Document Type : Research Paper


1 Department of Physics, Covenant University, Nigeria

2 Covenant University


This research focuses on the need for preserving fruits in rural areas to prevent waste. The solar drier is made of vital chambers i.e. the concentrator chamber (that harvests the solar irradiance), the transport pipe (that transports the heat generated by convection) and hanger chamber (where the fruits are placed). The temperature within the concentrator chamber and hanger chamber was monitored. The design allowed heat transfer by convection from the collector to the chamber at an efficiency of 92 %. The design allowed the temperature build up in the solar collector to be transported faster through hanger chamber with the help of incorporated detachable low power dc fan. This arrangement makes the dryer to either operate in the natural convection dryer mode (without the fan) or as a forced convection dryer (with the fan attached). It is observed that the forced convection provided higher air in-flow and hence greater drying capability. However, regions with moderate precipitation may have challenges of delayed fruit drying and growth of microorganism over the surfaces of the dried fruit. 

Graphical Abstract

Design and construction of fruit solar drier for rural settlements


Main Subjects

[1].  Antwi, K. I. Comparative Study of Hybrid Solar-gas Crop Dryer. M.Sc Thesis. University of Cape Coast, Ghana. Available from ˂>. [02 October 2014] (2007).


[2] Dey, C. “Heat transfer aspect of an elevated linear absorber”. Solar Energy, Vol. 76, No. 1-3, pp. 243-249, (2004). 


[3] Emetere M.E., & Akinyemi M.L., “Prospects of Solar Energy in the Coastal Areas of Nigeria”, 2015 PIAMSEE: AIP Conference Proceedings, 1705 (1), 020035 (2015). 


[4].  Green Systems UK. A questions and answers on solar hot water. Available online at water. (accessed 14th August, 2018) (2014).


[5] Itodo, I.N.; Obetta, S.E.; and Satimehin, A.A. “Evaluation of a solar crop dryer for rural applications in Nigeria” Botswana J. Technol. Vol. 11, No. 2, pp. 58- 62, (2002). 


[6].  Key World Energy Statistics IEA. 2014:  Vol. 6, No. 24, pp. 28. (2014).


[7] Koyuncu, T., “An investigation on the performance improvement of greenhouse type agricultural dryers”. Renewable Energy, Vol.31, pp. 1055-1071, (2006). 


[8] Kraemer D, Poudel B, Ping F, Hsien C, Christopher X, Xiao Y, Wang X, Wang D, Andrew K, Matteo C, Ren Z and Chen G, “High performance flat panel solar thermoelectric generators with high thermal concentration”. Nature Materials Vol. 10, pp. 532–538, (2011). 


[9]. Kulichenko. N and Wirth. J. Concentrating solar power in developing countries. O Regulatory and financial incentivies for scaling up. A World Bank study, pp. 20-26, (2012).


[10] Lewis, Nathan, George and Crabtree. Basic Research Needs for Solar Energy. Report of the basic energy sciences workshop on solar energy utilization, pp. 18-21, (2005).


[11] Luque, A. and Hegedus, S. Handbook of Photovoltaic Science and Engineering. Publisher: John Wiley & Sons, Incpp. 1132, (2003).


[12] ME Emetere, OI Osunlola, AD Adejumo, AO Dauda, “Design and Construction of A Domestic Solar Power Bank in a Convective Environment”, The Open Fuels & Energy Science Journal, Vol. 11, No. 1, pp. 16-28, (2018). 


[13] Mills, D. “Advances in solar thermal electricity technology”. Solar Energy, Vol. 76, No. 1-3, No. 19-31, (2004). 


[14] MoFA Statistics, Research and Information Directorate (SRID). Agriculture in Ghana, Facts and Figures Ministry of food and Agriculture (MoFA), Ghana, (2011).


[15] Moses E. Emetere, Marvel L. Akinyemi, and Etimbuk B. Edeghe, “A Simple Technique for Sustaining Solar Energy Production in Active Convective Coastal Regions”, International Journal of Photo energy  Vol. 2016, Art. 3567502, pp. 1-11, (2016). 


[16] Solanki, C. C. “Solar photovoltaic technology and systems”. A Manual for Technicians, Trainers and Engineers Vol. 10, pp. 14-19, (2013). 


[17] Weiss, W. and Buchinger, J “Solar Drying Austrian Development Cooperation, Austria”.  [17 June 2014] (2002).


[18] Zakari, A. K. Ghana National Mango Study PACT II Program and International Trade Centre Ghana. (2012).