Proceedings of the Korean Society for Agricultural Machinery Conference (한국농업기계학회:학술대회논문집)

Korean Society for Agricultural Machinery (한국농업기계학회)
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DEVELOPMENT OF A GRAIN CIRCULATING TYPE NATURAL AIR IN-BIN DRYER

  • Yun, H.S. (National Agricultural Mechanization Research Institute) ;
  • Chung, H. (National Agricultural Mechanization Research Institut) ;
  • Cho, Y.G. (National Agricultural Mechanization Research Institut) ;
  • Park, W.K. (National Agricultural Mechanization Research Institute)
  • Published : 2000.11.01
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Abstract

A natural air in-bin grain dryer with a grain circulator was developed for on farm use. Natural air drying test for rough rice was carried out to evaluate drying rate, uniformity of moisture content distribution in grain bed and energy consumption. It took 10 days to dry 8 ton of paddy rice from 21.9%(w.b) to 16.7%(w.b) moisture contents using the prototype dryer. The average drying rate was 0.52%/day. The uniformity of moisture content after drying was superior to the conventional natural air dryer where is grains were not circulated during drying periods. The dryer performance evaluation index was 738.3KJ/(kg.water), which was more effective than that of grain circulation t)pe hot air dryer(3,500-5,000 KJ/kg.water).

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