18
S. Sander et al.
Table 2 Model parameters
used throughout the study
sorted by geometry, process
and material properties
Name
notation
Value unit
Geometry parameters
Length
l
1.2 m
Width
w
0.5 m
Height
h
0.3 m
Coefficient of roughness f E
0.8
Wire-to-wire distance
wwD
0.3 m
Wire radius
r E
5e-4 m
Effective field const.
C E
1.1
Process parameters
Pressure
p
1 bar
Temperature
T
293 K
Applied voltage
V
70,000 V
Gas flow rate
V g
0.12 m 3 /s
Name notation
Value unit
Material parameters
Diffusion constant D g
1.77e-5 m 2 /s
Gas viscosity M g
1.82e-5 Pa s
Gas density ρ g
1.19 kgm 3
Ion mobility b Ion
1.6e-4 m2/V
Material parameters CaCO 3
Particle size distribution q(dp)
Matrix 1/μm
Dielectric constant ε r
3.4
Hamaker constant A1 32
2.2e-19
Coefficient of restitution e
0.3
Material parameters Al 2 O 3
Particle size distribution q(dp)
Matrix 1/μm
Dielectric constant ε r
2.2
Hamaker constant A1 32
2.69e-20
Coefficient of restitution e
0.8
cooperation with the University of Wuppertal SPP project. Scanning Electron Microscope (ESEM) images and Energy Dispersive X-Ray (EDX) analyzes of fly ash were
processed.
In a second approach of ESP analyzes also metal oxide (Al 2 O 3 Pural NF) as well
as natural oxide CaCO 3 (Ulmer Weiss) powders and particles are investigated.
The analysis of the EDX spectrum of a fly ash sample in Fig. 10 shows a significant
contribution of carbon, followed by silicon, aluminum and iron. Other components
occur in low concentrations of less than one percent by mass. The high percentage
S. Sander et al.
Table 2 Model parameters
used throughout the study
sorted by geometry, process
and material properties
Name
notation
Value unit
Geometry parameters
Length
l
1.2 m
Width
w
0.5 m
Height
h
0.3 m
Coefficient of roughness f E
0.8
Wire-to-wire distance
wwD
0.3 m
Wire radius
r E
5e-4 m
Effective field const.
C E
1.1
Process parameters
Pressure
p
1 bar
Temperature
T
293 K
Applied voltage
V
70,000 V
Gas flow rate
V g
0.12 m 3 /s
Name notation
Value unit
Material parameters
Diffusion constant D g
1.77e-5 m 2 /s
Gas viscosity M g
1.82e-5 Pa s
Gas density ρ g
1.19 kgm 3
Ion mobility b Ion
1.6e-4 m2/V
Material parameters CaCO 3
Particle size distribution q(dp)
Matrix 1/μm
Dielectric constant ε r
3.4
Hamaker constant A1 32
2.2e-19
Coefficient of restitution e
0.3
Material parameters Al 2 O 3
Particle size distribution q(dp)
Matrix 1/μm
Dielectric constant ε r
2.2
Hamaker constant A1 32
2.69e-20
Coefficient of restitution e
0.8
cooperation with the University of Wuppertal SPP project. Scanning Electron Microscope (ESEM) images and Energy Dispersive X-Ray (EDX) analyzes of fly ash were
processed.
In a second approach of ESP analyzes also metal oxide (Al 2 O 3 Pural NF) as well
as natural oxide CaCO 3 (Ulmer Weiss) powders and particles are investigated.
The analysis of the EDX spectrum of a fly ash sample in Fig. 10 shows a significant
contribution of carbon, followed by silicon, aluminum and iron. Other components
occur in low concentrations of less than one percent by mass. The high percentage