Page 167 - Modelling in Transport Phenomena A Conceptual Approach

NOTATION 147

M mass, kg
m mass flow rate, kg/ s
n number of moles, kmol
nij number of moles of ith species in the jth reaction
P pressure, Pa
P modified pressure, Pa
Q volumetric flow rate, m3/s
r rate of a chemical reaction, kmol/ m3. s
9? rate of generation (momentum, energy, mass) per unit volume
T temperature, "Cor K
t time, s
V volume, m3
V velocity, m/ s
w rate of work, W
X fractional conversion

Xi mole fraction of species i
z rectangular coordinate, m
ffi stoichiometric coefficient of species i
Qi j stoichiometric coefficient of ith species in the jth reaction
-
ff xi ai
A difference
& molar extent of a reaction, kmol
5 intensive extent of a reaction, kmol/ m3
P density, kg/ m3
Pm. density of manometer fluid, kg/ m3
Bracket

(u) average value of u
Subscripts
atm atmospheric
in inlet
0 initial
out out
T total

RJEFERENCE

Maheshwari, M. and L. Akella, 1988, Calculation of preexponential term in kinetic
rate expression, Chem. Eng. Ed. (Summer), 150.