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Title: Mathematical modelling for low temperature batch drying of paddy using fluidised bed technology

Authors: Binayak Pattanayak; Siba Shankar Mohapatra; Harish Chandra Das

Addresses: Department of Mechanical Engineering, Siksha 'O' Anusandhan, Deemed to be University, Bhubaneswar, 751030, India ' Department of Mechanical Engineering, Siksha 'O' Anusandhan, Deemed to be University, Bhubaneswar, 751030, India ' Department of Mechanical Engineering, National Institute of Technology, Meghalaya, 793003, India

Abstract: Rice is considered as the major staple food throughout India. Drying is one of the major alternatives available for proper storage of rice. The drying process can be suitably represented by many mathematical models. In this study 10 different mathematical models are chosen for describing the mathematical behaviour of drying. The experimental data obtained from the drying of raw rice at different temperatures, drying air velocity and relative humidity are fitted with the chosen mathematical models. The best suitable model to describe the drying behaviour of raw rice is determined by non-linear regression analysis. The statistical indicators Correlation coefficient (R2), root mean square error (RMSE) and sum of squares due to error (SSE) showed that Midilli et al. (2002) model is suitable model for all operating conditions. The coefficients of Midilli et al. 2002 model is also expressed as a function of drying air temperature, velocity and inventory of paddy.

Keywords: paddy; mathematical modelling; drying; correlation coefficient (R2); RMSE; root mean square error; SSE; sum of squares due to error.

DOI: 10.1504/IJMMNO.2019.096919

International Journal of Mathematical Modelling and Numerical Optimisation, 2019 Vol.9 No.1, pp.89 - 103

Received: 10 Oct 2017
Accepted: 24 Feb 2018

Published online: 04 Dec 2018 *

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