TESTO 327 - Efficiency and air ratio calculations

Appendix28
Efficiency referred to Gross Efficiency:
Effg = 100 -
(
()+
()
+
()
)
Efficiency referred to Nett Efficiency:
Effn= 100 -
(
()+
()
+ ()
)
Kgr/Knet/Qgr/Qnet/K1/MH2O/H:
Fuel-specific factors
FT: Flue gas temperature
AT: Ambient temperature
CO: Measured carbon monoxide
value in %
CO
2
: Calculated carbon dioxide
value in %
E
xcess Air (ExAir): =
( -1 )x 100 21%: Oxygen level of air
O
2
: Measured oxygen level in %
A
ir ratio: λ = C0
2
max: Fuel-specific carbon
dioxide value
CO
2
: Calculated carbon dioxide
value
C
arbon monoxide
u
ndiluted: uCO = CO x λ
CO : Measured carbon
monoxide value
λ: Calculated air ratio
F
lue gas dew point
temperature: FTP = FH20: Flue gas specific water
vapour level in Vol.%
PAbs: Absolute pressure in
mbar/hPa
K
gr
x (FT - AT)
CO
2
(MH
2
O + 9 x H) x (2488 + 2.1 x FT - 4.2 x AT)
Q
gr
x 1000
K1 x CO
CO
2
+ CO
K
net
x (FT - AT)
CO
2
(MH
2
O + 9 x H) x (210 + 2.1 x FT - 4.2 x AT)
Q
net
x 1000
K1 x Q
gr
x CO
Q
net
x (CO
2
+ CO)
ln (
ln (
FH20 x PAbs
610.78
FH20 x PAbs
610.78
)x 234.175
)- 17.08085
CO
2
max
CO
2
21%
21% - O
2