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IJSTR >> Volume 9 - Issue 6, June 2020 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Numerical Analysis of Thin Layer Drying Kinetics of Untreated Carrot Slices using Photovoltaic Thermal Solar Dryer

[Full Text]



E.Veeramanipriya, AR. Umayal Sundari, EA. Monisha



photovoltaic, hybrid dryer, mathematical modeling, untreated carrot slices, equilibrium moisture content, drying kinetics, open sun drying



The present work demonstrates the drying kinetics of untreated carrot slices using photovoltaic thermal hybrid solar dryer assisted with Evacuated Tube Collector (ETC). The moisture content of carrot is reduced from 85% to 9.3% which is considered to be a safe level in 8 hours with the designed dryer. Open sun drying takes 14 hours to reach the equilibrium moisture content. The efficiency of the designed ETC assisted solar dryer (32.26%) in drying of carrot slices is much greater than open sun drying (24.04%). Nine developed mathematical models are applied to evaluate the drying kinetics of carrot slices for both ETC assisted hybrid solar dryer and open sun drying using IBM SPSS 23 package. Results show that Midilli et al model has high value of correlation coefficient (R2) and least value of reduced chi-square and root mean square error (RMSE) for the designed ETC dryer and sun drying showing the more suitability of fit for drying of carrot slices. It is also observed that the quality and appearance of the solar dried carrot slices using ETC aided hybrid solar dryer is more acceptable than the open sun dried carrots.



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