modelRealGasNCV_xi_Block
Extends from TransiEnt.Basics.Icons.Block, TransiEnt.Basics.Media.Base.RealGas_MediaBaseNCV.
Information
1. Purpose of model
This model is used to calculate the mass specific net calorific value (NCV), also known as lower heating value (LHV) of a fuel gas mixture based on mass fractions and repective mass weighted 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
(no remarks)
5. Nomenclature
xi_in is the mass fraction
NCV is the net calorific value
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 NCV 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
(no validation or testing necessary)
9. References
(no remarks)
10. Version History
Created by Jan Westphal (j.westphal@tuhh.de), June 2019, based on a model of Lisa Andresen
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| TILMedia.VLEFluidTypes.BaseVLEFluid | realGasType (from RealGas_MediaBaseNCV) | ||
| SI.SpecificEnthalpy | NCVIn (from RealGas_MediaBaseNCV) | 0.0 | Set this to a specific value for a constant NCV or to zero for NCV calculation |
| SI.SpecificEnthalpy | NCV_vec (from RealGas_MediaBaseNCV) | Functions.GasProperties.getRealGasNCVVector(realGasType, realGasType.nc) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Interfaces.General.MassFractionIn[realGasType.nc - 1] | xi_input | Mass fraction | |
| TransiEnt.Basics.Interfaces.General.SpecificEnthalpyOut | NCV | Net calorific value |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.SimCenter | simCenter (from RealGas_MediaBaseNCV) | ||
| SI.MassFraction | xi_in (from RealGas_MediaBaseNCV) | Mass fractions |