International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 7, Issue:6, June, 2018

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(6): 2457-2465

Development of a Solar Copra Dryer Incorporated with Evacuated Tubes
Sai Krishna* and George Mathew
Department of Food and Agricultural Process Engineering, Kelappaji College of Agricultural Engineering and Technology, Kerala Agricultural University, Kerala, India
*Corresponding author

Kerala is the region with high humidity and comparatively low solar radiation, there is much scope of uneven and uncontrolled drying of copra. Hence, an attempt was made to develop a sophisticated and advanced forced convection solar dryer. Evacuated tube collector (ETC) was used to generate hot air and used to dry coconuts. It consists of three units: evacuated tube collector, blower and drying chamber. Coconuts (Cocos nucifera) were dried at full load condition in order to evaluate the performance of the developed solar dryer. The drying chamber temperature observed was of 70°C for safe drying of coconuts. The dryer has a mean drying capacity of 20 kg per batch, each batch took 28 h to complete drying the coconuts form initial moisture content 52.5 % to final moisture content of 7 %. The collector efficiency of the solar evacuated tube collector was 44 %, total number of tubes used were 30. Hence, better quality copra was produced in minimum time of 28 h.

Keywords: Solar Dryer, Copra, Development, Evacuated tube collector, forced convection, indirect drying

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How to cite this article:

Sai Krishna V. and George Mathew. 2018. Development of a Solar Copra Dryer Incorporated with Evacuated Tubes.Int.J.Curr.Microbiol.App.Sci. 7(6): 2457-2465. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.