Abstract
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 householdproducts. The movement of a gas stream through a porous structure of a material is a mixed problem ofhydrodynamics. However, there are no theoretical foundations for the mixed hydrodynamic problem today. In thisarticle, we propose the use of a filtration method for drying raw cotton and calculating the hydraulic resistance. Todescribe the hydrodynamics of gas movement through the porous structure of the material in scientific articles, theauthors use theoretical dependencies of internal or external problems. Given that the intensity of heat and masstransfer determines the speed of movement of the heat agent relative to the elements of the porous layer, this paperpresents the results of studies of pressure losses in the layer of cotton fiber from the point of view of the internalproblem of hydrodynamics. Experimental studies on filtration of a heat agent through a stationary layer of cottonwere conducted. due to the difference in bulk weight and different heights of the layer, they were represented as afunctional dependence ∆Р= f(ݒ .(The results obtained in dimensionless form allow us to predict the energy costs ofcreating a pressure drop (under the same hydrodynamic conditions) when designing a new drying equipment.
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