Division 2.1.6.4 Carbon balance method, 1-step procedure
United Kingdom
The following 1-step formula set out in equation (7-20) can be used for the calculation of the wet exhaust gas mass flow rate qm ew, i [kg/s]:
| (7-20) |
with the carbon factor f c [-] given by:
| (7-21) |
Where:
instantaneous fuel mass flow rate [kg/s]
carbon content of fuel [% mass] (see equation (7-82) of point 3.3.3.1 or table 7.3)
intake air humidity [g H2O/kg dry air]
combustion additional volume on a dry basis [m3/kg fuel]
dry CO2 concentration in the raw exhaust gas [%]
dry CO2 concentration in the ambient air [%]
dry CO concentration in the raw exhaust gas [ppm]
wet HC concentration in the raw exhaust gas [ppm]
and factor k fd [m3/kg fuel] that is calculated by means of equation (7-22) on a dry basis by subtracting the water formed by combustion from k f:
| k fd = k f – 0,11118 · w H | (7-22) |
where:
fuel specific factor of equation (7-5) [m3/kg fuel]
hydrogen content of fuel [% mass]