Performance and Cost Comparison of Photovoltaic and Diesel Pumping Systems: In Central Rift Valley of Ethiopia

Year 2023, Volume: 4 Issue: 1, 73 - 90, 30.06.2023

Maney Ayalew Desta Getachew Shunki Tibba Mubarek Mohammed Issa Wariso Heyi

https://doi.org/10.46592/turkager.1272864

Abstract

Diesel pumps have extensively used for irrigation water pumping. However, this causes challenges both in terms of economic factors (fuel costs) and environmental impacts (emits air pollution). An alternative solution is using renewable energy sources. In this regard, a battery less solar PV energy system was designed and evaluated was designed and evaluated for the geographic location and metrological data of Dugda woreda, representing the central rift valley of Ethiopia. Performance testing were conducted on sunny days of April month and with time intervals of from 9:00 am to 5:00 pm, again the respective solar radiation ranges between 385.8 to 862.2 W m^(-2) h^(-1). The solar photovoltaic pumping has been evaluated with the head levels of 10, 12, 15, and 18 m. Accordingly the result showed that, PV system size can irrigate a tomato field of 0.33-0.75 ha with a mean daily water use of 8.7 and 17.4 m^3 〖day〗^(-1) at head levels of 10 and 18 meters, respectively. After evaluation, the maximum water flow rate has been at the midday day from 12:00 am to 1:00 pm. Comparative economic evaluation of the solar-powered water pump system and diesel pump devices were done using cycle cost breakdown and the cost of water per unit volume. Thus the long term economics of water pumping using solar photovoltaic and diesel pumping systems showed a cost of 1.33 〖ETB m〗^(-3) and 3 ETB m^(-3), respectively. The result demonstrated that photovoltaic water pump systems are more affordable for the long-term services of small to medium-scale farms than gasoline water pumps.

Keywords

Photovoltaic, Solar radiation, Pumps, Life cycle cost

Supporting Institution

Ethiopian Institute of Agricultural Research (EIAR)

Project Number

26-05

Thanks

Thanks for your publication.

References

• Benghanem M, Daffallah O, Alamri N and Joraid A (2014). Effect of pumping head on solar water pumping system. Energy Conversion and Management, 77: 334-339.
• Chande S, Naik N and Chandel R (2017). Review of performance studies of direct coupled photovoltaic water pumping systems, a case study. Renewable Sustainable Energy Reviews,76: 163-175.
• Elrefai M and Hamdy R (2016). Design and performance evaluation of a solar water pumping system: A case study. Eighteenth International Middle East Power Systems Conference (MEPCON).
• Foster R, Argaw N, and Ellis A (2001). Renewable energy for water pumping applications ın rural villages; period of performance. April 1, 2001-September 1, 2001. United States: N. p., 2003. Web. https://doi.org/10.2172/15004054
• Girma M, Assefa A and Molinas M (2015). Feasibility study of a solar photovoltaic water pumping system for rural Ethiopia. AIMS Enviromental Science, 2(32): 697-717.
• Gouws R and Lukhwareni T (2012). Factors influencing the performance and efficiency of solar water pumping systems : A review. International Journal of Physical Sciences, 7(48): 69-80.
• Hartung H and Pluschke L (2018). The benefits and risks of solar powered irrigation-a global review. Food and Agricultural Organization.
• Hulluka TA, Balcha SK, Yohannes B, Bantider A and Negatu A (2023). Review: Groundwater research in the Ethiopian Rift Valley Lakes region. Frontiers in Water, 5: 819568.
• Maughan T, Drost D and Allen N (2015). Vegetable irrigation; Sweet pepper and sizing and testing of solar photovoltaic water pumping system for irrigation purposes tomato. Horticulture, 3: 1-5.
• Morales D and Busch J (2010). Design of small photovoltaic solar-powered water pump systems’, United States Department Agriculture and Natural resources Conservation Service.
• Narale P, Rathore S and Kothari S (2013). Study of solar pv water pumping system for ırrigation of horticulture crops. International Journal of Engineering Science Invention, 2(12): 54-60.
• Nasir A (2016). Design, simulation and analysis of photovoltaic water pumping system for ırrigation of a potato farm at Gerenbo. Masters Thesis, Addis Ababa Institute of Technology School of Graduate Studies School of Mechanical and Industrial Engineering, p.98.
• Osaretin A and Edeko F (2016). Design and implementation of a solar charge controller with variable output. Journal of Electrical and Electronic Engineering, 12(2): 40-50.
• Otoo M, Lefore N, Schmitter P, Barron J and Gebregziabher G (2018). Business model scenarios and suitability: smallholder solar pump-based irrigation in Ethiopia. Agricultural Water Management-Making a Business Case for Smallholders.
• Park S (2013). Fundamentals of engineering economics. Pearson International Edition, England.
• Sass J and Hahn A (2020). Solar Powered Irrigation Systems (SPIS), Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Bonn.
• Villalobos J and Fereres E (2016). Principles of Agronomy for Sustainable Agriculture, Springer, Switherland.
• Zadi D and Bamford E (2016). Scaling up solar powered water supply systems: A review of experiences, UNICEF.
• Zaki M and Eskander N (1996). Matching of photovoltaic motor-pump systems for maximum efficiency operation. Renewable Energy, 7(3): 279-288.
• Zegeye M, Tadiwos T and Aman A (2014). Optimal sizing of solar water pumping system for small scale irrigation : Case study of Dangila. International Journal of Sustainable and Green Energy, 3(5): 99-107.