Page 20 - Air pollution and greenhouse gases from basic concepts to engineering applications for air emission control

Nomenclature

2
3
a Packing material property (m /m )
a Contact radius between particle and another surface (m)
2
A Area (m )
A Rate coefficient for reaction rate constant (Depends)
2
Cross-sectional area (m )
A c
Filter porosity parameter (–)
A s
A/F Air fuel ratio in combustion (–)
b Depth of the ESP plates (m)
B Rate coefficients for reaction rate constant (Depends)
Molecular speed along x-direction (m/s)
c x
Molecular speed along y-direction (m/s)
c y
Molecular speed along z-direction (m/s)
c z
Root mean square speed (m/s)
c rms
Air heating capacity (J K/kg)
c p,a
~ c A gas molecule velocity vector (m/s)
c Mean molecular speed (m/s)
~ c A=B Average relative velocity (m/s)
Mean thermal speed of the ions (m/s)
c i
Specific heat of the fuel (kJ/pg)
c p
3
C Concentration of gas or air pollutant (kg/m )
3
Air pollutant concentration in air exiting the room (kg/m )
C e
Cunningham correction factor (–)
C c
Drag coefficient (–)
C D
3
Concentration of the pollutant in entering the box in a box model (kg/m )
C i
3
C i∞ Steady state air pollutant concentration when t !1 (kg/m )
3
Normalized air pollutant concentration (kg/m )
C N
3
Number of molecules per unit volume of the gas (#/m )
C N
3
Real concentration in the air stream (kg/m )
C o
3
Air pollutant concentration in supply air (kg/m )
C s
Mass of adsorbate per mass of adsorbent (kg/kg)
C s
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