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Effectiveness of using acoustic oscillations of ultrasonic frequency on the process of removing moisture from porous material
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Effectiveness of using acoustic oscillations of ultrasonic frequency on the process of removing moisture from porous material
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Journal Article
Effectiveness of using acoustic oscillations of ultrasonic frequency on the process of removing moisture from porous material
2023
Overview
The article presents the results of a study of the ultrasonic drying process which is a promising way to intensify the process of moisture removal at low temperatures. An experimental stand was developed for the research. The stand is an ultrasonic dryer with automatic maintenance of the set temperature. A flexural-oscillating disk radiator was used as a source of ultrasonic action. The conducted studies have shown that changing the speed of the drying agent from 0.1 m/s to 0.2 m/s during convective drying can slightly reduce the drying time from 100 minutes to 90 minutes (10%). Change of the speed of the drying agent from 0.1 m/s to 0.2 m/s allows reducing the drying time by 10 minutes, from 80 minutes to 70 minutes with ultrasonic action. Due to the ultrasonic exposure at a drying agent speed of 0.2 m/s, the drying time is reduced from 90 minutes to 70 minutes. At a drying agent temperature of 400C, the drying time is reduced by 25% due to ultrasonic exposure (from 160 minutes to 120 minutes).
Publisher
EDP Sciences
Subject
