Open AccessThin Layer Drying Kinetics Modelling of Curry Leaves (Murraya koenigii L.) in Cabinet Dryer
Author(s) -
Arjun Ghimire,
N. G. Magar
Publication year - 2018
Publication title -
himalayan journal of science and technology/himalayan journal of science and technology
Language(s) - English
Resource type - Journals
eISSN - 2616-0234
pISSN - 2565-5132
DOI - 10.3126/hijost.v2i0.25844
Subject(s) - murraya , thermal diffusivity , activation energy , mathematics , rutaceae , logarithm , mean squared error , exponential function , coefficient of determination , thermodynamics , chemistry , materials science , botany , statistics , physics , organic chemistry , mathematical analysis , biology
Curry leaves (Murraya koenigii L.) are the sweet smelling leaves of small tree of Rutaceae family native to Southwest Asia. In this study, the effect of temperatures (50, 55 and 60°C) on the drying of curry leaves was investigated. The experimental data were fitted to six thin layer mathematical models (Newton, Page, Handerson and Pabis, logarithmic, two-term exponential and Midilli et al). The models were evaluated in terms of coefficient of determination (R2), chi square (χ2) and root mean square error (RMSE). The Midilli et al model was best fitted to the experimental data of all the models evaluated. The effective diffusivity was calculated using Fick's diffusion equation, and the value varied from 2.07×10-12 m2/s to 2.643×10-12 m2/s. The activation energy and the diffusivity constant were found to be 21.808 kJ/mol and 4.667×10-8 m2/s respectively.