Q
heat
|
kJ
|
|
|
heat transfer rate
|
kW
|
|
r
|
radiative forcing
|
W/(kg m2)
|
|
R
|
specific gas constant
|
kJ/(kg K)
|
|
R
u
|
universal gas constant
|
kJ/(kmol K)
|
|
Re
|
Reynolds number
|
|
|
s
|
specific entropy on mass basis
|
kJ/(kg K)
|
|
S
|
entropy
|
kJ/K
|
|
S
ads
|
adsorption selectivity
|
—
|
|
t
|
time
|
s or h
|
|
t
m
|
membrane thickness
|
m
|
|
T
|
temperature
|
°C or K
|
|
u
|
absolute velocity
|
m/s
|
|
U
|
internal energy
|
kJ
|
|
v
|
specific volume on mass basis
|
m3/kg
|
|
V
|
volume
|
m3
|
|
|
volumetric flow rate
|
m3/s
|
|
w
|
specific work on mass basis
|
kJ/kg
|
|
|
specific work on molar basis
|
kJ/kmol
|
|
W
|
work
|
kJ
|
|
|
power
|
kW
|
|
x
|
vapour quality
|
kgvapour/kgvapour+liquid
|
|
x
i
|
mole fraction in liquid phase for component i
|
—
|
|
y
i
|
mole fraction in gas phase for component i
|
—
|
|
Z
|
compressibility factor
|
—
|
Greek Symbols
|
α
|
heat-to-power ratio
|
kWh/kWe
|
|
α
i,j
|
membrane selectivity of components i and j for gas mixture
|
—
|
|
|
heat of reaction
|
kJ
|
|
η
cap,e
|
CO2 capture efficiency
|
—, %
|
|
η
|
efficiency
|
—, %
|
|
η
cap
|
CO2 capture ratio
|
—, %
|
|
η
is
|
isentropic efficiency
|
—, %
|
|
η
p
|
polytropic efficiency
|
—, %
|
|
κ
|
ratio of specific heats, cp/cv
|
—
|
|
λ
|
excess air ratio
|
—
|
|
ξ
|
friction factor
|
—
|
|
ρ
|
density
|
kg/m3
|
|
σ
|
ionic conductivity
|
S/m
|
|
σ
inj
|
CO2 formation by combustion per tonne of CO2 injected
|
t CO2 by combustion/t CO2 injected
|
|
σ
store
|
Q
