Nonequilibrium Thermal Dynamic Modeling of Porous Medium Vacuum Drying Process
2012 ◽
Vol 2012
◽
pp. 1-22
◽
Keyword(s):
Porous medium vacuum drying is a complicated heat and mass transfer process. Based on the theory of heat and mass transfer, a coupled model for the porous medium vacuum drying process is constructed. The model is implemented and solved using COMSOL software. The water evaporation rate is determined using a nonequilibrium method with the rate constant parameterKr. Krvalues of 1, 10, 1000, and 10000 are simulated. The effects of vapor pressures of 1000, 5000, and 9000 Pa; initial moistures of 0.6, 0.5, and 0.4 water saturation; heat temperatures of 323, 333, and 343 K; and intrinsic permeability of 10−13, 10−14, and 10−15 m2are studied. The results facilitate a better understanding of the porous medium vacuum drying process.
2013 ◽
Vol 2013
◽
pp. 1-8
◽
Keyword(s):
2020 ◽
Vol 10
(2)
◽
pp. 5554-5560
Keyword(s):
1999 ◽
Vol 38
(10)
◽
pp. 854-862
◽
Keyword(s):
2009 ◽
Vol 36
(6)
◽
pp. 524-537
◽
Keyword(s):
2007 ◽
Vol 10
(5)
◽
pp. 489-502
◽
Keyword(s):
2012 ◽
Vol 9
(1)
◽
pp. 91-93