RESULTS OF EXPERIMENTAL RESEARCH OF HYDRODYNAMICS OF A STATIONARY LAYER DURING FILTRATION DRYING OF RAW COTTON
Ключевые слова:cotton fiber, hydrodynamics, filtration drying, hydraulic resistance, porosity, active specific surface area of the layer.
This article presents the results of experimental researches of the hydrodynamics of a stationary layer
during filtration drying of raw cotton. At the same time, the total energy consumption for the process of filtration
drying consists of pressure losses in the stationary layer and heating of the heat agent to a predetermined
temperature. For this, it is important to establish the dependence of pressure losses in a stationary layer of wet cotton
fiber on the fictitious filtration rate of the heat agent, as an important factor determining the intensity and economic
efficiency of filtration drying. All experiments were carried out with appropriate hangings of cotton fiber, taking into
account that the natural moisture content of cotton fiber is insignificant. Experimental studies have been conducted
on filtering a thermal agent through a conditionally stationary layer of cotton fiber with different weights were
performed in the form of a functional dependence ∆Р = f (ݒ .(The results of comparing the ratio of experimentally
determined values of pressure losses in a conditionally stationary layer of cotton fiber to those theoretically
calculated as a function of the Reynolds number are presented. The absolute value of the relative error does not
exceed 14.2%, which is explained by the complex structure and spontaneity of the formation of a stationary layer of
cotton fiber, as well as the impact of the pressure drop on the height of the layer.