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Title: | Development of an intermittent solar dryer for cocoa beans |
Authors: | Fagunwa, Ayokunle O. Koya, Olufemi A. Faborode, Micheal O. |
Keywords: | Intermittent dryer Solar dryer Cocoa beans Sun-drying Dehydration Nigeria |
Issue Date: | 15-Jul-2009 |
Publisher: | Agricultural Engineering International: CIGR Journal |
Citation: | Fagunwa, A. O., Koya, O. A., & Faborode, M. O. (2009). Development of an intermittent solar dryer for cocoa beans. Agricultural Engineering International: CIGR Journal. |
Abstract: | A solar dryer with thermal energy storage was developed for intermittent drying of cocoa beans. The prototype was built using readily available local materials. Drying mechanism was based on a combination of convective heating and direct radiation, with a provision for controlling the rate of airflow through the beans. The experimental model dehydrated cocoa beans from 53.4 to 3.6% moisture content (wb) in a 72 hours inter-mittent drying process against ambient temperature and relative humidity in the range 25-30 o C and 58-98%, respectively. Quality assessment of the dried beans showed that beans of good quality attributes: pH of 6.35, acid value of 3.40 mg/g, with mildly bitter taste were obtained under free convective drying; whilst, increase in moisture re-absorption and acidic flavour were indicated with forced convective drying. The work, thus, provides a viable system for producing cocoa beans of good quality attributes, comparable with using the traditional sun-drying, but without the associated drudgery. |
URI: | http://repository.elizadeuniversity.edu.ng/jspui/handle/20.500.12398/404 |
Appears in Collections: | Research Articles |
Files in This Item:
File | Description | Size | Format | |
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Development of an Intermittent Solar Dryer for Cocoa Beans.pdf | Article full-text | 280.83 kB | Adobe PDF | View/Open |
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