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标题：Performance Testing and Evaluation of On-FarmMobile Paddy Dryer
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作者：N. Sreedhar Reddy ; Y. Prem Santhi ; K. Ramya Sree 等
期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2018
卷号：28
期号：1
页码：1-9
语种：English
出版社：Sciencedomain International
摘要：Efficient drying from any mobile paddy dryer would result in the superior quality of the product within a desirable time. Dryer was evaluated using 5332.5 kg of freshly harvested paddy at 21.01% moisture content (w.b). The air velocity at top layer was found to vary from 0.50 to 0.33 m/s at loading condition and 1.7 to 0.6 m/s at no-load condition. The moisture content, the coefficient of uniformity (Cu) and moisture ratio at bottom of the drying chamber were observed to vary from 21.03 to 13.44% (w.b), 91.47 to 98.32%, and 0.928 to 0.085 respectively during the start to the end of the drying. The temperature of the drying chamber at bottom and top layers were found to vary from 35.57 to 32.47°C and 40.63 to 32.47°C, respectively. The relative humidity values at the bottom and top layers were 95.87 to 94.27% and 72.40 to 93.43%, respectively during drying. At the end of drying after 4.5 h, the final moisture was estimated to be 15.23% (w.b). The thermal efficiency, heat utilization factor and effective heat efficiency were calculated to be about 58.5%, 0.99 and 0.89, respectively. The total power requirement was assumed to be 15 kW. The cost of drying was found to be Rs. 943 /h and Rs. 0.79 /kg of paddy.
关键词：Plenum;centrifugal blower;drying chamber;discharge sprouts;thermal efficiency