ESTIMATION OF THERMOPHYSICAL PROPERTIES OF FAR-INFRARED VACUUM DRYING POTATO BY APPLICATION OF INVERSE APPROACH

Citation APA 7:
Mitrevski, V., Dedinac, A., & Mitrevska, C. (2021). Estimation of thermophysical properties of far-infrared vacuum drying potato by application of inverse approach. Thermal Science, 25(1B), 603–611.

Citation Harvard:
Mitrevski, V., Dedinac, A. and Mitrevska, C. (2021) ‘Estimation of thermophysical properties of far-infrared vacuum drying potato by application of inverse approach’, Thermal Science, 25(1B), pp. 603–611.

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1.5.2021 12:10

Citation APA 7:
Mitrevski, V., Dedinac, A., & Mitrevska, C. (2021). Estimation of thermophysical properties of far-infrared vacuum drying potato by application of inverse approach. Thermal Science, 25(1B), 603–611.

Citation Harvard:
Mitrevski, V., Dedinac, A. and Mitrevska, C. (2021) ‘Estimation of thermophysical properties of far-infrared vacuum drying potato by application of inverse approach’, Thermal Science, 25(1B), pp. 603–611.

Abstract

This paper investigates the estimation of moisture diffusivity and other thermophysical properties of far-infrared vacuum-dried potato slices using an inverse approach. A mathematical model for drying shrinking bodies was applied to the direct problem, while the inverse problem was solved using the Levenberg–Marquardt method. The influence of vacuum pressure, heater temperature, sample dimensions and drying time was analysed using the D-optimum criterion. The estimated moisture-diffusivity values ranged from 5.14×10−85.14 times 10^{-8} to 5.01×10−9 m2/s5.01 times 10^{-9},text{m}^2/text{s}. Experimental temperature and moisture-content changes were compared with the numerically calculated results.

Keywords:

moisture diffusivity; inverse approach; potato; far-infrared vacuum drying.