Division 3.5.2 Dry-to-wet concentration conversion

Parameters of this point are obtained from the results of the chemical balance calculated in point 3.4.3. The following relation exists between gas molar concentrations in the measured flow x _gasdry and x _gas [mol/mol] expressed on a dry and wet basis respectively [equations (7-109) and (7-110)]:

where:

x _H2O

molar fraction of water in the measured flow on a wet basis [mol/mol]

x _H2Odry

molar fraction of water in the measured flow on a dry basis [mol/mol]

For gaseous emissions a removed water correction shall be performed for the generic concentration x [mol/mol] by means of equation (7-111):

Where:

x _{[emission]meas}

molar fraction of emission in the measured flow at measurement location [mol/mol]

x _{H2O[emission]meas}

amount of water in the measured flow at the concentration measurement [mol/mol]

x _H2Oexh

amount of water at the flowmeter [mol/mol]