modelHeaterCooler_u

Model that tests a heat exchanger model with reverse flow
Diagram of HeaterCooler_uOpen the diagram
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Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

Model that tests the basic class that is used for the heater models. It adds and removes heat for forward and reverse flow. The top and bottom models should give similar results, although the sign of the temperature difference over the components differ because of the reverse flow. The model computes differences in results that are expected to be close to each other after the initial transients decayed. All temperature sensors are configured as steady-state sensors to avoid differences in temperature due to the dynamic response of the sensor.

Components

TypeNameDefaultDescription
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea1Heater and cooler
Modelica.Blocks.Sources.ConstantTDbDrybulb temperature
Buildings.Fluid.Sources.Boundary_pTsou_1
Buildings.Fluid.FixedResistances.PressureDropres_11
Buildings.Fluid.FixedResistances.PressureDropres_12
Buildings.Fluid.Sources.Boundary_pTsin_1
Modelica.Blocks.Sources.ConstantPOut
Modelica.Blocks.Sources.RampuControl signal
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea2Heater and cooler
Modelica.Blocks.Math.Gaingain
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea3Heater and cooler
Buildings.Fluid.FixedResistances.PressureDropres_2
Buildings.Fluid.FixedResistances.PressureDropres_3
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea4Heater and cooler
Buildings.Fluid.FixedResistances.PressureDropres_4
Buildings.Fluid.MixingVolumes.MixingVolumemix1
Modelica.Blocks.Math.Addche1
Modelica.Blocks.Math.Addche2
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea5Heater and cooler
Buildings.Fluid.FixedResistances.PressureDropres_1
Buildings.Fluid.FixedResistances.PressureDropres_5
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea6Heater and cooler
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea7Heater and cooler
Buildings.Fluid.FixedResistances.PressureDropres_6
Buildings.Fluid.FixedResistances.PressureDropres_7
Buildings.Fluid.HeatExchangers.HeaterCooler_uhea8Heater and cooler
Buildings.Fluid.FixedResistances.PressureDropres_8
Buildings.Fluid.MixingVolumes.MixingVolumemix2
Modelica.Blocks.Math.Addche9
Modelica.Blocks.Math.Addche10
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem2aTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem2bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem1aTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem1bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem3aTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem3bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem4aTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem4bTemperature sensor
Modelica.Blocks.Math.Addche3
Modelica.Blocks.Math.Addche4
Modelica.Blocks.Math.Addche5
Modelica.Blocks.Math.Addche6
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem6bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem6aTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem5bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem5aTemperature sensor
Modelica.Blocks.Math.Addche7
Modelica.Blocks.Math.Addche8
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem8bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem8aTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem7bTemperature sensor
Buildings.Fluid.Sensors.TemperatureTwoPortsenTem7aTemperature sensor

Contents

NameDescription
Medium

Revisions

  • November 2, 2016, by Michael Wetter:
    Changed assertions to blocks that compute the difference, and added the difference to the regression results.
    This is for issue 564.
  • May 30, 2014, by Michael Wetter:
    Changed initialization of mass dynamics to avoid overspecified system of equations if the medium model is incompressible.
  • January 24, 2013, by Michael Wetter:
    Increased parameter startTime of the assert block and set initial conditions to Modelica.Fluid.Types.Dynamics.FixedInitial.
  • July 11, 2011, by Michael Wetter:
    Changed model to sensors with two fluid ports. Moved model to Buildings.Fluid.Interfaces.Examples.
  • April 17, 2008, by Michael Wetter:
    First implementation.