EN
16.1.2023
8.1.
Official Journal of the European Union
L 14/137
Dry/wet correction If the emissions are measured on a dry basis, the measured concentration shall be converted to a wet basis according to the following equation: cw = kw × cd
(12)
Where:
8.1.1.
cd
is the dry concentration in ppm or per cent volume
kw
is the dry/wet correction factor (kw,a, kw,e, or kw,d depending on respective equation used)
Raw exhaust gas
(13)
or
(14)
or
(15) With (16) and
(17) Where: Ha
is the intake air humidity, g water per kg dry air
wALF
is the hydrogen content of the fuel, per cent mass
qmf,i
is the instantaneous fuel mass flow rate, kg/s
qmad,I
is the instantaneous dry intake air mass flow rate, kg/s
pr
is the water vapour pressure after cooling bath, kPa
pb
is the total atmospheric pressure, kPa
wDEL
is the nitrogen content of the fuel, per cent mass
wEPS
is the oxygen content of the fuel, per cent mass
α
is the molar hydrogen ratio of the fuel