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JSIR Vol.67(05) [May 2008] >


Title: Comparison of drying characteristics and quality of copra obtained in a forced convection solar drier and sun drying
Authors: Mohanraj, M
Chandrasekar, P
Keywords: Copra
Heat storage materials
Solar drier
Sun drying
Issue Date: May-2008
Publisher: CSIR
Abstract: An indirect forced convection solar drier integrated with sensible heat storage material has been fabricated and tested for copra drying. It reduces moisture content (wet basis) from 52% to 7.8% and 9.5% in 66 h for trays at bottom and top respectively. System pickup efficiency varies between 45% and 13%. Copra obtained was graded as 76% milling copra grade1 (MCG1), 18% MCG2 and 6% MCG3. Specific moisture extraction rate was estimated to be 0.84 kg/kWh. In sun drying, moisture content reduced from 52.3% (wet basis) to about 9.2% in 7 days. Copra obtained was graded as 53% MCG1, 24% MCG2 and 23% MCG3. Average drier thermal efficiency of sun drying was estimated to be about 21%.
Page(s): 381-385
ISSN: 0022-4456
Source: JSIR Vol.67(05) [May 2008]

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