Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/14241
ชื่อเรื่อง: Drying of High-Moisture Paddy Using a Combined Impinging Stream and Pneumatic Drying System
ผู้แต่ง: Nimmol C.
Sathapornprasath K.
Devahastin S.
Keywords: Head rice yield
Residence time
Specific energy consumption
Volumetric heat transfer coefficients
Water evaporation
Whiteness
Dryers (equipment)
Energy efficiency
Energy utilization
Evaporation
Flow rate
Heat transfer coefficients
Moisture
Phase transitions
Pneumatics
Thermal load
Drying
วันที่เผยแพร่: 2012
บทคัดย่อ: A system combining the principles of impinging stream drying and pneumatic drying (ISD-PD) for high-moisture paddy was developed to increase the energy efficiency of the drying process. The effects of inlet air temperature and paddy feed flow rate on the overall performance, in terms of the volumetric water evaporation rate and volumetric heat transfer coefficient, and energy consumption of the system were then investigated. The dried paddy quality in terms of the head rice yield and whiteness was also assessed. The results were compared with those obtained from a system consisting only of a pneumatic dryer. It was found that an increase in the inlet air temperature and paddy feed flow rate led to an increase in the volumetric water evaporation rate. The volumetric heat transfer coefficient varied insignificantly with the inlet air temperature but increased with the paddy feed flow rate. The moisture content of paddy was reduced from its original value by 6.6 to 9.7% (db) within a very short period of time. The mean residence time of the paddy was increased by 33 to 41% via the use of the ISD-PD system, leading to moisture reduction rates 55-166% higher than those for the pneumatic dryer. The head rice yield decreased with an increase in the inlet air temperature and paddy feed flow rate. On the other hand, the effects of inlet air temperature and paddy feed flow rate on whiteness was not significant. © 2012 Copyright Taylor and Francis Group, LLC.
URI: https://ir.swu.ac.th/jspui/handle/123456789/14241
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84869802663&doi=10.1080%2f07373937.2012.713070&partnerID=40&md5=8bf5ce29c8a6af118e5ce6556289d127
ISSN: 7373937
Appears in Collections:Scopus 1983-2021

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