Page 62 - Packed bed columns for absorption, desorption, rectification and direct heat transfer

57

or
AV ^v* J/V v* ) dG mdG 1 m
dY — dY = d(Y — Y ) = = dG(— J = n.dG , (185)
Oy Gy Cj Y Gy
where

n = — (186)
G r G x

From Eqs. (185) and (186) it follows:

(187)
n

Setting dG in Eq. (180) we obtain:

i e.dh , (188)

or

Y-Y

Wherefrom:

(190)

where the indices 1 and 2 are for the undermost and for the uppermost packing
cross-section respectively.
Taking into account that

(191)