Study on using a Solar Greenhouse Dryer Model for Drying Rubber Sheets with a Protective Ultraviolet and Thermal Control in Greenhouse Dryer
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Abstract
This research was studied on using the solar greenhouse dryer model to dry rubber sheets. This model was designed in cubic shape which had dimension of 1.00 × 1.00 × 1.00 m (w x l x h). Walls on all sides were made from the transparent polycarbonate with an anti-UV 100%. Three fans power of 0.125 kW electric-motor were used to ventilate the air humidity and control the temperature inside the dryer not to exceed 45 oC. These fans were automatically operated by an on-off control device to maintain the set temperature. The drying performance test was conducted with 4 rubber sheets for a time drying. Test results showed that the rubber sheet’s moisture content was reduced from the initial 30% w.b. down to 2.5% w.b. at temperature in dryer less than 45oC and the UV zero, which takes the time for drying 4-5 days. The quality of the dried rubber sheets were better benchmark in both color and elastic features.
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