5. NOMENCLATURE

A	Absorption factor.
Ap/Є3	Specific surface of filler (m2/m3).
AUT	Height of transfer unit (m).
EMV	Murphree efficiency of the vapor phase n.
g	Acceleration of gravity (1,27·108 m/h2)
G	Mass velocity of gas (kg/m2h)
Gn+1	Gas stream in total moles/time plate n +1.
GNp+1	Total moles/time plates Np +1
HL,n	Enthalpy of the liquid in the plate n (energy/mol).
HL,Np	Enthalpy of the gas in the plate n (energy/mol).
HG,n+1	Enthalpy of the gas flow in the plate n (energy/mol).
HG,Np+1	Enthalpy of the gas flow in the plate Np+1 (energy/mol).
Hx	Henry's constant.
Kx·a i Ky·a	Overall absorption coefficients (mol/s·m3).
Ln	Total moles/time of the liquid stream on the plate n.
LNp	Liquid flow, total moles/time in the plate n.
ni	Moles gas.
Na	Number real plates.
Np	Number of the plates.
Nt	Number of theoretical plates.
NUT	Number of transfer units.
Pi	Partial pressure of gas.
PT	Pressure at any point in the column can be considered constant.
R	Ideal gas constant.
S	Cross section of the column (m2).
T	Temperature.
V	Linear velocity of gas (m/s)
xn	Molar composition of the solute (liquid) in the plate n
xNp	Molar composition of the solute (fluid) in the plate Np +1
y1 i y0’	Concentrations of gas.
y1* i y0*	Concentrations in equilibrium with a concentration of fluid leaving (xn).
yn*	Composition of steam in equilibrium with the liquid that exits the stage n.
yn+1	Molar composition in the gas component (solute) in plate n +1.
yNp+1	Molar composition in the gas component (solute) in the plate Np +1.
Z	Filling Height.
ρG i  ρL	Density of gas and liquid (kg/m3)
μL	Viscosity of liquid (centipois)