Multi-Sector Air Pollutants Regulations (SOR/2016-151)

(E_cng + E_gff)/(E_cng + E_gff + E_o + E_s) × 100

where

E_cng

is the input energy resulting from the introduction of commercial grade natural gas for the given hour, determined by the formula

Q_cng × HHV_cng

where

Q_cng

is the quantity of the commercial grade natural gas combusted during the given hour, as measured by a flow meter on the input, expressed in standard m³, and

HHV_cng

is the higher heating value of the commercial grade natural gas combusted during the given hour, expressed in GJ/standard m³, being

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

• (b) 0.03793;

E_gff

is the input energy resulting from the introduction of gaseous fossil fuel, other than commercial grade natural gas, for the given hour, determined by the formula

Q_gff × HHV_gff

where

Q_gff

is the quantity of the gaseous fossil fuel, other than commercial grade natural gas, combusted during the given hour, as measured by a flow meter on the input, expressed in standard m³, and

HHV_gff

is the higher heating value of the gaseous fossil fuel, other than commercial grade natural gas, combusted during the given hour, expressed in GJ/standard m³, determined in accordance with any of the required HHV methods set out in section 22 that apply;

E_o

is the input energy resulting from the introduction of a fuel other than gaseous fossil fuel during the given hour, determined by the formula

Σ_i(Q_i × HHV_i)

where

Q_i

is the quantity of the ith fuel other than gaseous fossil fuel combusted during the given hour as measured by a flow meter on the input, expressed in a given unit,

HHV_i

is the higher heating value of the ith fuel other than gaseous fossil fuel combusted during the given hour, expressed in GJ/the given unit, being

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

• (b) the default higher heating value set out in column 2 of the applicable table to Schedule 3 for the type of fuel set out in column 1 of that table, and

i

is the ith fuel other than gaseous fossil fuel combusted, where i goes from 1 to n and where n is the number of those fuels combusted; and

E_s

is the input energy, expressed in GJ, that originates from a source other than the combustion of fuel in the boiler’s or heater’s combustion chamber during the given hour, determined in accordance with generally accepted engineering principles.

100% – L_dfg – L_w – L_rc – L_o

where

L_dfg

is the percentage of loss of thermal efficiency due to the thermal energy contained in the boiler’s flue gas determined on a dry basis for an hour in the given day, determined in accordance with section 19;

L_w

is the percentage of loss of thermal efficiency due to the thermal energy contained in the water in the boiler’s flue gas for an hour in the given day, determined in accordance with section 20;

L_rc

is the percentage of loss of thermal efficiency due to radiation and to convection of the boiler’s surfaces for an hour in the given day, being

• (a) for a watertube boiler, the percentage of loss of thermal efficiency that is

  • (i) set out in, as applicable, column 2, 3 or 4 of Schedule 4, if the boiler operates during that hour at, respectively, 100%, 80% or 60% of its rated capacity, for the rated capacity of the boiler set out in column 1 of that Schedule and for that percentage , or

  • (ii) interpolated on a linear basis from

    • (A) the rated capacity of the boiler within the applicable range of rated capacities as between two consecutive rows of rated capacities set out in column 1 of Schedule 4, and

    • (B) the percentage of loss of thermal efficiency at which the boiler operates during that hour as set out in

      • (I) the range between the percentages set out in columns 2 and 3 of Schedule 4, if it operates between 100% and 80% of its rated capacity, or

      • (II) the range between percentages set out in columns 3 and 4 of that Schedule, if it operates between 80% and 60% of its rated capacity,

• (b) for a firetube boiler, 0.5%, and

• (c) in any other case, 1%; and

L_o

is the percentage of loss of thermal efficiency due to other sources, which is deemed to be 0.1%.

1.005 × (T_g – T_i)/HHV_m × M_g × 100

where

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;

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 combusted during that hour, 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; and

M_g

is the average ratio of the mass of the flue gas to the mass of the fuel combusted, expressed in kg/kg, during that hour, determined by the formula

0.962 × [1 + %O₂/(20.9 – %O₂)] × M_s

where

%O₂

is the percentage of oxygen, determined by volume on a dry basis, in the flue gas, determined in accordance with EPA Method 3A or ASTM D6522-11,

M_s

is the ratio of the stoichiometric mass of the flue gas to the mass of the fuel combusted, expressed in kg/kg, being

• (a) for commercial grade natural gas,

  • (i) the ratio determined in accordance with paragraph (b), or

  • (ii) 15.3 kg/kg, and

• (b) in any other case, the ratio determined by the formula:

  12.492C + 26.296H + N + 5.305S – 3.313O

  where the concentration of each of the following constituents of the fuel combusted is determined in accordance with subsections 23(1) and (2) and

  C

  is the concentration of carbon in the fuel combusted, expressed in kg of carbon per kg of that fuel,

  H

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

  N

  is the concentration of nitrogen in the fuel combusted, expressed in kg of nitrogen per kg of that fuel,

  S

  is the concentration of sulphur in the fuel combusted, expressed in kg of sulphur per kg of that fuel, and

  O

  is the concentration of oxygen in the fuel combusted, expressed in kg of oxygen per kg of that fuel.

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 determination of the concentration, expressed in kg/kg, of each of the constituents of the commercial grade natural gas made in accordance with ASTM D1945-03 or ASTM D1946-90, 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;