Driving potential of gases in the grains layer

Abstract

In the calculations of heat and mass transfer of phase media should take into account the aerodynamic resistance of the grain layer. For production parameters of grain drying in mine direct-flow dryers, temperature is a more influential factor influencing the density and specific volume of working gases. Unlike liquids, the dynamic viscosity of gases increases, and the kinematic (m2/s) decreases to 11% for the parameters of the pressure in the mine grain dryer and for the parameters of the environment "summer-winter" - up to 30%. The coefficient of proportionality in the calculations of the coefficient of diffusion of moisture in the body of the grain according to our research is more than twice different from the widely used.