Study The Drying Kinetic Of Food Products By Using Solar Dryer And Open Sun Drying

Mohd Isa, Muhammad Syamim (2021) Study The Drying Kinetic Of Food Products By Using Solar Dryer And Open Sun Drying. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Open sun Drying is one of the oldest preservation processes that still be used until now. However, this way of drying degrades the quality of the dried products due to exposed to dust and pests. Open sun drying had only sun as the source of the energy. Nowadays, many types of solar dryers were produced. Based on a review of literature on the solar drying, there are three types of solar dryers which are direct solar dryers, indirect solar dryers and mixed mode dryers. Although it was said that solar dryer was better than open sun dryer, evidence is needed to prove it. In this report, the drying kinetics of food was investigated in a solar dryer and under open sun dryer. The solar dryer used was mixed mode solar dryer. The mixed mode solar dryer dries the product by direct radiation through transparent cabinet walls and by air heated from solar collectors. Both data for drying product are recorded for each 15 minute. The drying data fitted into different mathematical models of the drying curves. The performance of these models was investigated by comparing the coefficient of determination (R2), reduced chi-square(X2) and root mean square error (RMSE) between the observed and predicted moisture ratio. The mathematical model of drying curves used to get the value of predicted moisture ratio. The best model for both drying process had the highest value of coefficient of determination (R2) and lowest value of reduced chi-square(X2) and root mean square error (RMSE).

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