MVC = molar volume conversion factor (849.5 scf/kg-mole for STP of 20°C and 1 atmosphere, or 836 scf/kg-mole fo r STP of 60°F and 1 atmosphere)
= conversion factor – carbon to carbon dioxide
= conversion factor – kg to metric tonnes
Operators who combust waste-derived fuels that are partly but not pure biomass and who determine CO2 emissions using methods provided in sections 95125(d)(1)-(3) shall determine the biomass-derived portion of CO2 emissions using the method specified in section 95125(h)(2), if applicable.
Method for Calculating CO2 Emissions from Fuel Combustion Using Measured Heat and Measured Carbon Content.
The operator shall use the following method to calculate CO2 emissions from combustion of refinery fuel gas using both high heat value (HHV) and fuel carbon content.
Each fuel gas system that provides fuel to one or more combustion devices shall be subject to the measurement and reporting methods described herein. The operator shall obtain fuel samples and choose measurement locations in a manner that minimizes bias and is representative of each fuel gas system.
For each separate fuel gas system, the operator shall calculate a daily fuel specific emission factor using the equation shown below. Operators meeting the definition of “small refiner” shall calculate a weekly emission factor for each refinery fuel gas system.
= CCA/HHVA * MWA/MVC * 3.664 * 1000
= daily CO2 emission factor for fuel gas system A (metric
tonnes CO2/MMBtu) CCA = fuel gas carbon content for fuel gas system A (kg carbon/kg fuel) H H V A = h i g h h e a t i n g v a l u e f o r f u e l g a s s y s t e m A ( B t u / s c f ) M W A = r e f i n e r y f u e l A m o l e c u l a r w e i g h t ( k g / k g - m o l MVC = molar volume conversion (849.5 scf/ kg-mole, for STP of 20°C and 1 atmosphere, or 836 scf/kg-mole for STP of 60°F and 1 atmosphere) 3.664 = conversion factor – carbon to carbon dioxide 1000 = conversion factor – kg/Btu to metric tonnes/MMBtu e )
(A) The operator shall determine carbon content once per day for each fuel gas system, by on-line instrumentation or by laboratory analysis of