the sustainable irrigation system by using of the critical period method: Case study of the football club ‘’obreš’’, sveti ilija, croatia,” International Journal of Sustainable Energy Development, vol. 4, no. 1, pp. 206–214, 2015.

B. Đurin, J. Margeta and D. Bojanić, “The impact of the water consumption regime on the work of reservoirs,” E-Water, vol. 1, pp. 1–21, Jan. 2015.

A. A. Ghoneim, “Design optimization of photovoltaic powered water pumping systems,” Energy Conversion and Management, vol. 47, no. 11-12, pp. 1449–1463, Jul. 2006.

Adria24. Accessed Dec. 27, 2015. [Online]. Available: http://www.adria24.hr/destinacije/

Google maps. location of sveti ilija and football field f.c. obreš. Accessed Jul. 20, 2015. [Online]. Available: https://www.google.hr/maps/

B. Hlevnjak, S. Strelec, and J. Jug, “Hydrogeological conditions of occurrence of clay interbed within varaždin aquifer,” Inženjerstvo okoliša, vol. 2, no. 2, pp. 73–81, Dec. 2015.

Buy Irrigation. (2013, Sep. 24) Accessed Jul. 28, 2015. [Online]. Available: https://buyirrigation.wordpress.com/tag/football-pitch-irrigation/

Soda-Solar radiation data. (2004, Sep. 22) Solar energy services for professionals. Accessed Nov. 4, 2016. [Online]. Available: http: //www.soda-is.com/eng/services/services_radiation_free_eng.php

“Meteorological and hydrological service.: Meteorological and hydrological data for varaždin from 2004 until 2014,” MHSC, Zagreb, Croatia, Tech. Rep.

Energy Trend. (2018, Aug. 1) Accessed Feb. 20, 2017. [Online]. Available: https://pv.energytrend.com/pricequotes.html

PVInsights. (2018, Jul. 30) Accessed Feb. 20, 2017. [Online]. Available: http://pvinsights.com/RetailerPrice.php

SolarServer. (2017, May. 31) Pvx spot market price index solar pv modules: Reutlingen, njemačka. Accessed Feb. 20, 2017. [Online]. Available: https://www.solarserver.com/service/pvx-spot-marketprice-index-solar-pvmodules.htm

M. A. Green and et al, “Solar cell efficiency tables (version 50),” Progress in photovoltaic’s, vol. 25, no. 7, pp. 668–676, Jul. 2017.

CleanTechnica. (2015, Feb. 9) First solar achieves new world conversion efficiency record for cadmium-telluride solarcells. Accessed Feb. 20, 2017. [Online]. Available: https://goo.gl/p7pyDg

How to Cite
Ðurin, B., Lajqi, S., & Plantak, L. (2018). ’Worst month’ and ‘critical period’ methods for the sizing of solar irrigation systems - A comparison. Revista Facultad De Ingeniería Universidad De Antioquia, (88), 101-110. https://doi.org/10.17533/udea.redin.n88a11