Experimental and numerical studies of heat transfer and kinetic drying of convection pneumatic dryer

Abstract

This paper presents the results of research which can be useful in designing and construction of such dryers in food industry. It refers to the technological and technical characteristics of the dryer, energy balances, coefficients of heat transfer and kinetic drying. The accomplishment of heat transfer in these systems is based on the principle of direct contact of dried material and warm air. Then an intensive transfer of heat and mass is accomplished. Experimental and theoretical research was conducted and the results were implemented in real industrial environment on convection dryer with pneumatic transport of material. The numeric values are given for optimum parameters of drying, energy characteristics and balances as well as the models of heat transfer. © Faculty of Mechanical Engineering, Belgrade.