การพัฒนากระบวนลดความชื้นข้าวกล้องงอกด้วยเครื่องอบแห้งแบบถังหมุนโดยใช้รังสีอินฟราเรดร่วมกับลมร้อน
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Abstract
The objective of this research is to development of drying process germinated brown rice with rotary dryer using infrared ray combine hot air. The rotary drum has a length of 4.8 meters and a diameter of 0.8 meters. The moisture reduction process is divided into two steps: the first step involves using infrared radiation, fueled by LPG, and the second step involves using hot air generated from the combustion of the infrared burner. The experiment uses paddy rice of the Khao Dawk Mali 105 variety, Feed rate was about 350 kg/hr. The infrared radiation wavelengths used in the experiment are 2.58, 2.83, and 3.14 micrometers, and the drying process is conducted over 1, 2, and 3 cycles. The results show that the moisture content can be reduced from 34.47, 35.69, and 33.48 % wb. To 22.17, 27.05, and 27.42% wb. After three drying cycles. Additionally, it was found that at an infrared wavelength of 2.58 micrometers, the germinated brown rice had a lower breakage rate compared to other wavelengths, with a breakage percentage of only 1.81 %, and maintained good quality. The analysis of specific heat energy consumption indicated that the infrared wavelength of 2.58 micrometers required higher heat energy compared to other wavelengths.
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References
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