The Design, Fabrication and Performance Evaluation of Solar Sustained Batch Type Maize Dryer for Value Addition

Year 2018, Volume: 2 Issue: 2, 50 - 56, 10.04.2018

Fraz Ahmad Khan

https://doi.org/10.31015/jaefs.18008

Cited By: 2

Abstract

Drying is the taking away of water
from agricultural product thus at the same time provide extended period of
shelf life. In this study, an innovative solar sustained maize dryer along with
screw conveyor for unloading the grain and central air perforated duct
(throughout aeration chamber length) has been developed. High drying rate was
achieved due to central air distribution model of the dryer during the drying
process. Using 758-kg of freshly harvested maize at moisture content 24% (wet basis),
dryer was evaluated. The average aeration rate of the solar sustained maize
dryer was 3.67 kilogram per hour. 60% saving in drying time was also achieved by
using the solar sustained maize dryer. From 24% to 13% moisture content for
drying the whole maize, solar sustained maize dryer took 27 hours. It is
economical and environment friendly drying method. Cost analysis was also done
and it was found by using this drying method, at very low cost we can
dehydrated better quality maize. At community level, marketable size of the
solar sustained maize dryer can be better and formed for revolution of
agriculture in the country-side areas. 

Keywords

Moistness , Aeration rate , even drying

References

• Axtell, B., (2002) Drying Food for profit: A Guide for Small Business. 1st ed. London, UK: Intermediate Technology Development Group Publishing, Ltd.
• Bola, F.A., Bukola, A.F., Olanrewaju, I.S., (2013) Design parameter for a small –scale batch in bin maize dryer. Journal of Agricultural Sciences Vol.4, No. 5B, 90-95.
• Brooker, B. D., Bakker-Arkema, W. F., and Hall, W. C., (1992) Drying and Storage of Grains and Oilseed. New York, Van Nostrand Reinhold.
• FAO. (2002) FAO rice information, Food and Agriculture Organization of the United Nations Rome, Vol.3 December 2002.
• Hall, C.W., (1980) Drying and storage of agricultural crops. AVI, Westport, CT infestation by Rhyzopertha dominica using X-ray imaging. Journal of Stored Products Research 40, 507-516.
• Hanif, K.M., Ramzan, Muhammad and Khan, M.A., (2012) Development and evaluation of a flat plate solar collector designed for drying grain, Khyber Pakhtunkhwa Agriculture University Peshawar, Pakistan.
• Henderson, S. M., and Perry, R. L., (1980) Agricultural Process Engineering. John Wiley and Sons. Inc, London, pp. 303-335.
• Ichsani, D., Dyah, W.A., (2002) Design and experimental testing of a solar dryer combined with the kerosene stoves to dry fish. American Society of Agricultural and Biological Engineering, 1-3.
• Kenneth, J., Hellevang, P.E., (2013) Extension Agricultural Engineer, NDSU Extension Service North Dakota state University, Fargo, North Dakota.
• Kurtbas, I., and Turgut. E., (2006) Experimental investigation of solar air heater with free and fixed fins: Efficiency and Exergy loss. Int. J. Sci. Technol. 1(1), 75–82.
• Pakdaman, M.F., Lashkari, A., Tabrizi H.B., Hosseini, R., (2011) Performance Evaluation of a Natural-Convection Solar Air-Heater with a Rectangular-Finned Absorber Plate. Energy Conservation and Management, 52(2), 1215-1225. Ratti, C., (2001) Hot Air and Freeze-Drying of High-Value Foods: A Review. Journal of Food Engineering, Volume 49, pp. 311-319 [doi:10.1016/S0260- 8774(00)00228-4].
• Soysal, Y., Ahyhan, Z., Esxtu, O., Arikan, M.F., (2009) Intermittent microwave convective drying of red pepper: Drying kinetics, physical (color and texture) and scenery quality. Bio system engineering 103, 445-463.
• Ting, K., Shove, G.C., (1983) Daily efficiency of flat-plat solar air collector for grain drying. Sol Energy. 31(6), 605-7.
• Zomorodian, A., Zare, D., Ghasemkhani, H., (2007) Optimization and evaluation of a semi-continuous solar dryer for cereals (maize, etc.). Desalination, 209, 129-135.