MATHEMATICAL MODELLING AND ESTIMATION OF EFFECTIVE MOISTURE DIFFUSIVITY AND ACTIVATION ENERGY, EXERGY ANALYSIS OF THIN LAYER DRYING OF PINEAPPLE
Journal Title: Journal of Experimental Biology and Agricultural Sciences - Year 2017, Vol 5, Issue 0
Abstract
The aim of the present study was to investigate the drying characteristics of pineapple at various temperatures of 55, 60, 65, 70 and 75 °C by keeping air velocity constant and best drying model was selected to describe the drying behaviour. Moreover, the energy requirement, exergy efficiency was also evaluated. Results of study revealed that the ascorbic acid content of dried pineapple was significantly reduced with increase in drying air temperatures. The effective moisture diffusivity, energy requirement and exergy efficiency during entire process of drying varied with the temperatures, in the range of 5.07×10-10 to 1.18×10-09 m2/s, 61.17 to 28.85 kWh/kg and 71.20 to 84.19%, respectively. The activation energy for pineapple was found to be 38.83 kJ/mol.
Authors and Affiliations
Sudharshan Reddy Ravula, Surender Reddy Munagala, Divyasree Arepally, Parabhaker Reddy Ravula, Sheshasayana Golla
Keywords
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- EP ID EP428035
- DOI 10.18006/2017.5(3).392.401
- Views 44
- Downloads 0
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