03312nam a2200397 4500 20260818114133.0 130598 th eng .b11699000 AIT Thesis no.AE-96-35 Somnuek Supawaropas The fluidized bed drying of paddy in two stages Bangkok : Asian Institute of Technology, 1996 64 leaves + 1 online resource Thesis ; no. AE-96-35 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1996 A model of fluidized-bed type dryer was constructed and tested for its performance characteristics. Tests were carried out to study fluidized-bed drying of paddy in two stages and associated changes in its quality in terms of head rice yield and whiteness of milled rice. Drying air temperatures ranged from 55 to 150 °C in first-stage drying and from 60 to 80 °C in the second stage drying tests. The moisture removal during both first and second stage drying of paddy was best represented by the modified logarithmic model. It was found that air temperature in the range of 105 to 135 °C can be used in first stage drying of paddy with initial moisture content of 26% wb for exposure time less than three minute without causing appreciable change in head rice yield or whiteness ratio. However, the most suitable drying air temperature was determined to be 95 °C in first stage drying to reduce the initial moisture content of paddy from 26% wb to about 18% wb in 2.5 minutes. Air temperatures of 60 to 70 °C could be used in second stage to further reduce the moisture to 14.5% wb in about 4 to 6 minutes. Tempering of grain for four hours was allowed in between the two stages of drying. The fluidized-bed drying of paddy using high air temperatures results in an probably due to the partial gelatinization of starch in rice kernels. However, the head rice yield decreased with exposure time both in first and second stage drying tests. It was found that the paddy drying process in a fluidized-bed required careful monitoring to prevent the deterioration of grain quality parameters such as head rice yield and whiteness of the milled rice. Rice Drying Fluidization Jindal, Vinod Kumar, Chairperson Athapol Noomhorm, Examination Committee Vincent, Jean-Claude, Examination committee Queen Sirikit Scholarship, Scholarship donor Asian Institute of Technology. Thesis ; no. AE-96-35 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B14586 .b11699000 mnait y 240403 0 980319 m a y 4 mnait mnarc 22 40 Barcode : 30050120577381 CREATED : 2013-11-22 RECORD # : i12748717 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120372486 CREATED : 2016-02-06 RECORD # : i13011406 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 45937 45937 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.AE-96-35 30050120577381 2026-08-18 11:41:33 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.AE-96-35 30050120372486 2026-08-18 11:41:33 2026-08-18 40