DocumentCode :
3111463
Title :
Preliminary study on method of vacuum drying
Author :
Li, Fan ; Peng, Yiqing ; He, Zhengbin ; Yi, Songlin
Author_Institution :
Coll. of Mater. Sci. & Technol., Beijing Forestry Univ., Beijing, China
fYear :
2011
fDate :
26-28 March 2011
Firstpage :
1176
Lastpage :
1178
Abstract :
Chinese fir was taken as specimen in this paper. Firstly, specimens were preheated to 80°C, and then the pressure in the drying box was vacuumized to the needed vacuum degree (absolute pressures were 0.06, 0.04 and 0.02MPa respectively), finally, pressure in the drying box was recovered to the atmospheric pressure by vapor from wood during drying period. The results indicated that the drying rates increased along with the decrease of the absolute pressure and the drying rates were 2.19, 2.39, 2.46 (%/h) when the absolute pressures were 0.06, 0.04, 0.02MPa respectively. Then, the drying rates equations under the conditions of temperature being 80°C and absolute pressures being 0.06, 0.04, 0.02MPa respectively were regressed and the results also showed that it was better to use low pressure when wood moisture content was high while better to use high pressure during drying wood with low moisture content.
Keywords :
drying; wood; wood processing; Chinese fir; drying box; pressure 0.02 MPa; pressure 0.04 MPa; pressure 0.06 MPa; temperature 80 degC; vacuum degree; vacuum drying method; wood drying; wood moisture content; Atmospheric measurements; Materials; Moisture;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Science and Technology (ICIST), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9440-8
Type :
conf
DOI :
10.1109/ICIST.2011.5765180
Filename :
5765180
Link To Document :
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