CALCULATION OF HYDRAULIC RESISTANCE DURING FILTRATION DRYING OF RAW COTTON

Аннотация

Textile, non-woven and other fiber materials have a great importance in the modern world economy.
Cotton is one of the most valuable raw materials for the production of various industrial, food and household
products. The movement of a gas stream through a porous structure of a material is a mixed problem of
hydrodynamics. However, there are no theoretical foundations for the mixed hydrodynamic problem today. In this
article, we propose the use of a filtration method for drying raw cotton and calculating the hydraulic resistance. To
describe the hydrodynamics of gas movement through the porous structure of the material in scientific articles, the
authors use theoretical dependencies of internal or external problems. Given that the intensity of heat and mass
transfer determines the speed of movement of the heat agent relative to the elements of the porous layer, this paper
presents the results of studies of pressure losses in the layer of cotton fiber from the point of view of the internal
problem of hydrodynamics. Experimental studies on filtration of a heat agent through a stationary layer of cotton
were conducted. due to the difference in bulk weight and different heights of the layer, they were represented as a
functional dependence ∆Р= f(ݒ .(଴The results obtained in dimensionless form allow us to predict the energy costs of
creating a pressure drop (under the same hydrodynamic conditions) when designing a new drying equipment.