This is a model of a stratified storage tank for thermal energy storage with built-in heat exchanger.
See the Buildings.Fluid.Storage.UsersGuide for more information.
The model requires at least 4 fluid segments. Hence, set nSeg
to 4 or higher.
Name | Description |
---|---|
Medium in the heat exchanger |
massDynamics
and massDynamicsHex
.hHex_a < hHex_b
, e.g., the port a of the heat exchanger
is below the port b.
This closes
issue 531.
energyDynamicsHexSolid=energyDynamicsHex
rather than
energyDynamicsHexSolid=Modelica.Fluid.Types.Dynamics.DynamicFreeInitial
as users are not likely to want different settings.
energyDynamicsHexSolid
.
This is for
#434.
allowFlowReversal
and m_flow_small
.
abs()
function in the assignment of the parameter
nSegHexTan
as the return value of abs()
is a Real
which causes a type error during model check.
botHexSeg
.
Without this function, this parameter can take on zero, which is wrong
because the Modelica uses one-based arrays.
Revised the model as the old version required the porta
of the heat exchanger to be located higher than portb.
This makes sense if the heat exchanger is used to heat up the tank,
but not if it is used to cool down a tank, such as in a cooling plant.
The following parameters were changed:
hexTopHeight
to hHex_a
.hexBotHeight
to hHex_b
.topHexSeg
to segHex_a
,
and made it protected as this is deduced from hHex_a
.botHexSeg
to segHex_b
,
and made it protected as this is deduced from hHex_b
.port_a1
to portHex_a
.port_b1
to portHex_b
.m_flow_nominal_tank
which was not used.