Mosiuk M. Hydrodynamics, heat and mass transfer during the drying process of a comminuted "energy" willow in a stationary layer

This thesis presents research on the filtration drying process of comminuted "energy" willow in the stationary layer. The method of defining the equivalent diameter of channels between particles of irregular shape and fibrous structure has been suggested. Based on the theoretical and experimental researches into a hydrodynamic movement of a heat agent through the layer with a porous structure, criteria dependencies, which respond to losses of pressure in the layer of a material, have been proposed. Criteria dependencies in the form of dimensionless complexes has been obtained with the aim to calculate heat and mass emission coefficients for both dry and moist layers of the material. In this respect, the present research also presents a mathematical model for predicting the coefficient of moisture diffusion through cylinder-like particles into the environment. The model has been shown to be reasonable within a wide temperature range of a heat agent.