TESTO 335 Instruction Manual page 55

E E f f f f i i c c i i e e n n c c y y : :
A A i i r r r r a a t t i i o o : :
N N i i t t r r o o g g e e n n o o x x i i d d e e s s : :
C C a a r r b b o o n n m m o o n n o o x x i i d d e e
u u n n d d i i l l u u t t e e d d : :
F F l l u u e e g g a a s s d d e e w w p p o o i i n n t t : :
F F l l o o w w s s p p e e e e d d : :
A A i i r r f f l l o o w w : :
η η = 100 - qA
V
AGtrMin
λ λ = 1+
x
V
LMin
No NO2 measuring cell connected:
NO = NO + (NO x NO)
x 2Add.
NO2 Measuring cell connected:
NO = NO + NO
x 2
uCO = CO x λ λ
F x P
(
H20 Abs
ln
610.78
ATP =
(
F x P
H20 Abs
ln
610.78
575 x ∆ ∆ P x (FT + 273.15)
v =
P
abs
V = v x a
qA:
CO
O -
2
2
V
CO
O - O +
2ref 2
2
V
O
O
CO:
λ:
)
x 234.175
F
)
- 17.08085
P
x α α
P
∆ P:
FT:
α:
v:
a:
K. Technical data
K.4 Principles of calculation
Calculated flue gas loss
: Dry flue gas volume with
AGtrMin
stoichiometric
combustion
: Air requirement for stoichio-
LMin
metric combustion of
the fuel
: O2 reference value
2ref
: Measured oxygen
2
content as %
NO: Measured nitrogen
monoxide value
NO : Nitrogen dioxide
2Add.
addition factor
Measured carbon
monoxide value
Calculated air ratio
: Flue gas-specific
H20
water vapour content as
vol.%
: Absolute pressure in
Abs
mbar/hPa
: Absolute pressure
abs
Differential pressure
Flue gas temperature
Pitot tube factor
Flow speed
Cross-section area
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