App.e-20, D) jis k2301 – Yokogawa GC8000 Process Gas Chromatograph User Manual
Page 493
<Appendix E Computation Scheme>
App.E-20
IM 11B08A01-01E
(d) JIS K2301
The GC8000 converts each peak result obtained in volume percent into the one in mole fraction,
and calculates the calorifi c value (gross or net), specifi c value, compression factor, and Wobbe
index of the sample gas from the calorifi c value (gross or net), specifi c value, compression factor
and summation factor of each peak.
<Formula>
Z = 1 – (
)
2
+ 0.0005(2C
MH
– C
MH
2
)
C
Mi
H
G
: calorific value (gross or net)
H
i
: ideal calorific value of component i (gross or net)
S
: Specific value of the sample gas
S
i
: ideal specific value of component i
Z
: compression factor of the sample gas
Z
i
: compression factor of component i
b
i
: summation factor of component i
W : Wobbe Index of the sample gas
C
Vi
: volume percent of component i
C
Mi
: mole fraction of component i
C
MH
: mole fraction of hydrogen
∑
S =
Z
C
Mi
S
i
∑
W =
S
H
H
G
=
Z
C
Mi
H
i
∑
C
Mi
=
C
Vi
Z
i
C
Vi
Z
i
∑
b
i
Where:
2nd Edition : May 11, 2012-00