WOLFRAM SYSTEM MODELER
EquilibriumDrumBoilerSimple Evaporator with two states, see Åström, Bell: Drum-boiler dynamics, Automatica 36, 2000, pp.363-378 |
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Wolfram Language
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SystemModel["Modelica.Fluid.Examples.DrumBoiler.BaseClasses.EquilibriumDrumBoiler"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Model of a simple evaporator with two states. The model assumes two-phase equilibrium inside the component; saturated steam goes out of the steam outlet.
References: Åström, Bell: Drum-boiler dynamics, Automatica 36, 2000, pp.363-378
Parameters (8)
| m_D |
Value: Type: Mass (kg) Description: Mass of surrounding drum metal |
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| cp_D |
Value: Type: SpecificHeatCapacity (J/(kg⋅K)) Description: Specific heat capacity of drum metal |
| V_t |
Value: Type: Volume (m³) Description: Total volume inside drum |
| p_start |
Value: system.p_start Type: AbsolutePressure (Pa) Description: Start value of pressure |
| V_l_start |
Value: V_t / 2 Type: Volume (m³) Description: Start value of liquid volumeStart value of volume |
| allowFlowReversal |
Value: system.allowFlowReversal Type: Boolean Description: = true, if flow reversal is enabled, otherwise restrict flow to design direction (port_a -> port_b) |
| energyDynamics |
Value: system.energyDynamics Type: Dynamics Description: Formulation of energy balance |
| massDynamics |
Value: system.massDynamics Type: Dynamics Description: Formulation of mass balance |
Connectors (4)
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port_a |
Type: FluidPort_a Description: Fluid connector a (positive design flow direction is from port_a to port_b) |
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port_b |
Type: FluidPort_b Description: Fluid connector b (positive design flow direction is from port_a to port_b) |
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heatPort |
Type: HeatPort_a Description: Thermal port for 1-dim. heat transfer (filled rectangular icon) |
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V |
Type: RealOutput Description: Liquid volume |
Components (2)
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system |
Type: System Description: System wide properties |
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sat |
Type: SaturationProperties Description: State vector to compute saturation properties |
Used in Examples (1)
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Modelica.Fluid.Examples.DrumBoiler Complete drum boiler model, including evaporator and supplementary components |
Revisions
- Dec 2008
by Rüdiger Franke:
Adapt initialization to new Types.Dynamics - 2 Nov 2005
by Francesco Casella:
Initialization options fixed - 6 Sep 2005
Model by Rüdiger Franke
See Franke, Rode, Krüger: On-line Optimization of Drum Boiler Startup, 3rd International Modelica Conference, Linköping, 2003.
Modified after the 45th Design Meeting