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008 110908s1982 th uu|m rtt 0| a1eng d
035 _a.b10072214
099 9 _aAIT Thesis no. AE-82-17
100 1 _aSolis, Norman Tolentino
245 1 3 _aAn economic comparison of paddy drying in shallow beds using natural and heated air
260 _aBangkok :
_bAsian Institute of Technology,
_c1982
300 _a77 p.
490 1 _aThesis ;
_vno. AE-82-17
500 _aA thesis submitted in partial fulfilment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1982
520 _aA series of paddy drying tests were conducted in a flat bed dryer using heated and unheated-air to compare the drying costs, moisture removal rates and the milling quality. The grain depth was 0.30 meter and the airflow rates were 7.64 and 9.16 cubic meter-min/square meter. A temperature of 43.0°c was maintained in the heated-air drying tests. The initial moisture contents of the paddy were 20.0 and 22.0% wet basis. The experimental and the simulated moisture removal rates in heated-air and unheated-air were in good agreement statistically showing that the drying models could be effectively used in the economic analysis. The heated-air drying was more economical than unheated-air drying due to the extended period of drying needed with unheated-air. It was found that a 3-horsepower engine would give the m1n1mum drying costs for the unheated-air, but heated-air drying costs always increased with increase in engine horsepower, The ratio of the unheated-air to heated-air drying cost varied in the range 2:1 to 3:1 depending on the engine horsepower applied. The quality of the paddy dried with unheated-air was significantly better than the quality of paddy obtained in the heated-air tests. However, the possible premium due to improvement of the quality dried with unheated-air was not included in the economic analysis due to the uncertainties in the present marketing practices in the Philippines.
650 0 _aRice
_xDrying
_xEconomic aspects
700 1 _aJindal, Vinod Kumar,
_eChairperson
700 1 _aVokes, Richard W. A.,
_eExamination Committee
700 1 _aExell, Robert H.B.,
_eExamination Committee
710 2 _aThe ASEAN-USAID,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. AE-82-17
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B21140
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