Fixed temperature

Holds its port at a constant temperature.

  • thermal
  • Modelica Standard Library
  • 1 port
  • 1 parameter
BlockFixed temperatureKindfixedTemperatureLibraryThermal

Description

Holds its port at a constant temperature, supplying or absorbing whatever heat flow that takes. Use it for ambient air, a coolant, or a heat sink held at a known temperature.

Example

Cooling a hot part A 10 W part cools through a thermal resistance into a heatsink that convects and radiates to 20 °C.

10 WPart 100 J/KHeat flowR 2 K/WHeatsink 500 J/Kh·A 5 W/KConvectionAir 20 °CRadiationRoom 20 °CPart temperatureAcross R350 KHeld at 350 KG 1 W/KBody 100 J/K20 W at 1500 sHeaterBody temperature
In Gradara, select a Fixed temperature block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:ConstantStepHeat capacitorThermal conductorThermal resistorConvectionRadiationTemperature sourceFixed heat flowHeat flow sourceTemperature sensorHeat flow sensorTemperature difference sensor

Ports

Conserving terminals 1

  • Tportthermal

    Heat port held at T.

Parameters

  • TemperatureT293.15 K

    ≥ 0

    Temperature, in kelvin (293.15 K is 20 °C). Must be ≥ 0.

Equations

Modelica
port.T = T

Implementation

Modelica Standard Library 4.1.0Modelica.Thermal.HeatTransfer.Sources.FixedTemperature
MSL documentation

See also

Select a block in Gradara and press F1 to open its page offline.