Abstract

This article presents experimental results of convective drying of capillary-porous material carried out in intermittent and also in stationary conditions for comparison. The aim of these studies is to justify that intermittent drying can be more propitious from the point of view of material quality than the stationary one. The experiments were carried out on cylindrically shaped samples made of kaolin. Intermittent drying was accomplished by periodic changes of the drying medium (air) temperature and humidity. It was shown that drying rate in periodically changing conditions is located between those obtained in stationary drying at the upper and the lower parameters of the periodically changing drying parameters. The quality of the material looks much better when dried in intermittent than in stationary conditions.

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