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remove scaling warning and enable minimal off time as usual in heat p…
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FWuellhorst committed May 15, 2024
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Showing 1 changed file with 2 additions and 12 deletions.
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Expand Up @@ -21,7 +21,6 @@ model AirToWater2D_OneRoomRadiator
dpCon_nominal(displayUnit="Pa") = 2000,
dpEva_nominal(displayUnit="Pa") = 200,
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
QCoo_flow_nominal=-10000,
TConHea_nominal=rad.TRad_nominal,
TEvaHea_nominal=283.15,
TConCoo_nominal=oneRooRadHeaPumCtr.TRadMinSup,
Expand All @@ -35,7 +34,8 @@ model AirToWater2D_OneRoomRadiator
redeclare
IBPSA.Fluid.HeatPumps.ModularReversible.Controls.Safety.Data.Wuellhorst2021
safCtrPar(
use_minOnTime=false,
use_minOnTime=true,
minOnTime=300,
use_minOffTime=true,
minOffTime=300,
use_maxCycRat=true)) "Reversible heat pump based on 2D table data"
Expand Down Expand Up @@ -87,16 +87,6 @@ equation
heat pump model. Please check the associated documentation for
further information.
</p>
<p>
Furthermore, this example is useful to understand the different sizing options.
The selected value of <code>QCoo_flow_nominal</code> leads to
conflicting scaling factors for heating and cooling operation. This triggers a warning.
Using the default <code>QCoo_flow_nominal</code>, the warning disappears.
Increasing (or decreasing) it, the number of on-off switches will increase (or decrease)
in cooling operation due to the low inertia of the system.
In real air-to-water systems, thermal energy storage would be used to
decrease cycling if the device is oversized.
</p>
<p>
Please check the documentation of
<a href=\"modelica://IBPSA.Fluid.HeatPumps.ModularReversible.Examples.BaseClasses.PartialOneRoomRadiator\">
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