Fuel Conversion: Fuel Tab

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range. Note that due to how the variables are used in the modeling equations, the range of acceptable values may be further reduced; for more details, see Gasification: Modeling Assumptions & Constraints.

Variable	Default Value	Range

○ Is Fuel? Check this box to indicate that the corresponding pure component represents a dry fuel.	No	Yes/No
○ C (%) The carbon mass percentage of the dry fuel represented by the corresponding pure component.	0.0	0-100
○ H (%) The hydrogen mass percentage of the dry fuel represented by the corresponding pure component.	0.0	0-100
○ O (%) The oxygen mass percentage of the dry fuel represented by the corresponding pure component.	0.0	0-100
○ N (%) The nitrogen mass percentage of the dry fuel represented by the corresponding pure component.	0.0	0-100
○ S (%) The sulfur mass percentage of the dry fuel represented by the corresponding pure component.	0.0	0-100
○ Ash (%) The ash mass percentage of the dry fuel represented by the corresponding pure component.	0.0	0-100
○ HHV (kcal/kg) The higher heating value of the dry fuel represented by the corresponding pure component.	0.0	Positive
○ Fuel Only Check this box to show only those components whose “Fuel?” option is checked.	No	Yes/No

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Gasification: Modeling Calculations.

•Composition and HHV of Fuel Components...

If a pure component of the fuel stream represents a dry fuel (e.g., biomass feedstock), you need to check the “Fuel?” option next to that component and specify the corresponding composition and HHV. The total composition must add up to 100%.

•Show All Components, Components with Non-Zero Flow, and Fuel Components Only...

Select “All” to show all components or “With Non-Zero Flow” to show only existing inlet stream components. In addition, you may check the “Fuel Only” option to filter the previous selection further, by showing only those components whose “Fuel?” option is checked.