.AixLib.Fluid.Storage.BaseClasses.IndirectTankHeatExchanger

Information

This model is a heat exchanger with a moving fluid on one side and a stagnant fluid on the other. It is intended for use when a heat exchanger is submerged in a stagnant fluid. For example, the heat exchanger in a storage tank which is part of a solar thermal system.

This component models the fluid in the heat exchanger, convection between the fluid and the heat exchanger, and convection from the heat exchanger to the surrounding fluid.

The model is based on AixLib.Fluid.HeatExchangers.BaseClasses.HACoilInside and AixLib.Fluid.HeatExchangers.BaseClasses.HANaturalCylinder.

The fluid ports are intended to be connected to a circulated heat transfer fluid while the heat port is intended to be connected to a stagnant fluid.

Contents

Name	Description
MediumHex	Heat transfer fluid flowing through the heat exchanger
MediumTan	Heat transfer fluid inside the tank

Revisions

• March 7, 2022, by Michael Wetter:
  Set final massDynamics=energyDynamics.
  This is for #1542.
• April 9, 2021, by Michael Wetter:
  Corrected placement of each keyword.
  See Buildings, PR #2440.
• April 14, 2020, by Michael Wetter:
  Changed homotopyInitialization to a constant.
  This is for IBPSA, #1341.
• June 7, 2018 by Filip Jorissen:
  Copied model from Buildings and update the model accordingly. This is for #314.
• January 7, 2016, by Filip Jorissen:
  Propagated flowDependent and temperatureDependent in hAPipIns. This is for issue #454.
• September 24, 2015 by Michael Wetter:
  Set fixed attribute in cap.T to avoid unspecified initial conditions.
• July 2, 2015, by Michael Wetter:
  Set prescribedHeatFlowRate=false in control volume.
• July 1, 2015, by Filip Jorissen:
  Added parameter energyDynamicsSolid. This is for #434.
• March 28, 2015, by Filip Jorissen:
  Propagated allowFlowReversal.
• August 29, 2014, by Michael Wetter:
  Introduced MediumTan for the tank medium, and assigned Medium to be equal to MediumHex. This is to correct issue #271.
• June 18, 2014, by Michael Wetter:
  Set initial equations for cap, and renamed this instance from Cap to cap. This was done to avoid a warning during translation, and to comply with the coding convention.
• October 8, 2013, by Michael Wetter:
  Removed parameter show_V_flow.
• January 29, 2013, by Peter Grant:
  First implementation.