modelDryCoilCounterFlowPControl

Model that demonstrates use of a heat exchanger without condensation and with feedback control
Diagram of DryCoilCounterFlowPControlOpen the diagram
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Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

This model demonstrates the use of Buildings.Fluid.HeatExchangers.DryCoilCounterFlow. The valve on the water-side is regulated to track a setpoint temperature for the air outlet.

Parameters

TypeNameDefaultDescription
Modelica.Units.SI.TemperatureT_a1_nominal5 + 273.15
Modelica.Units.SI.TemperatureT_b1_nominal10 + 273.15
Modelica.Units.SI.TemperatureT_a2_nominal30 + 273.15
Modelica.Units.SI.TemperatureT_b2_nominal15 + 273.15
Modelica.Units.SI.MassFlowRatem1_flow_nominal0.1Nominal mass flow rate medium 1
Modelica.Units.SI.MassFlowRatem2_flow_nominalm1_flow_nominal*4200/1000*(T_a1_nominal - T_b1_nominal)/(T_b2_nominal - T_a2_nominal)Nominal mass flow rate medium 2

Components

TypeNameDefaultDescription
Buildings.Fluid.Sources.Boundary_pTsin_2
Buildings.Fluid.Sources.Boundary_pTsou_2
Buildings.Fluid.Sources.Boundary_pTsin_1
Buildings.Fluid.Sources.Boundary_pTsou_1
Buildings.Fluid.FixedResistances.PressureDropres_2
Buildings.Fluid.FixedResistances.PressureDropres_1
Buildings.Fluid.Sensors.TemperatureTwoPorttemSen
Buildings.Fluid.Actuators.Valves.TwoWayEqualPercentagevalValve model
Modelica.Blocks.Sources.TimeTableTSetSetpoint temperature
Buildings.Fluid.HeatExchangers.DryCoilCounterFlowhex
Modelica.Blocks.Sources.Constantconst
Buildings.Utilities.Psychrometrics.X_pTphix_pTphi
Modelica.Blocks.Sources.Constantconst1
Buildings.Controls.Continuous.LimPIDconController
Modelica.Blocks.Sources.RampTWatWater temperature, raised to high value at t=3000 s

Contents

NameDescription
Medium1
Medium2

Revisions

  • December 22, 2014 by Michael Wetter:
    Removed Modelica.Fluid.System to address issue #311.
  • March 1, 2013, by Michael Wetter:
    Added nominal pressure drop for valve as this parameter no longer has a default value.
  • May 27, 2010, by Michael Wetter:
    First implementation.