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Abstract
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Article Information:
Effect of Selected Factors on Drying Process of Tomato in Forced Convection Solar Energy Dryer
M. Isiaka, A.M.I. El-Okene and U.S. Muhammed
Corresponding Author: Moshudi Isiaka
Submitted: February 10, 2012
Accepted: March 16, 2012
Published: October 01, 2012 |
Abstract:
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The effect of air velocity, slice thickness and grazing materials in drying process of tomato in forced
convection solar energy dryer was evaluated. The result is to serve as an input for solar energy development
for drying of vegetable and fruit products in North West Ecological zone of Nigeria. In order to evaluate the
effects of the above factors in drying operation, a split-split-plot experimental design was used. Differences
among the treatments and their interactions were tested with orthogonal contrast test to access their significance
while further analysis were done to compare all possible pairs of treatment means using Duncan’s Multiple
Range Test (DMRT). The results showed that there is no significant difference, at 95% probability level,
between the means of the three glazing materials used. However, the variations in mean slice thickness and in
mean air flow rate are highly significant at 99% probability level. The results further revealed that drying rate
increasing with decrease in slice thickness and increase in air flow rate. Drying of 15, 20 and 25 mm slice
thickness of tomato was achieved in time range of 21-24, 27-29 and 30-50 h, respectively.
Key words: Air flow rate, drying time, glazing, slice thickness, solar dryer, tomato,
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Cite this Reference:
M. Isiaka, A.M.I. El-Okene and U.S. Muhammed, . Effect of Selected Factors on Drying Process of Tomato in Forced Convection Solar Energy Dryer . Research Journal of Applied Sciences, Engineering and Technology, (19): 3637-3640.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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