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





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.

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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.


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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

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