Modelica.Thermal.HeatTransfer.Interfaces

Information

Package Content

Name	Description
HeatPort	Thermal port for 1-dim. heat transfer
HeatPort_a	Thermal port for 1-dim. heat transfer (filled rectangular icon)
HeatPort_b	Thermal port for 1-dim. heat transfer (unfilled rectangular icon)
Element1D	Partial heat transfer element with two HeatPort connectors that does not store energy
PartialElementaryConditionalHeatPort	Partial model to include a conditional HeatPort in order to dissipate losses, used for textual modeling, i.e., for elementary models
PartialElementaryConditionalHeatPortWithoutT	Partial model to include a conditional HeatPort in order to dissipate losses, used for textual modeling, i.e., for elementary models
PartialConditionalHeatPort	Partial model to include a conditional HeatPort in order to dissipate losses, used for graphical modeling, i.e., for building models by drag-and-drop

Modelica.Thermal.HeatTransfer.Interfaces.HeatPort

Information

Contents

Name	Description
T	Port temperature [K]
Q_flow	Heat flow rate (positive if flowing from outside into the component) [W]

Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a

Information

This connector is used for 1-dimensional heat flow between components. The variables in the connector are:

   T       Temperature in [Kelvin].
   Q_flow  Heat flow rate in [Watt].

According to the Modelica sign convention, a positive heat flow rate Q_flow is considered to flow into a component. This convention has to be used whenever this connector is used in a model class.

Note, that the two connector classes HeatPort_a and HeatPort_b are identical with the only exception of the different icon layout.

Contents

Name	Description
T	Port temperature [K]
Q_flow	Heat flow rate (positive if flowing from outside into the component) [W]

Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b

Information

This connector is used for 1-dimensional heat flow between components. The variables in the connector are:

   T       Temperature in [Kelvin].
   Q_flow  Heat flow rate in [Watt].

According to the Modelica sign convention, a positive heat flow rate Q_flow is considered to flow into a component. This convention has to be used whenever this connector is used in a model class.

Note, that the two connector classes HeatPort_a and HeatPort_b are identical with the only exception of the different icon layout.

Contents

Name	Description
T	Port temperature [K]
Q_flow	Heat flow rate (positive if flowing from outside into the component) [W]

Modelica.Thermal.HeatTransfer.Interfaces.Element1D

Information

This partial model contains the basic connectors and variables to allow heat transfer models to be created that do not store energy, This model defines and includes equations for the temperature drop across the element, dT, and the heat flow rate through the element from port_a to port_b, Q_flow.

By extending this model, it is possible to write simple constitutive equations for many types of heat transfer components.

Connectors

Name	Description
port_a
port_b

Modelica.Thermal.HeatTransfer.Interfaces.PartialElementaryConditionalHeatPort

Information

This partial model provides a conditional heat port for dissipating losses.

• If useHeatPort is set to false (default), no heat port is available, and the thermal loss power is dissipated internally. In this case, the parameter T specifies the fixed device temperature (the default for T = 20°C)
• If useHeatPort is set to true, the heat port is available.

If this model is used, the loss power has to be provided by an equation in the model which inherits from PartialElementaryConditionalHeatPort model (lossPower = ...). The device temperature TheatPort can be used to describe the influence of the device temperature on the model behaviour.

Parameters

Name	Description
useHeatPort	=true, if heatPort is enabled
T	Fixed device temperature if useHeatPort = false [K]

Connectors

Name	Description
heatPort	Optional port to which dissipated losses are transported in form of heat

Modelica.Thermal.HeatTransfer.Interfaces.PartialElementaryConditionalHeatPortWithoutT

Information

This partial model provides a conditional heat port for dissipating losses.

• If useHeatPort is set to false (default), no heat port is available, and the thermal loss power is dissipated internally.
• If useHeatPort is set to true, the heat port is available and must be connected from the outside.

If this model is used, the loss power has to be provided by an equation in the model which inherits from the PartialElementaryConditionalHeatPortWithoutT model (lossPower = ...).

Note, this partial model is used in cases, where heatPort.T (that is the device temperature) is not utilized in the model. If this is desired, inherit instead from partial model PartialElementaryConditionalHeatPort.

Parameters

Name	Description
useHeatPort	=true, if heatPort is enabled

Connectors

Name	Description
heatPort	Optional port to which dissipated losses are transported in form of heat

Modelica.Thermal.HeatTransfer.Interfaces.PartialConditionalHeatPort

Information

This partial model provides a conditional heat port for dissipating losses.

• If useHeatPort is set to false (default), no heat port is available, and the thermal loss power is dissipated internally. In this case, the parameter T specifies the fixed device temperature (the default for T = 20°C)
• If useHeatPort is set to true, the heat port is available.

If this model is used, the internalHeatPort has to be connected in the model which inherits from PartialElementaryConditionalHeatPort model. The device temperature internalHeatPort.T can be used to describe the influence of the device temperature on the model behaviour.

Parameters

Name	Description
useHeatPort	=true, if HeatPort is enabled
T	Fixed device temperature if useHeatPort = false [K]

Connectors

Name	Description
heatPort	Optional port to which dissipated losses are transported in form of heat