Thermal Behavior Assessment of an Electric and a Solar Dryer
摘要
Drying is an ancient technique used to preserve various food products for long periods, reducing their mass and facilitating storage. Drying techniques differ according to needs and available resources. However, electric and solar drying are among the most widely used techniques. In this context, an investigation into the effect of integrating an electrical resistor in the drying chamber has been carried out in this work. Before implementing the experimental protocol, the determination of the appropriate position of the resistor in the drying chamber is based on a numerical optimization performed by the CFD method. The experimental tests were carried out in the mechanics and energy laboratory at the technopole research center in the eastern region of Oujda, Morocco. The results obtained show that the use of electrical resistance provides stable thermal behavior in the drying chamber and, consequently, on the drying trays. In contrast, the thermal behavior of solar drying systems depends on climatic conditions during the day, resulting in unstable behavior.