BuildingSystems.Fluid.Interfaces.EightPortHeatMassExchanger

# .BuildingSystems.Fluid.Interfaces.EightPortHeatMassExchanger

Model transporting four fluid streams between eight ports with storing mass or energy

## Information

This component transports four fluid streams between eight ports. It provides the basic model for implementing a dynamic heat exchanger.

The model can be used as-is, although there will be no heat or mass transfer between the four fluid streams. To add heat transfer, heat flow can be added to the heat port of the four volumes.

#### Implementation

The variable names follow the conventions used in Modelica.Fluid.Examples.HeatExchanger.BaseClasses.BasicHX.

## Revisions

- April 14, 2020, by Michael Wetter:
  Changed `homotopyInitialization` to a constant.
  This is for IBPSA, #1341.
- July 18, 2018, by Massimo Cimmino:
  Remove start values of m_flow and dp variables.

- July 2014, by Damien Picard:
  First implementation.

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