modelTableBasedGasBurningConsumer_VariableGasComposition
Extends from TransiEnt.Basics.Icons.Consumer (Icon for consumers).
Information
1. Purpose of model
Table based model of gas consumer. Adaption of model 'TableBasedGasBurningConsumer'. The caluclation in this model is based on the gas position at the input gas port (no constant heat of combustion).
2. Level of detail, physical effects considered, and physical insight
Assumptions:
Constant heat loss to ambience via radiation etc. (with lumped efficiency eta)
Constant tempearture of exhaust gas at output of heat exchanger (parameter T_exhaustgas)
3. Limits of validity
(no remarks)
4. Interfaces
gasIn: inlet for real gas
Q_flow: input for heat flow rate in [W]
5. Nomenclature
(no remarks)
6. Governing Equations
(no remarks)
7. Remarks for Usage
The usage of the model can be adapated by the following parameters:
use_Q_flow_input: Choose "true", if input is used to define heat flow.
consider_FlueGas_losses: Choose "true", if heat losses through flue gas is considered in addition to losses resulting from the parameter 'eta'. If "false" the parameter 'eta' represents the overall efficiency.
8. Validation
(no remarks)
9. References
(no remarks)
10. Version History
Model created by Oliver Schülting (oliver.schuelting@tuhh.de), Jun 2018
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| TILMedia.VLEFluidTypes.BaseVLEFluid | medium | simCenter.gasModel1 | |
| Boolean | change_of_sign | false | Change sign of output signal relative to table data |
| Real | constantfactor | 1.0 | Multiply output with constant factor |
| Modelica.Units.SI.Efficiency | eta | 0.95 | Efficiency of gas burner (heat loss to ambience) |
| Modelica.Units.SI.Temperature | T_exhaustgas | 80 + 273.15 | Temperature of exhaust gas after heat exchanger (defines exhaust gas heat loss) |
| Boolean | use_Q_flow_input | false | True, if Q_flow defined by variable input |
| Boolean | consider_FlueGas_losses | true | True, if flue gas losses are considered in addition to 'eta' |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.Basics.Interfaces.Gas.RealGasPortIn | gasIn | ||
| TransiEnt.Basics.Interfaces.Thermal.HeatFlowRateIn | Q_flow | Variable Heat Demand |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TransiEnt.SimCenter | simCenter | ||
| TransiEnt.ModelStatistics | modelStatistics | ||
| TransiEnt.Basics.Tables.GenericDataTable | consumerDataTable | ||
| TransiEnt.Components.Boundaries.Gas.BoundaryRealGas_Txim_flow | massFlowSink | ||
| Modelica.Blocks.Sources.RealExpression | m_flow_set | just for visualisation on diagram layer | |
| TransiEnt.Components.Statistics.Collectors.LocalCollectors.CollectGwpEmissionsElectric | collectGwpEmissions | ||
| Modelica.Units.SI.MassFlowRate | m_flow_gas_demand | ||
| TransiEnt.Components.Sensors.RealGas.NCVSensor | vleNCVSensor | ||
| Modelica.Units.SI.MassFlowRate | m_flow_cde_total |