.TransiEnt.Basics.Functions.GasProperties.getIdealGasNCV_xM

Information

1. Purpose of model

This model is used to calculate the net calorific value (NCV), also known as lower heating value (LHV) of a fuel gas mixture based on mole fractions and molar mass and respective molar calorific values from a record.

2. Level of detail, physical effects considered, and physical insight

(no remarks)

3. Limits of validity

(no remarks)

4. Interfaces

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5. Nomenclature

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6. Governing Equations

(no remarks)

7. Remarks for Usage

If there are components in the gas which don't have a corresponding entry in the NCVm values record, they will just be ignored, giving a faulty calorific value. The function will throw a warning.

NCVIn was added to give the possibility to define a constant calorific value. If this value is set to 0, the NCV will be calculated by the composition of the medium.

8. Validation

Tested in check model "TransiEnt.Basics.Functions.GasProperties.Check.TestNCVCalculation"

9. References

(no remarks)

10. Version History

Created by Lisa Andresen (andresen@tuhh.de), Sep 2016

Interface

function getIdealGasNCV_xM
  import TransiEnt;
  extends TransiEnt.Basics.Icons.Function;
  input TILMedia.GasTypes.BaseGas idealGasType "Ideal gas type" annotation(
    choicesAllMatching = true);
  input SI.MoleFraction[:] x_in "Mole fractions";
  input SI.MolarMass M_in "Molar mass";
  input SI.SpecificEnthalpy NCVIn "Set this to a specific value for a constant NCV or to zero for NCV calculation";
  output SI.SpecificEnthalpy NCVOut "Returned NCV";
end getIdealGasNCV_xM;