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issue1337_Changing T_setpoint in PartialZone and PartialSurface for Heat Losses Calculation #1380

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issue1337_Changing T_setpoint in PartialZone and PartialSurface for Heat Losses Calculation #1380

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b475a32
Adding parameter T_setpoint in PartialZone and PartialSurface
annadellisola Sep 30, 2024
dcb5db1
Modelica convention for naming TSet
annadellisola Oct 2, 2024
5a4693c
BoundaryWall.mo change for QTra_losses calculation
annadellisola Oct 11, 2024
1f0d7dc
OuterWall.mo change TRef_a
annadellisola Oct 11, 2024
e7b9981
Window.mo change TRef_a
annadellisola Oct 11, 2024
0d0e788
GUI change in window
annadellisola Oct 11, 2024
96a3b88
SlabOnGround.mo change TRef_a
annadellisola Oct 11, 2024
0f8a8bc
Remove extra parameter TSet
annadellisola Oct 11, 2024
bdfab9c
BoundaryWall.mo definition of 2 parameters (one for fixed boundary T,…
annadellisola Oct 11, 2024
8952d6b
PartialZone.mo change TRefInt
annadellisola Oct 11, 2024
4e5d92b
Description for the convention of Q_in_nom
annadellisola Oct 11, 2024
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17 changes: 12 additions & 5 deletions IDEAS/Buildings/Components/BoundaryWall.mo
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ model BoundaryWall "Opaque wall with optional prescribed heat flow rate or tempe
final custom_q50=0,
final use_custom_q50=true,
final nWin=1,
QTra_design=U_value*A*(273.15 + 21 - TRef_a),
QTra_design=if use_T_in or use_T_fixed then U_value*A*(TRef_a - T_in_nom) else -Q_in_nom,
dT_nominal_a=-1,
add_cracks=false,
layMul(disableInitPortB=use_T_in or use_T_fixed, monLay(monLayDyn(each
Expand All @@ -15,20 +15,25 @@ model BoundaryWall "Opaque wall with optional prescribed heat flow rate or tempe
annotation(Dialog(group="Boundary conditions"));
parameter Modelica.Units.SI.Temperature T_fixed=294.15
"Fixed boundary temperature"
annotation (Dialog(group="Boundary conditions", enable=use_T_fixed));
annotation (Dialog(group="Boundary conditions",enable=use_T_fixed));
parameter Boolean use_T_in = false
"Get the boundary temperature from the input connector"
annotation(Dialog(group="Boundary conditions"));
parameter Modelica.Units.SI.Temperature T_in_nom=T_fixed
"Nominal boundary temperature, for calculation of design heat loss"
annotation (Dialog(group="Design power", tab="Advanced",enable=use_T_fixed or use_T_in));
parameter Boolean use_Q_in = false
"Get the boundary heat flux from the input connector"
annotation(Dialog(group="Boundary conditions"));

parameter Modelica.Units.SI.HeatFlowRate Q_in_nom=0
"Nominal boundary heat flux, for calculation of design heat loss (positive if entering the wall)"
annotation (Dialog(group="Design power", tab="Advanced", enable=use_Q_in));
Modelica.Blocks.Interfaces.RealInput T if use_T_in
"Input for boundary temperature" annotation (Placement(
transformation(extent={{-120,10},{-100,30}}),iconTransformation(extent={{-120,10},
{-100,30}})));
Modelica.Blocks.Interfaces.RealInput Q_flow if use_Q_in
"Input for boundary heat flow rate entering the wall" annotation (Placement(
"Input for boundary heat flow rate entering the wall (positive)" annotation (Placement(
transformation(extent={{-120,-30},{-100,-10}}),
iconTransformation(extent={{-120,
-30},{-100,-10}})));
Expand Down Expand Up @@ -169,7 +174,9 @@ to enable an input for a prescribed boundary condition temperature or heat flow
Alternatively, parameters <code>use_T_fixed</code> and <code>T_fixed</code> can be used
to specify a fixed boundary condition temperature.
It is not allowed to enabled multiple of these three options.
If all are disabled then an adiabatic boundary (<code>Q_flow=0</code>) is used.
If all are disabled then an adiabatic boundary (<code>Q_flow=0</code>) is used.</p>
Parameters <code>T_in_nom</code> and <code>Q_in_nom</code> are used for the calculation
of heat losses, when the temperature boundary condition and heat flow boundary condition are applied, respectively.
</p>
</html>", revisions="<html>
<ul>
Expand Down
5 changes: 4 additions & 1 deletion IDEAS/Buildings/Components/Interfaces/PartialZone.mo
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,11 @@ model PartialZone "Building zone model"
parameter Boolean calculateViewFactor = false
"Explicit calculation of view factors: works well only for rectangular zones!"
annotation(Dialog(tab="Advanced", group="Radiative heat exchange"));
parameter Modelica.Units.SI.Temperature TRefInt=291.15
"Reference temperature of zone on side of propsBusInt, for calculation of design heat load"
annotation (Dialog(group="Design heat load", tab="Advanced"));
final parameter Modelica.Units.SI.Power QInf_design=1012*1.204*V/3600*n50_int
/n50toAch*(273.15 + 21 - sim.Tdes)
/n50toAch*(TRefInt - sim.Tdes)
"Design heat losses from infiltration at reference outdoor temperature";
final parameter Modelica.Units.SI.Power QRH_design=A*fRH
"Additional power required to compensate for the effects of intermittent heating";
Expand Down
2 changes: 1 addition & 1 deletion IDEAS/Buildings/Components/OuterWall.mo
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,7 @@ protected
"Outside air model"
annotation (Placement(transformation(extent={{-100,-60},{-80,-40}})));
initial equation
QTra_design =U_value*A*(273.15 + 21 - Tdes.y);
QTra_design =U_value*A*(TRef_a - Tdes.y);

equation
if hasBuildingShade then
Expand Down
2 changes: 1 addition & 1 deletion IDEAS/Buildings/Components/SlabOnGround.mo
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ model SlabOnGround "opaque floor on ground slab"
custom_q50=0,
final use_custom_q50=true,
final nWin=1,
QTra_design=UEqui*A*(273.15 + 21 - sim.Tdes),
QTra_design=UEqui*A*(TRef_a - sim.Tdes),
add_cracks=false,
dT_nominal_a=-3,
inc=IDEAS.Types.Tilt.Floor,
Expand Down
6 changes: 2 additions & 4 deletions IDEAS/Buildings/Components/Window.mo
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Original file line number Diff line number Diff line change
Expand Up @@ -74,10 +74,8 @@ model Window "Multipane window"
Modelica.Blocks.Interfaces.RealInput Ctrl if controlled
"Control signal between 0 and 1, i.e. 1 is fully closed" annotation (
Placement(visible = true,transformation(

origin={-50,-110},extent={{20,-20},{-20,20}},
rotation=-90), iconTransformation(

origin={-40,-100},extent={{10,-10},{-10,10}},
rotation=-90)));

Expand Down Expand Up @@ -190,7 +188,7 @@ protected
"Outside air model"
annotation (Placement(transformation(extent={{-40,-100},{-20,-80}})));
initial equation
QTra_design = (U_value*A + (if fraType.briTyp.present then fraType.briTyp.G else 0)) *(273.15 + 21 - Tdes.y);
QTra_design = (U_value*A + (if fraType.briTyp.present then fraType.briTyp.G else 0)) *(TRef_a - Tdes.y);

assert(not use_trickle_vent or sim.interZonalAirFlowType <> IDEAS.BoundaryConditions.Types.InterZonalAirFlow.None,
"In " + getInstanceName() + ": Trickle vents can only be enabled when sim.interZonalAirFlowType is not None.");
Expand Down Expand Up @@ -467,4 +465,4 @@ Adjusted implementation for grouping of solar calculations.
</li>
</ul>
</html>"));
end Window;
end Window;
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