Thermodynamic Properties Sensor (TL)

Measure specific internal energy, density, and specific heat at constant pressure in thermal liquid networks

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Libraries:
Simscape / Foundation Library / Thermal Liquid / Sensors

Description

The Thermodynamic Properties Sensor (TL) block represents an ideal sensor that measures specific internal energy, density, and specific heat at constant pressure in a thermal liquid network. There is no mass or energy flow through the sensor.

The block measures these thermodynamic properties at the node connected to port A. All measurements are taken with respect to absolute zero.

Ports

Output

u — Specific internal energy measurement, kJ/kg

physical signal

Physical signal output port for measuring the specific internal energy of thermal liquid.

Dependencies

To enable this port, select the Internal energy check box.

ρ — Density measurement, kg/m^3

physical signal

Physical signal output port for measuring the density of thermal liquid.

Dependencies

To enable this port, select the Density check box.

cp — Specific heat at constant pressure measurement, kJ/(kg*K)

physical signal

Physical signal output port for measuring the thermal liquid specific heat at constant pressure.

Dependencies

To enable this port, select the Specific heat check box.

Conserving

A — Sensor inlet

thermal liquid

Thermal liquid conserving port. Connect this port to the node in the thermal liquid network where you want to measure the thermodynamic properties. All measurements are taken with respect to absolute zero.

Parameters

Internal energy — Control output port visibility for measuring specific internal energy

Off (default) | On

Selecting this check box exposes the output port u, which lets you measure the specific internal energy of thermal liquid.

Density — Control output port visibility for measuring density

On (default) | Off

Selecting this check box exposes the output port ρ, which lets you measure the thermal liquid density.

Specific heat — Control output port visibility for measuring specific heat

Off (default) | On

Selecting this check box exposes the output port cp, which lets you measure the thermal liquid specific heat at constant pressure.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2017a

R2023a: Usability enhancement for thermal liquid sensors

Thermal liquid sensor blocks with multiple output ports now have conditional port visibility on the block icon. You can use the block parameters to expose only the ports that you need for measurements in a particular model.

There is no compatibility impact when you use the Thermodynamic Properties Sensor (TL) block in your models. However, if you use this block in your custom composite components, you need to update the composite component code.

Old Syntax	New Syntax
sensor = foundation.thermal_liquid.sensors.thermodynamic_sensor;	sensor = foundation.thermal_liquid.sensors.thermodynamic_sensor(internal_energy=true, specific_heat=true);