WOLFRAM SYSTEMMODELER

EquilibriumDrumBoiler

Simple Evaporator with two states, see Astroem, Bell: Drum-boiler dynamics, Automatica 36, 2000, pp.363-378

Wolfram Language

In[1]:=
SystemModel["Modelica.Fluid.Examples.DrumBoiler.BaseClasses.EquilibriumDrumBoiler"]
Out[1]:=

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

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: allow flow reversal, false restricts 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)

port_a

Type: FluidPort_a

Description: Fluid connector a (positive design flow direction is from port_a to port_b)

port_b

Type: FluidPort_b

Description: Fluid connector b (positive design flow direction is from port_a to port_b)

heatPort

Type: HeatPort_a

V

Type: RealOutput

Description: liquid volume

Components (2)

system

Type: System

Description: System wide properties

sat

Type: SaturationProperties

Description: State vector to compute saturation properties

Used in Examples (1)

DrumBoiler

Modelica.Fluid.Examples.DrumBoiler

Complete drum boiler model, including evaporator and supplementary components