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Help Site PROD > GHG Reporting Instructions > Preparing Your Annual GHG Reporting > Subpart Reporting Instructions > Subpart P - Hydrogen Production > Using e-GGRT to Prepare Your Subpart P Report for RY2014 and Later > Subpart P IVT Equation Inputs Summary
Subpart P IVT Equation Inputs Summary
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This page lists the variables used in each Inputs Verifier Tool (IVT) equation in subpart P. This information is intended primarily for XML uploaders to enable them to understand how each IVT equation is calculated and to identify sources for the constants, default values, and lookup values needed to solve the equations.

Click the links for the equations below to view the variables used in the IVT calculations:

Equation P-1: Annual CO2 Process Emissions Arising from Gaseous Fuel and Feedstock Consumption

Equation P-1 calculates annual CO2 process emissions arising from gaseous fuel and feedstock consumption.

 

The table below defines the parameters in this equation and provides the values or sources of any constants, default values, and lookup values. 

Parameter

Description

Units of Measure

Value or Source

CO2

Annual CO2 process emissions arising from gaseous fuel and feedstock consumption

metric tons/yr

Output 

Fdstkn

Volume or mass of the gaseous fuel or feedstock used in month n

scf (at standard conditions of 68°F and atmospheric pressure) or kg of fuel or feedstock

User input 

CCn

Average carbon content of the gaseous fuel or feedstock for month n

kg carbon per kg of fuel or feedstock

User input  

MWn

Average molecular weight of the gaseous fuel or feedstock for month n. If you measure mass, the term “MWn/MVC” is replaced with “1”.

kg/kg-mole

User input 

MVC

Molar volume conversion factor at standard conditions

scf per kg-mole

849.5

k

Months in the year

1 to 12

44/12

Ratio of molecular weights, CO2 to carbon

44/12

0.001

Conversion factor from kg to metric tons

kg/metric ton 

0.001

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Equation P-2: Annual CO2 Emissions Arising from Liquid Fuel and Feedstock Consumption

Equation P-2 calculates annual CO2 emissions arising from liquid fuel and feedstock consumption.

 

The table below defines the parameters in this equation and provides the values or sources of any constants, default values, and lookup values.

Parameter

Description

Units of Measure

Value or Source

CO2

Annual CO2 emissions arising from liquid fuel and feedstock consumption

metric tons/yr

Output 

Fdstkn

Volume or mass of the liquid fuel or feedstock used in month n

gallons or kg of fuel or feedstock

User input 

CCn

Average carbon content of the liquid fuel or feedstock, for month n

kg carbon per gallon or kg of fuel or feedstock

User input 

k

Months in the year

1 to 12

44/12

Ratio of molecular weights, CO2 to carbon

44/12

0.001

Conversion factor from kg to metric tons

kg/metric ton 

0.001

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Equation P-3: Annual CO2 Emissions Arising from Solid Fuel and Feedstock Consumption

Equation P-3 calculates annual CO2 emissions arising from solid fuel and feedstock consumption.

 

The table below defines the parameters in this equation and provides the values or sources of any constants, default values, and lookup values. 

Parameter

Description

Units of Measure

Value or Source

CO2

Annual CO2 emissions from solid fuel and feedstock consumption in metric tons per year

metric tons/yr

Output 

Fdstkn

Mass of solid fuel or feedstock used in month n

kg of fuel or feedstock

User input 

CCn

Average carbon content of the solid fuel or feedstock, for month n

kg carbon per kg of fuel or feedstock

User input 

k

Months in the year

1 to 12

44/12

Ratio of molecular weights, CO2 to carbon

44/12

0.001

Conversion factor from kg to metric tons

kg/metric ton

0.001

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