Design and fabrication of a double- chamber solar dryer

Keywords: Drying, Solar drying, Agricultural produce, Engineering, Crop production

Abstract

Object of research: This paper discusses the design and construction of a modified, cost effective solar dryer for use by the average Nigerian farmer or agri-business entrepreneur.

Investigated problem: Local farmers often have a lot of difficulties in properly drying harvested agricultural produce for storage and processing purposes, safely and efficiently due to capital constraints. There was therefore a need for an efficient, low cost solar dryer design to aid in this pursuit.

Methodology: The designed dryer is a passive dryer that makes use of heat energy tapped through glass collectors placed over the drying and air inlet chambers respectively. The dryer was designed and constructed with carefully selected, inexpensive materials with dimensions of 40cm x 40cm x 60cm for the drying chamber and dimensions of 10cm x 80cm x 40cm for the heating chamber. The glass collectors (4mm thick) were inclined at an angle of incidence of 17.26°. Okra slices were used to test the performance of the dryer.

Results / Area of practical use: The study yielded a low cost (€145.60) modified solar dryer capable of drying agricultural produce in a safe and clean way. During eight (8) hours of drying under a temperature range of 39 °C – 45 °C, the initial weight of the okra slices reduced from 150g to 9g, 9g, 10g and 9g on each of the four trays of the drying chamber respectively. Local farmers and agripreneurs will be encouraged to make use of this clean alternative of drying food produce without the drawbacks from regular sun drying.

Conclusion: There is need for more work to be done in terms of installation of solar panels to enhance dryer performance. More work should also be carried out on tests during the dry season for increased dryer efficiency.

Downloads

Download data is not yet available.

Author Biographies

Olunloyo Oluwatoyin, Federal College of Forestry

Department of Crop Production Technology

Ibiyeye Dare, Federal College of Forestry

Department of Crop Production Technology

Ajiboye Opeyemi, Forestry Research Institute of Nigeria

Department of Soil and Tree Nutrition

References

Etim, P. J., Eke, A. B., Simonyan, K. J. (2020). Design and development of an active indirect solar dryer for cooking banana. Scientific African, 8. doi: http://doi.org/10.1016/j.sciaf.2020.e00463
Nandi, P. (2009). Solar Thermal Energy Utilization in Food Processing Industry in India. Journal of Science and Technology, 123–131.
Behera, D. D., Biswajit, N., Shiv, S. S. (2017). Design and Fabrication of Solar Dryer for Sustainable Livelihoods of Fisher Women. International Journal of Engineering and Management Research, 7 (5), 125–139.
Pangavhane, D., Sawhney, R. L., Sarsavadia, P. (2002). Design, development and performance testing of a new natural convection solar dryer. Energy, 27 (6), 579–590. doi: http://doi.org/10.1016/s0360-5442(02)00005-1
Stiling, J., Li, S., Stroeve, P., Thompson, J., Mjawa, B., Kornbluth, K., Barrett, D. M. (2012). Performance evaluation of an enhanced fruit solar dryer using concentrating panels. Energy for Sustainable Development, 16 (2), 224–230. doi: http://doi.org/10.1016/j.esd.2012.01.002
Sharma, N., Siddhartha, V. (2012). Stochastic techniques used for optimization in solar systems: A review. Renewable and Sustainable Energy Reviews, 16 (3), 1399–1411. doi: http://doi.org/10.1016/j.rser.2011.11.019
Forson, F. K., Nazha, M. A. A., Akuffo, F. O., Rajakaruna, H. (2007). Design of mixed-mode natural convection solar crop dryers: Application of principles and rules of thumb. Renewable Energy, 32 (14), 2306–2319. doi: http://doi.org/10.1016/j.renene.2006.12.003
Maxwell, J. (2011). Theory of Heat. Cambridge: Cambridge University Press. doi: http://doi.org/10.1017/cbo9781139057943
Jibril, A. N., Yadav, K. C., Abubakar, M. S., Binni, I. M. (2016). Effect of Moisture Content on Physical Properties of Bambara Groundnut (Vigna subterranea L. Verdc.) Seeds. International Journal of Engineering Research And, 5 (7). doi: http://doi.org/10.17577/ijertv5is070288
Kumar, D., Prasad, S., Murthy, G. S. (2011). Optimization of microwave-assisted hot air drying conditions of okra using response surface methodology. Journal of Food Science and Technology, 51 (2), 221–232. doi: http://doi.org/10.1007/s13197-011-0487-9
Alamu, O. J., Nwaokocha, C. N., Adunola, O. (2010). Design and Construction of a Domestic Passive Solar Dryer. Leornado Journal of Sciences, 16, 71–82. Available at: http://ljs.academicdirect.org/A16/071_082.pdf
Idowu, O. S., Olarenwaju, O. M., Ifedayo, O. I. (2013). Determination of optimum tilt angles for solar collectors in low-latitude tropical region. International Journal of Energy and Environmental Engineering, 4 (1), 29. doi: http://doi.org/10.1186/2251-6832-4-29
Eke, A. B. (2013). Identification of Suitable material for Solar thermal collectors in rural areas of Zaria, Nigeria. International Journal of Engineering and Technology, 3 (8), 834–841.

👁 38
⬇ 27
Published
2022-02-28
How to Cite
Oluwatoyin, O., Dare, I., & Opeyemi, A. (2022). Design and fabrication of a double- chamber solar dryer. ScienceRise, (1), 12-18. https://doi.org/10.21303/2313-8416.2022.002321
Section
Innovative technologies in industry