Heat and mass exchange of phase environments in the thickness of the layes grain of the dryer

Abstract

In the well-known technologies of domestic and foreign dryers, the influence of the actual pressure of the gas medium in the grain layer is either ignored or partially taken into account. Inaccuracies are attributed to errors in the drying process. However, the aerodynamic resistance factor is significant for a layer of loose materials of different thickness and mobility. It affects the moisture-absorbing capacity of working gases, and therefore the driving potential of interphase moisture exchange. We investigated the deviations of the calculated values of the driving potential from the actual values on the bench. For the possibility of checking the correctness of comparisons of theoretical and experimental data by the general public of scientists, below we present the calculation formulas we used on the influence of the aerodynamic resistance of the dewatered layer of bodies and the gradient of the flow of drying gases.