Regulations Limiting Carbon Dioxide Emissions from Natural Gas-fired Generation of Electricity — 11
ng period “t” and must be based on the measurement of the temperature and pressure of that heat stream and determined using a continuous measuring device, M ext_j is the mass flow of the j th external heat stream originating from the other unit that contributed to the electricity generated by the generators of the shared steam turbine, expressed in tonnes, during period “t”, determined using a continuous measuring device, k is the k th internal heat stream originating from the given unit, where “k” goes from the number 1 to l and where l is the total number of heat streams that originated from the combustion of fuel in the unit and that contributed to the electricity generated by the generators of the shared steam turbine, h int_k is the average specific enthalpy of the k th internal heat stream originating from the given unit and having contributed to the electricity generated by the generators of the shared steam turbine, expressed in GJ/tonne, during period “t” and must be based on the measurement of the temperature and pressure of that heat stream and determined using a continuous measuring device, and M int_k is the mass flow of the k th internal heat stream originating from the given unit that contributed to the electricity generated by the generators of the shared steam turbine, expressed in tonnes, during period “t”, determined using a continuous measuring device. Net quantity of useful thermal energy (3) In the case of a unit that simultaneously generates electricity and produces useful thermal energy from the fuel combusted by a combustion engine or boiler, as the case may be, the net quantity of useful thermal energy produced by the unit in a calendar year, expressed in GWh, is determined by the formula The summation of the products of hout_i and Mout_i for each heat stream “i” minus the summation of the products of hin_j and Min_j for each heat stream “j”, summed for all time periods and then multiplied by the quotient of 1 over 3600 GJ per GWh. where t is the t th hour, where “t” goes from the number 1 to x and where x is the total number of hours during which the unit produced useful thermal energy in the calendar year; i is the i th heat stream exiting the unit, where “i” goes from the number 1 to n and where n is the total number of heat streams exiting the unit; h out_i is the average specific enthalpy of the i th heat stream exiting the unit, expressed in GJ/tonne, during period “t” and must be based on the measurement of the temperature and pressure of that heat stream and determined using a continuous measuring device; M out_i is the mass flow of the i th heat stream exiting the unit, expressed in tonnes, during period “t”, determined using a continuous measuring device; j is the j th heat stream — other than condensate return — entering the unit, where “j” goes from the number 1 to m and where m is the total number of heat streams entering the unit; h in_j is the average specific enthalpy of the j th heat stream — other than condensate return — entering the unit, expressed in GJ/tonne, during period “t” and must be based on the measurement of the temperature and pressure of that heat stream and determined using a continuous measuring device; and M in_j is the mass flow of the j th heat stream — other than condensate return — entering the unit, expressed in tonnes, during period “t”, determined using a continuous measuring device.