Modelica.Thermal.FluidHeatFlow.Sensors

Ideal sensors to measure port properties

Information

This package contains sensors:

pSensor: absolute pressure
TSensor: absolute temperature (Kelvin)
dpSensor: pressure drop between flowPort_a and flowPort_b
dTSensor: temperature difference between flowPort_a and flowPort_b
m_flowSensor: measures mass flow rate
V_flowSensor: measures volume flow rate
H_flowSensor: measures enthalpy flow rate

Some of the sensors do not need access to medium properties for measuring, but it is necessary to define the medium in the connector (check of connections).
Thermodynamic equations are defined in partial models (package Interfaces.Partials).
All sensors are considered massless, they do not change mass flow or enthalpy flow.

Main Authors:

Anton Haumer
Technical Consulting & Electrical Engineering
A-3423 St.Andrae-Woerdern, Austria
email: a.haumer@haumer.at

Dr. Christian Kral
Austrian Institute of Technology, AIT
Giefinggasse 2
A-1210 Vienna, Austria

This Modelica package is free software and the use is completely at your own risk; it can be redistributed and/or modified under the terms of the Modelica License 2. For license conditions (including the disclaimer of warranty) see Modelica.UsersGuide.ModelicaLicense2 or visit https://www.modelica.org/licenses/ModelicaLicense2.

Extends from Modelica.Icons.SensorsPackage (Icon for packages containing sensors).

Package Content

Name	Description
PressureSensor	Absolute pressure sensor
TemperatureSensor	Absolute temperature sensor
RelPressureSensor	Pressure difference sensor
RelTemperatureSensor	Temperature difference sensor
MassFlowSensor	Mass flow sensor
VolumeFlowSensor	Volume flow sensor
EnthalpyFlowSensor	Enthalpy flow sensor

Modelica.Thermal.FluidHeatFlow.Sensors.PressureSensor

Absolute pressure sensor

Information

pSensor measures the absolute pressure.
Thermodynamic equations are defined by Partials.AbsoluteSensor.

Extends from Interfaces.Partials.AbsoluteSensor (Partial model of absolute sensor).

Parameters

Name Description

medium Sensor's medium

Name	Description
medium	Sensor's medium

Connectors

Name Description

flowPort

Name	Description
flowPort

Modelica.Thermal.FluidHeatFlow.Sensors.TemperatureSensor

Absolute temperature sensor

Information

TSensor measures the absolute temperature (Kelvin).
Thermodynamic equations are defined by Partials.AbsoluteSensor.

Extends from Interfaces.Partials.AbsoluteSensor (Partial model of absolute sensor).

Parameters

Name Description

medium Sensor's medium

Name	Description
medium	Sensor's medium

Connectors

Name Description

flowPort

Name	Description
flowPort

Modelica.Thermal.FluidHeatFlow.Sensors.RelPressureSensor

Pressure difference sensor

Information

dpSensor measures the pressure drop between flowPort_a and flowPort_b.
Thermodynamic equations are defined by Partials.RelativeSensor.

Extends from Interfaces.Partials.RelativeSensor (Partial model of relative sensor).

Parameters

Name Description

medium Sensor's medium

Name	Description
medium	Sensor's medium

Connectors

Name Description

flowPort_a

flowPort_b

Name	Description
flowPort_a
flowPort_b

Modelica.Thermal.FluidHeatFlow.Sensors.RelTemperatureSensor

Temperature difference sensor

Information

dTSensor measures the temperature difference between flowPort_a and flowPort_b.
Thermodynamic equations are defined by Partials.RelativeSensor.
Note: Connected flowPorts have the same temperature (mixing temperature)!
Since mixing my occur, the outlet temperature of a component may be different from the connector's temperature.
Outlet temperature is defined by variable T of the corresponding component.

Extends from Interfaces.Partials.RelativeSensor (Partial model of relative sensor).

Parameters

Name Description

medium Sensor's medium

Name	Description
medium	Sensor's medium

Connectors

Name Description

flowPort_a

flowPort_b

Name	Description
flowPort_a
flowPort_b

Modelica.Thermal.FluidHeatFlow.Sensors.MassFlowSensor

Mass flow sensor

Information

m_flowSensor measures the mass flow rate.
Thermodynamic equations are defined by Partials.FlowSensor.

Extends from Interfaces.Partials.FlowSensor (Partial model of flow sensor).

Parameters

Name Description

medium Medium in the component

T0fixed Initial temperature guess value or fixed

Name	Description
medium	Medium in the component
T0fixed	Initial temperature guess value or fixed

Connectors

Name Description

flowPort_a

flowPort_b

Name	Description
flowPort_a
flowPort_b

Modelica.Thermal.FluidHeatFlow.Sensors.VolumeFlowSensor

Volume flow sensor

Information

V_flowSensor measures the volume flow rate.
Thermodynamic equations are defined by Partials.FlowSensor.

Extends from Interfaces.Partials.FlowSensor (Partial model of flow sensor).

Parameters

Name Description

medium Medium in the component

T0fixed Initial temperature guess value or fixed

Name	Description
medium	Medium in the component
T0fixed	Initial temperature guess value or fixed

Connectors

Name Description

flowPort_a

flowPort_b

Name	Description
flowPort_a
flowPort_b

Modelica.Thermal.FluidHeatFlow.Sensors.EnthalpyFlowSensor

Enthalpy flow sensor

Information

H_flowSensor measures the enthalpy flow rate.
Thermodynamic equations are defined by Partials.FlowSensor.

Extends from Interfaces.Partials.FlowSensor (Partial model of flow sensor).

Parameters

Name Description

medium Medium in the component

T0fixed Initial temperature guess value or fixed

Name	Description
medium	Medium in the component
T0fixed	Initial temperature guess value or fixed

Connectors

Name Description

flowPort_a

flowPort_b

Name	Description
flowPort_a
flowPort_b

Automatically generated Mon Sep 23 17:21:09 2013.