Abstract

This paper presents a study on the mathematical modelling of bay (Laurus nobilis L.) leaves. Drying experiments were performed in a laboratory scale dryer constructed in the Department of Agricultural Machinery, Faculty of Agriculture, Ege University, Izmir, Turkey. The leaves were 90–100 mm long and 30–40 mm wide, and ones with no blemish were selected and used for the drying tests. The tests were performed with various relative humidities (5%, 15% and 25%) and temperatures (40, 50 and 60 °C) at a constant air velocity of 1.5 m/s. Fifteen different mathematical drying models were compared based on their correlation coefficient, root mean square error, mean bias error, reduced chi-square and t-statistic method to estimate the drying curves. It may be concluded that the Page model could sufficiently describe drying of bay leaves.

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