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Economic analysis of a photovoltaic, forced-convection, solar grain drier

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  • Mumba, J.

Abstract

An analysis of a drier with passive drying-air temperature control for use on farms is presented. The experimental solar drier with a grain capacity of 90 kg has an initial capital cost of £601. Semi-skilled artisans can build the drier at half the price if one used local materials. The cost of sun drying, including a 25% grain loss, is £0.11/kg. With delivery of useful energy at £0.06/kWh, 300+ kg may be dried in addition at an added cost of £0.01/kg. The drier has a payback period of less than 1 year and is cost-effective for a photovoltaic to solar air-heater area ratio of about 0.22.

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  • Mumba, J., 1995. "Economic analysis of a photovoltaic, forced-convection, solar grain drier," Energy, Elsevier, vol. 20(9), pages 923-928.
    • Handle: RePEc:eee:energy:v:20:y:1995:i:9:p:923-928
    DOI: 10.1016/0360-5442(95)00037-H
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    Cited by:

    1. Sharma, Atul & Chen, C.R. & Vu Lan, Nguyen, 2009. "Solar-energy drying systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(6-7), pages 1185-1210, August.
    2. Tiwari, Sumit & Agrawal, Sanjay & Tiwari, G.N., 2018. "PVT air collector integrated greenhouse dryers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 90(C), pages 142-159.
    3. Hossain, M.A. & Woods, J.L. & Bala, B.K., 2005. "Optimisation of solar tunnel drier for drying of chilli without color loss," Renewable Energy, Elsevier, vol. 30(5), pages 729-742.
    4. Tiwari, Sumit & Tiwari, G.N. & Al-Helal, I.M., 2016. "Development and recent trends in greenhouse dryer: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 1048-1064.
    5. Tate, Graham & Mbzibain, Aurelian & Ali, Shaukat, 2012. "A comparison of the drivers influencing farmers' adoption of enterprises associated with renewable energy," Energy Policy, Elsevier, vol. 49(C), pages 400-409.
    6. Simate, I.N, 2003. "Optimization of mixed-mode and indirect-mode natural convection solar dryers," Renewable Energy, Elsevier, vol. 28(3), pages 435-453.

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