Modelica.Thermal.HeatTransfer.Fahrenheit

Information

The components of this package are provided for the convenience of people working mostly with Fahrenheit units, since all models in package HeatTransfer are based on Kelvin units.

Note, that in package SIunits.Conversions, functions are provided to convert between the units Kelvin, degree Celsius, degree Fahrenheit and degree Rankine. These functions allow, e.g., a direct conversion of units at all places where Kelvin is required as parameter. Example:

    import SIunits.Conversions.*;
    Modelica.Thermal.HeatTransfer.HeatCapacitor C(T0 = from_degF(70));

Extends from Modelica.Icons.VariantsPackage (Icon for package containing variants).

Package Content

Name	Description
ToKelvin	Conversion block from degFahrenheit to Kelvin
FromKelvin	Conversion from Kelvin to degFahrenheit
FixedTemperature	Fixed temperature boundary condition in degFahrenheit
PrescribedTemperature	Variable temperature boundary condition in degFahrenheit
TemperatureSensor	Absolute temperature sensor in degFahrenheit

Modelica.Thermal.HeatTransfer.Fahrenheit.ToKelvin

Information

This component converts a input signal from degree Fahrenheit to Kelvin and provides is as output signal.

Connectors

Type	Name	Description
input RealInput	Fahrenheit
output RealOutput	Kelvin

Modelica definition

model ToKelvin "Conversion block from degFahrenheit to Kelvin"

  Modelica.Blocks.Interfaces.RealInput Fahrenheit;
  Modelica.Blocks.Interfaces.RealOutput Kelvin;
equation 
  Kelvin = from_degF(Fahrenheit);
end ToKelvin;

Modelica.Thermal.HeatTransfer.Fahrenheit.FromKelvin

Information

This component converts all input signals from Kelvin to Fahrenheit and provides them as output signals.

Parameters

Type	Name	Default	Description
Integer	n	1	Number of inputs (= number of outputs)

Connectors

Type	Name	Description
input RealInput	Kelvin
output RealOutput	Fahrenheit

Modelica definition

model FromKelvin "Conversion from Kelvin to degFahrenheit"
  parameter Integer n=1 "Number of inputs (= number of outputs)";
  Modelica.Blocks.Interfaces.RealInput Kelvin;
  Modelica.Blocks.Interfaces.RealOutput Fahrenheit;
equation 
  Fahrenheit = to_degF(Kelvin);
end FromKelvin;

Modelica.Thermal.HeatTransfer.Fahrenheit.FixedTemperature

Information

This model defines a fixed temperature T at its port in [degF], i.e., it defines a fixed temperature as a boundary condition.

Parameters

Type	Name	Default	Description
Temperature_degF	T		Fixed Temperature at the port [degF]

Connectors

Type	Name	Description
HeatPort_b	port

Modelica definition

model FixedTemperature 
  "Fixed temperature boundary condition in degFahrenheit"
  parameter Modelica.SIunits.Conversions.NonSIunits.Temperature_degF T 
    "Fixed Temperature at the port";
  Interfaces.HeatPort_b port;
equation 
  port.T = from_degF(T);
end FixedTemperature;

Modelica.Thermal.HeatTransfer.Fahrenheit.PrescribedTemperature

Information

This model represents a variable temperature boundary condition The temperature value in [degF] is given by the input signal to the model. The effect is that an instance of this model acts as an infinite reservoir able to absorb or generate as much energy as required to keep the temperature at the specified value.

Connectors

Type	Name	Description
HeatPort_b	port
input RealInput	T

Modelica definition

model PrescribedTemperature 
  "Variable temperature boundary condition in degFahrenheit"

  Interfaces.HeatPort_b port;
  Modelica.Blocks.Interfaces.RealInput T;
equation 
  port.T = from_degF(T);
end PrescribedTemperature;

Modelica.Thermal.HeatTransfer.Fahrenheit.TemperatureSensor

Information

This is an ideal absolute temperature sensor which returns the temperature of the connected port in Fahrenheit as an output signal. The sensor itself has no thermal interaction with whatever it is connected to. Furthermore, no thermocouple-like lags are associated with this sensor model.

Connectors

Type	Name	Description
output RealOutput	T
HeatPort_a	port

Modelica definition

model TemperatureSensor 
  "Absolute temperature sensor in degFahrenheit"

  Modelica.Blocks.Interfaces.RealOutput T;
  Interfaces.HeatPort_a port;
equation 
  T = to_degF(port.T);
  port.Q_flow = 0;
end TemperatureSensor;