Automatic Control System for Heat Retention Gel Dryers

Abstract

            This research aims to develop, a design and create a control system for solar and gel dryers The research materials are including a vertical dryer, a solar panel, a thermometer, heat retention gel and semi- automatic control cabinet that can use heat energy. The performance test shows the average heat level of the dryer using solar energy is at 38.38 ° C. When the sun set, the dryer can be operated for 5 hours at 34.40 ° C to 37.40 ° C using heat retention gel in this paper we conduct an experiment on go to peppers. Using our system, the dry basis moisture content of dried go at peppers is 45.33 % by 3 days. Meanwhile, the goat peppers dried by normal sun drying have dry basis moisture content of 22.07 % by 7 days. Accordingly, our system achieves a better drying performance comparing to dry basis moisture content standard of the conventional drying method.