Temperature difference sensor

Temperature difference between ports a and b.

  • signal
  • thermal
  • Modelica Standard Library
  • 3 ports
BlockTemperature difference sensorKindrelTemperatureSensorLibraryThermal

Description

Measures the temperature difference between two heat ports. It draws no heat from either.

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 Temperature difference sensor 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 resistorConvectionRadiationFixed temperatureTemperature sourceFixed heat flowHeat flow sourceTemperature sensorHeat flow sensor

Ports

Outputs 1

  • ΔTT_relsignal · K

    Temperature difference port_a.T − port_b.T, in kelvin.

Conserving terminals 2

  • aport_athermal

    Heat port a. No heat flows through it.

  • bport_bthermal

    Heat port b. No heat flows through it.

Equations

Modelica
T_rel = port_a.T − port_b.T
port_a.Q_flow = 0, port_b.Q_flow = 0

Implementation

Modelica Standard Library 4.1.0Modelica.Thermal.HeatTransfer.Sensors.RelTemperatureSensor
MSL documentation

See also

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