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.
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Variable
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Default Value
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Range
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● Product CO2: Is Initial Guess Set?
This box is always checked to indicate that an initial guess must be specified for the amount of carbon dioxide in the product gas.
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Yes
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Yes/No
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○ Product CO2: Initial Guess (mol/mol inlet C)
Initial guess for the amount of carbon dioxide in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.4
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0-100
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● Product CO2: Final Solution (mol/mol inlet C)
Final solution for the amount of carbon dioxide in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.0
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0-100
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● Product CO: Is Initial Guess Set?
This box is always checked to indicate that an initial guess must be specified for the amount of carbon monoxide in the product gas.
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Yes
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Yes/No
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○ Product CO: Initial Guess (mol/mol inlet C)
Initial guess for the amount of carbon monoxide in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.4
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0-100
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● Product CO: Final Solution (mol/mol inlet C)
Final solution for the amount of carbon monoxide in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.0
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0-100
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● Product H2: Is Initial Guess Set?
This box is always checked to indicate that an initial guess must be specified for the amount of hydrogen in the product gas.
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Yes
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Yes/No
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○ Product H2: Initial Guess (mol/mol inlet C)
Initial guess for the amount of hydrogen in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.1
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0-100
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● Product H2: Final Solution (mol/mol inlet C)
Final solution for the amount of hydrogen in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.0
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0-100
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● Product CH4: Is Initial Guess Set?
This box is always checked to indicate that an initial guess must be specified for the amount of methane in the product gas.
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Yes
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Yes/No
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○ Product CH4: Initial Guess (mol/mol inlet C)
Initial guess for the amount of methane in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.2
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0-100
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● Product CH4: Final Solution (mol/mol inlet C)
Final solution for the amount of methane in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.0
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0-100
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● Product H2O: Is Initial Guess Set?
This box is always unchecked to indicate that the initial guess for the amount of water vapor in the product gas is always calculated by the program.
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No
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Yes/No
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● Product H2O: Initial Guess (mol/mol inlet C)
Initial guess for the amount of water vapor in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.0
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0-100
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● Product H2O: Final Solution (mol/mol inlet C)
Final solution for the amount of water vapor in the product gas (expressed in moles produced per mol of elemental carbon in the supplied fuel).
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0.0
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0-100
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● Lambda of C: Is Initial Guess Set?
Lagrange multiplier of the carbon element. Shown only if chemical equilibrium is based on Gibbs Energy Minimization. In that case, this box is always checked to indicate that an initial guess must be specified for this Lagrange multiplier.
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No
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Yes/No
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○ Lambda of C: Initial Guess
Initial guess for the Lagrange multiplier of the carbon element.
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0.0
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0-100
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● Lambda of C: Final Solution
Final solution for the Lagrange multiplier of the carbon element.
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0.0
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0-100
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● Lambda of H: Is Initial Guess Set?
Lagrange multiplier of the hydrogen element. Shown only if chemical equilibrium is based on Gibbs Energy Minimization. In that case, this box is always checked to indicate that an initial guess must be specified for this Lagrange multiplier.
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No
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Yes/No
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○ Lambda of H: Initial Guess
Initial guess for the Lagrange multiplier of the hydrogen element.
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0.0
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0-100
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● Lambda of H: Final Solution
Returns the final solution for the Lagrange multiplier of the hydrogen element.
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0.0
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0-100
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● Lambda of O: Is Initial Guess Set?
The Lagrange multiplier of the oxygen element. Shown only if chemical equilibrium is based on Gibbs Energy Minimization. In that case, this box is always checked to indicate that an initial guess must be specified for this Lagrange multiplier.
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No
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Yes/No
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○ Lambda of O: Initial Guess
Initial guess for the Lagrange multiplier of the oxygen element.
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0.0
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0-100
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● Lambda of O: Final Solution
Final solution for the Lagrange multiplier of the oxygen element.
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0.0
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0-100
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● Final Temperature: Is Initial Guess Set?
If the “Set Final Temperature” thermal mode option is selected through the Operating Conditions tab, then this box will be always checked to indicate that an initial guess of final temperature must be specified. But if one of the other two thermal mode options is selected (“Adiabatic” or “Set Heating Duty”), then this box will be always unchecked to indicate that no initial guess is required for the final temperature.
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Yes
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Yes/No
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○ Final Temperature: Initial Guess (oC)
Initial guess for the gasification temperature.
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800.0
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Positive
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● Final Temperature: Final Solution (oC)
Final solution for the final temperature.
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25.0
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Positive
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