Multi-Sector Air Pollutants Regulations

8.94H × [2450 + 1.989(T_g – T_i)]/HHV_m × 100

where

H

is the concentration of hydrogen in the fuel combusted during that hour, expressed in kg of hydrogen per kg of that fuel, being

• (a) for commercial grade natural gas,

  • (i) a weighted average calculated on the basis of the concentration — expressed in kg/kg — of each of the constituents of the commercial grade natural gas, as determined in accordance with ASTM D1945-03, ASTM D1946-90, GPA 2261-25 or GPA 2286-24, or

  • (ii) 0.237 kg/kg, and

• (b) in any other case, the concentration determined in accordance with subsections 23(1) and (2);

T_g

is the average temperature, expressed in °C, of the flue gas, as measured in the stack during that hour;

T_i

is the average temperature, expressed in °C, of the air introduced into the combustion chamber during that hour; and

HHV_m

is the higher heating value of the fuel combusted during that hour, expressed on a mass basis in kJ/kg, being

• (a) for commercial grade natural gas,

  • (i) the higher heating value determined in accordance with any of the required HHV methods set out in section 22 that apply, or

  • (ii) 51 800 kJ/kg, and

• (b) in any other case, the weighted average of the higher heating value of each fuel introduced into the combustion chamber, expressed on a mass basis in kJ/kg, determined in accordance with any of the required HHV methods set out in section 22 that apply;