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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)


Article Title: Studies on the Drying Tendency of Parabolic Concentrator Dryer on Vegetables, Roots and Tubers
by Adesina, K.A., Komolafe, E.A., Badejo, O.F.

The tendency of parabolic concentrator dryer over improved sun drying was investigated. The studies was carried out during the raining season, July, between 12 noon and 5pm using fresh tatase pepper (Capsicum annum), cassava chip (Manihot esculenta crantz) and yam (Dioscorea spp).. The daily and overall drying tendencies of the dryers were based on the percentage moisture dried obtained by sample weight difference. Drying curve obtained by parabolic concentrator for tatase and yam agreed with the drying curve obtained by Bala et al., 2003 and Prachayawarakorn et al., 2008 while a slightly deviated curve was found with sun drying except for cassava chip. Parabolic concentrator method gave the drying efficiency of 66.66%, 33.33%, 50%, 33.33% for tatase, 25%, 28.6%, 50% for cassava and 68%, 44%, 44% for yam. Sun drying method gave 23.33%, 59.09%, 33.33%, 20% for tatase, 50%, 53.3% and 26% for cassava and 70%, 54%, 11% for yam per drying days. Overall efficiency of 93.33%, 87.5%, 98.9% was obtained by parabolic concentrator dryer while sun drying gave 86.66%, 93.8% and 91% for tatase, cassava and yam respectively. The drying temperature profile shows that parabolic concentrator was higher than sun drying profile. These trends revealed that parabolic concentrator dryer has high tendency to dry vegetables and tubers.
Keywords: parabolic concentrator, sun drying, drying tendency, butterfly design, moisture dried
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom



Copyright © Journal of Emerging Trends in Engineering and Applied Sciences 2010