BuildingSystems.Fluid.HeatExchangers.ConstantEffectiveness

# .BuildingSystems.Fluid.HeatExchangers.ConstantEffectiveness

Heat exchanger with constant effectiveness

## Information

Model for a heat exchanger with constant effectiveness.

This model transfers heat in the amount of

Q = Qmax ε,

where ε is a constant effectiveness and Qmax is the maximum heat that can be transferred.

For a heat and moisture exchanger, use BuildingSystems.Fluid.MassExchangers.ConstantEffectiveness instead of this model.

## Revisions

- August 13, 2013 by Michael Wetter:
  Corrected error in the documentation.
- July 30, 2013 by Michael Wetter:
  Updated model to use new variable `mWat_flow` in the base class.
- January 28, 2010, by Michael Wetter:
  Added regularization near zero flow.
- October 2, 2009, by Michael Wetter:
  Changed computation of inlet temperatures to use `state_*_inflow` which is already known in base class.
- April 28, 2008, by Michael Wetter:
  First implementation.

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