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The Gamma/Phi Formulation of VLE
i i iˆ ˆf y P
lˆ
li i
ˆ ˆf f
i i i i iˆy P x f i=1, 2,…, N
li i i if̂ x f
i i i i iy , , ,
l satsat sat i i
i i iV P P
f P exp
i i i pRT
sati i i i iy P x P i=1 2 N i i i i iy P x P i 1, 2,…, N
l sati ii
V P Pˆ where i
i sati
expˆ RT
where
Bubblepoint and DewPoint Calculations
sati i i i iy P x P i=1, 2,…, N
i NT ,P , y , y , , y 1 2 1
i NT x x x 1 2 1 i NT , , x , x , , x 1 2 1
satiP f T
Bubblepoint and DewPoint Calculations
t 1 tsati i i
ii
x Py (12 9)
P
i iy =1 sati i i
i
x P1
P
i ii sat
i i
y Px (12 10)
P
ii x 1 i isat
i i
y P1
P
sati i ix P
P (12 11)
i( )
1i i
sati i
1P (12 12)y
P
Bubblepoint and DewPoint Calculations
satj sat sat
i i i i j
PP (12 13)x P P
i i i i j
i
x P P
sat
sat jPy sat ji ij sat
i i i
PyP P (12 14)P
jjsat
j j
BT C (12 15)
A ln P
sat ii i
i
BT C (12 16)
A ln P