Experimental studies and mathematical simulation of intermittent infrared and convective drying of sweet potato (Ipomoea batatas L.)

Onwude, Daniel I. and Hashim, Norhashila and Abdan, Khalina and Janius, Rimfel and Chen, Guangnan (2019) Experimental studies and mathematical simulation of intermittent infrared and convective drying of sweet potato (Ipomoea batatas L.). Food and Bioproducts Processing, 114. pp. 163-174. ISSN 0960-3085

Abstract

Intermittent infrared and convective drying (IIRCD) is a novel drying method that can enhance energy efficiency and quality of dried product. The mechanism of drying using this method is not yet fully understood. Mathematical models that describe the drying process of IIRCD for agricultural crops do not exist. In this study, a physics based mathematical model was developed to understand the mechanism of drying sweet potato using IIRCD. The model was based on shrinkage dependent diffusivity and evaporation phenomenon. COMSOL Multiphysics finite element software was employed for the model simulation. The simulation results of moisture and temperature distribution were validated by experimental drying data. The results fitted closely with experimental data. Drying of sweet potato using IIRCD was found to be more efficient in terms of final product quality compared to convective hot-air drying method.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Agricultural Engineering
Date Deposited: 23 May 2019 00:38
Last Modified: 13 Jun 2019 02:23
Uncontrolled Keywords: physics-based model, modelling and simulation, quality of dried products, intermittent infrared and hot-air drying, Novel drying method, sweet potato
Fields of Research : 09 Engineering > 0999 Other Engineering > 099901 Agricultural Engineering
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8203 Industrial Crops > 820399 Industrial Crops not elsewhere classified
Identification Number or DOI: 10.1016/j.fbp.2018.12.006
URI: http://eprints.usq.edu.au/id/eprint/35356

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