496
R. Ahrens et al.
Table 1 Coefficients for the PBSs modeling the fluidized bed crystallizer process
Name
Notation
Unit
Value/Function
Density of purified water
ρ
kg/m 3
1050
Dynamic viscosity of purified water
μ
kg/m s
0.0014
Diffusion coefficient in (1.2)
D T
m 2 /s
λsusp
ρsuspCsusp
Thermal conductivity
λ susp
W/m K
0.6
Suspension density
ρ susp
kg/m 3
1050
Suspension specific heat capacity
C susp
J/kg K
3841
Scaling parameter in (1.2)
g T
K·m 3 /kg
Δh cryst
ρsuspCsusp
Crystallization enthalpy
Δh cryst
J/kg
89,100
Diffusion coefficient (c)
D c
m 2 /s
5.4 × 10 −10
Scaling parameter (1.2)
g c
mol/kg
−
1
M hydrate
Molar mass of hydrate
M hydrate
kg/mol
0.4744
Density of crystals
ρ cryst
kg/m 3
1760
Boltzmann constant
k B
J/K
1.3806504 × 10 −23
Universal gas constant
R
J/K mol
8.314
Fig. 9 Snapshot of the flow
field with velocities in m /s
inflow rate 56 kg /h
R. Ahrens et al.
Table 1 Coefficients for the PBSs modeling the fluidized bed crystallizer process
Name
Notation
Unit
Value/Function
Density of purified water
ρ
kg/m 3
1050
Dynamic viscosity of purified water
μ
kg/m s
0.0014
Diffusion coefficient in (1.2)
D T
m 2 /s
λsusp
ρsuspCsusp
Thermal conductivity
λ susp
W/m K
0.6
Suspension density
ρ susp
kg/m 3
1050
Suspension specific heat capacity
C susp
J/kg K
3841
Scaling parameter in (1.2)
g T
K·m 3 /kg
Δh cryst
ρsuspCsusp
Crystallization enthalpy
Δh cryst
J/kg
89,100
Diffusion coefficient (c)
D c
m 2 /s
5.4 × 10 −10
Scaling parameter (1.2)
g c
mol/kg
−
1
M hydrate
Molar mass of hydrate
M hydrate
kg/mol
0.4744
Density of crystals
ρ cryst
kg/m 3
1760
Boltzmann constant
k B
J/K
1.3806504 × 10 −23
Universal gas constant
R
J/K mol
8.314
Fig. 9 Snapshot of the flow
field with velocities in m /s
inflow rate 56 kg /h