Sensonic 4000
BASIC PRINCIPLES OF CALCULATING RESULTS
- the factor used to calculate loss caused by incomplete combustion.
It should be assumed
= 69 for solid fuels
= 52 for liquid fuels
= 32 for gaseous fuels
O2ref
-reference oxygen - the parameter used to calculate relative concentrations of
components (formula 4). It is a standard quantity. In the table, it has been
assumed that as in DIN standards that it is: 11% - for solid fuels and 3% for
gaseous and liquid ones.
HV
- fuel quality - the amount of energy emitted during complete combustion of 1
kilogram (or 1m
3
in case of gas) of fuel.
7.8
The influence of fuel parameters on the accuracy of result calculations
As has already been mentioned,
Sensonic 4000
does not measure the concentration of carbon dioxide, but
calculates it from the measured oxygen concentration and the CO2max parameter. On basis of CO2
concentration calculated in this way, the chimney loss, combustion efficiency and loss by incomplete
combustion are calculated. Obviously, the fuel parameters (especially CO2max), have a fundamental
influence on calculations of combustion processes. The following results calculated by
Sensonic 4000
are
affected by fuel parameters:
CO
2
contents
- depends on CO
2
max
SL chimney loss
- depends on CO
2
max, A1 and B
and
*
- depends on CO
2
max , A1 and B
IL loss by incomplete combustion - depends on CO
2
max and
.
As formula
shows, t h e v a l u e o f t h e e x c e s s a i r f a c t o r i s i n d e p e n d e n t o f
f u e l p a r a m e t e r s . The calculated results of gas quantities (except CO2) and the results of
temperature measurements and power quantities do not depend on fuel parameters either.
Please note that fuel quality HV does not appear in any formula. This parameter d o e s n o t
i n f l u e n c e a n y m e a s u r e m e n t r e s u l t s h o w n b y
Sensonic 4000
.
