mru NOVA compact - Fuel Type Data and Conversions

USER MANUAL NOVAcompact
MRU GmbH, D-74172 Neckarsulm
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11.6. Fuel types
General information
%9
.20
max
2 =
O
O2 content
=2O
measured O2 value [%]
=bezO2
O2-reference value [%] (fuel specific)
=max2CO
CO2max-value [%] (fuel specific)
=
trAG
V
min,
Flue gas volume, dry and O2-free (fuel specific)
CO2, Lambda, losses, efficiency








−⋅=
max
max
2
2
122
O
O
COCO
22
2
2
2
max
max
max
OO
O
CO
CO
−
== λ
(prefer the 2nd O2 formula!)
( )








+
−
⋅−= B
OO
A
TTlosses
airfluegas
22
max
2
(temp. in °C, A2 and. B fuel specific)
lossesefficiency −= %100
Dew point
(DIN 4705, part 1, page 17)
(
)
67
,236
ln
6448
,23
9,
4077
−
−
=
D
P
p
t
with
LD
p
OH
p *
100
2
=
with
2
1
100
1
,12
CO
f
O
H
W
+
+=
tP : dew point temp. in °C H2O : water vapour content [%]
pD : steam part. pressure fW : humidity value of fuel [%]
pL : atmospheric pressure CO2 : carbon dioxide content [%]
At standard pressure (1013 hPa) the dew point is calculated:
( )
67,236
2
1
100
1,1ln7241,16
9,4077
67,236
1013ln
2
1
100
1,1ln6448,23
9,4077
−












+
+−
=−
−












+
+−
=
CO
f
CO
f
t
WW
P
CO- conversion of CO [ppm]
[ ]
λ ⋅== ][]
2%0
[ ppmCO
O
ppm
COppmCOunv
2max2
2max
2
][]
2
[
OO
bezOO
ppmCO
bezO
ppm
CO
−
−
⋅=
CO
mg
m
CO ppm[ ] [ ] ,249
3
1= ⋅