Скачать или смотреть liquid Diffusion

CETEL is a YouTube channel titled Chemical Engineering Through E-Learning, created to share knowledge on a non-profit basis. The uploaded videos aim to provide insightful knowledge to students without any monetary intention. This video class helps learners understand the concept of Liquid Diffusion – the Mechanism of Moisture Movement in Air Drying. During air drying, moisture inside a wet solid move from the interior toward the surface mainly through liquid diffusion. This movement is driven by a concentration gradient, where regions of high moisture content push moisture toward areas with lower moisture content. Deep-seated moisture diffuses through the pores and capillaries of the solid. As drying progresses, the surface loses moisture to the surrounding air due to evaporation, which continuously reduces the surface moisture concentration. To restore equilibrium, internal moisture migrates outward to replace the evaporated layer. The rate of diffusion depends on factors such as pore structure, temperature, and the diffusivity of moisture within the solid. Liquid diffusion becomes dominant especially during the falling-rate period of drying. Thus, moisture removal is controlled primarily by the internal movement of moisture through the solid rather than by external air conditions.