Page 23 - Air pollution and greenhouse gases from basic concepts to engineering applications for air emission control

xxiv Nomenclature
2
2
9
Force constant of proportionality, 9 × 10 (Nm /C )
K E
Partial pressure based equilibrium constant (Depends)
K P
Partial pressure based equilibrium constant under a reference condition
K P0
(Depends)
K Aerosol coagulation coefficient (–)
Mass transfer rate coefficient in adsorption (1/s)
K x
2
Overall mass transfer coefficient for the liquid phase (mol/m s)
K x
2
Overall mass transfer coefficient for the gas phase (mol/m s)
K y
L Length of the ESP plates (m)
L Mole flow rate of the liquid (mol/s)
L Obukhov Length (m)
Cyclone body length (m)
L B
Cyclone cone length (m)
L C
Mole flow rate of the solute fee liquid (mol/s)
L
LHV Lower Heating Value (J/mol)
m Mass of a molecule (kg)
_ m Air emission rate by mass (kg/s)
_ m Mass flow rate of fluid (kg/s)
m 0 Molality (mol/kg)
i
Mass of the fuel droplet (kg)
m l
Mass of water vapor in given air volume (kg)
m w
Mass of water vapor required to saturate (kg)
m w,s
Liquid fuel droplet vaporization rate (kg/s)
_ m v
M Molar weight (kg/kmol)
Equilibrium concentration in adsorption (kg/kg)
M eq
Maximum loading potential of adsorbate that can be loaded to per mass of
M max
adsorbent (kg/kg)
2
Flux of momentum along x-direction (1/s m )
M x
n Mole amount of gases (mol, kmol)
n Number of ions (–)
n Number of molecules (–)
3
n Particle number concentration (1/m )
2
n' Mole transfer of pollutant (mol/m s)
Number of molecule colliding with the wall (–)
n c
N Number of aerosol particles (–)
2
N Cumulative number of particles deposited per unit area of surface (1/m )
Number of turns the gas flow makes before turning upward in a cyclone
N e
3
Ion concentration in the charging zone (1/m )
N i0
3 2
N vdw Van der Waals number (J m /mol )
Avogadro constant, 6.022 × 0 23 (1/mol)
N A
NTU Number of transfer unit (–)
Saturation vapor partial pressure at the actual dry bulb temperature (Pa)
p sat
Vapor partial pressure (Pa)
p w