This component transports two fluid streams between four 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 two fluid streams.
To add heat transfer, heat flow can be added to the heat port of the two volumes.
See for example
BuildingSystems.Fluid.Chillers.Carnot_y.
To add moisture input into (or moisture output from) volume vol2
,
the model can be replaced with
BuildingSystems.Fluid.MixingVolumes.MixingVolumeMoistAir.
The variable names follow the conventions used in Modelica.Fluid.Examples.HeatExchanger.BaseClasses.BasicHX.
massDynamics
.homotopyInitialization
to a constant.vol1
replaceable. This is required for
Buildings, issue 1013.
use_dh
is no longer a parameter in the pressure drop model.quantity
attributes.
extends
statement.
This is for issue
#299.
mSenFac
in
vol1
and vol2
.
This is for issue
#258.
allowFlowReversal
to
instances vol1
and vol2
.
This is for issue
#412.
annotation(Evaluate=true)
for parameters tau1
and tau2
.
This is needed to allow changing the time constant after translation.
import Modelica.Constants
statement.
show_V_flow
.
sum
operator.
m_flow_small
as it is no
longer used in its base class.
h_outflow_a1_start
,
h_outflow_b1_start
,
h_outflow_a2_start
and
h_outflow_b2_start
, and
declared them as final.
vol1.C
and vol2.C
.
tau = 0
.
stateSelect=StateSelect.always
for temperature of volume 1.
Delays.DelayFirstOrder
with instances of
MixingVolumes.MixingVolume
. This allows to extract liquid for a condensing cooling
coil model.