Abstract
Drying is one of the most energy-intensive industrial processes. One of the techniques aiming to reduce energy consumption is the vibration technique which is generally employed to intensify the heat and mass transfer process. In this respect, this paper presents a three-dimensional numerical model to study the external vibration effects on the drying process of a porous medium. The model is based on a comparison of heat and mass transfer phenomena that arise during vibrating drying of unsaturated porous medium for two cases: triangular and sinusoidal external vibrations. The three-dimensional unstructured Control Volume Finite Element Method (CVFEM) is employed to simulate the vibrating drying. Numerical results of the time evolution of temperature, liquid saturation, pressure, and water content are compared and analyzed for the two cases.
Highlights
IntroductionThe problem of intensification of heat and mass transfer in porous media has attracted considerable attention over the last years
The problem of intensification of heat and mass transfer in porous media has attracted considerable attention over the last years. This interest has been motivated by a large domain of industrial applications, including food, wood, paper, building, ceramic, etc
For many years research has been interested in heat and mass transfer during the drying process which is one of the oldest processes in porous media, characterized by coupled heat and mass transfer phenomena
Summary
The problem of intensification of heat and mass transfer in porous media has attracted considerable attention over the last years. This interest has been motivated by a large domain of industrial applications, including food, wood, paper, building, ceramic, etc. To solve this problem, more efficient technologies have been employed. The vibration phenomenon has been found to enhance heat and mass transfer process and to improve systems efficiency. The consumption of high quantity of energy during porous solids drying has made it an interesting subject in scientific and technological range with a variety of industrial applications. Research focuses on the employment of more efficient technologies to intensify the drying process [1]
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