ACOUSTOCONVECTIVE DRYING OF CELLULAR GAS CONCRETE

The present paper is devoted to the investigation of the gas dynamics of cellular gas concrete by the acoustoconvective method developed at the ITPM of the Siberian Branch of the Russian Academy of Sciences and its comparison with traditional thermoconvective and natural drying. A series of experiments have been performed on humidifying specimens and the dependence has been obtained of the rate of moisture absorption for two humidifying regimes: capillary impregnation and sorption. In the acoustoconvective drying regime, it has been shown that the frequency and intensity of the operating fl ow strongly infl uence the dynamics of moisture extraction from the specimens being dried. The obtained kinetic data for thermoconvective drying have a bilinear distribution, and their mathematical treatment permitted determining the velocities of the proceeding processes. The process of natural drying is extremely slow, and the drying velocity is strongly infl uenced thereby by the environment parameters. For mathematical description of the obtained experimental data, a relaxation model was used, which has made it possible to determine the relaxation time for each drying regime.
   
Author:  A. A. Zhilin and A. V. Fedorov
Keywords:  acoustoconvective drying, drying of cellular gas concrete, comparison of acoustoconvective and thermoconvective drying, relaxation time
Page:  1412