Near-equilibrium simulation of paddy drying with ambient air to predict safe storage periods | |
| Author | Duggal, Anil Kumar |
| Call Number | AIT Thesis no. 1264 |
| Subject(s) | Rice--Storage Rice--Drying |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | The dry matter decomposition of the high moisture paddy in storage was used to estimate the safe storage periods. The predicted safe storage periods for high moisture paddy corresponding to one-half to one percent dry matter decomposition compared favorably with the published experimental results in the temperature range of 15 to 25°C. A storage simulation model for paddy was developed to predict changes in moisture content and dry matter decomposition of grain due to continuous aeration with the ambient air. The storage model accounted for the changes in the physical condition of the paddy as influenced by the factors such as air flow rate, initial moisture content and depth of the grain, and the prevailing weather conditions. Selected results based on the prediction model are presented for the drying of paddy in the moisture content range of 20 to 28 percent wet basis with air flow rates varying from 1.0 to 10.0 cfm/ft2. Experimental moisture removal rates in a 2-feet deep bed of paddy with an air flow rate of 10.3 cfm/ft2 were slower than the predicted moisture removal rates based on the simulation model. However, the predicted and experimental moisture removal rates agreed reasonably when a correction factor, varying linearly along the grain depth, was assumed and incorporated into the storage model to slow down the moisture removal rates. |
| Year | 1978 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Jindal, Vinod Kumar |
| Examination Committee(s) | Singh, Gajendra ; Nguyen, Cong Thanh |
| Scholarship Donor(s) | Government of Thailand (King's Scholarship) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1978 |