ESTIMATION OF OVERALL HEAT TRANSFER COEFFICIENT AND EFFECTIVENESS IN A DOUBLE PIPE HEAT EXCHANGER OF A FOOD DRYING SYSTEM

Abstract: The study explores the design and evaluation of the heat transfer parameters of a food drying system using waste heat. The system uses engine exhaust gas to preheat air, reducing energy consumption. The system was modeled using CATIA and Computational Fluid Dynamics (CFD) simulations using ANSYS Fluent. Mesh convergence studies ensured accuracy. The study found that the heat recovery system significantly improved the heat transfer rate of the drying process. Heat transfer utilization was quantified, revealing that the system could lower energy requirements, reduce operational costs, and improve sustainability. Implementing such systems also contributes to reducing carbon emissions and mitigating global warming. The obtained outcomes reveal a significant agreement between the conclusions drawn from the analytical and numerical methodologies.

Keywords: Food Dryer, Heat Exchanger, ANSYS 15, Waste heat.