Drying of Polymeric and Solid Materials: Modelling and Industrial Applications [Paperback]

Drying of Polymeric and Solid Materials shows for the first time how the process of drying can be enhanced by combining mathematical and numerical models with experiments. The main advantages of this method are a significant saving of time and money. Numerical modelling can predict the kinetics of drying and the profiles of liquid concentration through the solid. This helps in the selection of optimal operational conditions. The simulation of the process is also crucial in the assessment of diffusity and the rate of evaporation.Drying of Polymeric and Solid Materials shows for the first time how the process of drying can be enhanced by combining mathematical and numerical models with experiments. The main advantages of this method are a significant saving of time and money. Numerical modelling can predict the kinetics of drying and the profiles of liquid concentration through the solid. This helps in the selection of optimal operational conditions. The simulation of the process is also crucial in the assessment of diffusity and the rate of evaporation.1 Principles and General Equations.- 1.1 Transport of Liquid Through a Solid.- 1.1.1 Polymers.- 1.1.2 Wood Materials.- 1.1.3 Basic Equations of Diffusion (Ficks Laws).- 1.2 Evaporation of Liquid from the Surface.- 1.2.1 Infinite Rate of Evaporation.- 1.2.2 Finite Rate of Evaporation.- 1.3 Diffusion of Vapour Outside the Solid.- 1.4 Effect of Parameters.- 1.4.1 Dimensions of the Grain.- 1.4.2 Nature of the Solid and Liquid.- 1.4.3 Shape of the Solid.- 1.4.4 Surrounding Atmosphere.- 1.4.5 Temperature.- 1.5 General Equations.- 1.5.1 Operational Conditions.- 1.5.2 Differential Equation of Diffusion.- 1.5.3 Equation of Evaporation.- Symbols.- 2 Thin Plane Sheet.- 2.1 Non-steady State with Infinite Rate of Evaporation.- 2.1.1 Infinite Atmosphere with Uniform Initial Concentration of Liquid.- 2.1.2 Layer of Diffusing Substance Deposited on a Permeable Sheet.- 2.1.3 Layer of Diffusing SublS4