lbl-srg · JayHuLBL · Jun 20, 2023 · Jun 21, 2023 · Jun 21, 2023 · Jun 21, 2023
diff --git a/Buildings/Fluid/Humidifiers/BaseClasses/PerformanceCurveModifier.mo b/Buildings/Fluid/Humidifiers/BaseClasses/PerformanceCurveModifier.mo
@@ -0,0 +1,95 @@
+within Buildings.Fluid.Humidifiers.BaseClasses;
+block PerformanceCurveModifier
+  "Block for calculating modifier curves"
+
+  parameter Buildings.Fluid.Humidifiers.Data.DXDehumidifier.Generic per
+    "Data record"
+    annotation (Placement(transformation(extent={{20,60},{40,80}})));
+
+  Modelica.Blocks.Interfaces.RealInput T
+    "Temperature"
+    annotation (Placement(transformation(extent={{-140,20},{-100,60}}),
+      iconTransformation(extent={{-140,20},{-100,60}})));
+
+  Modelica.Blocks.Interfaces.RealInput phi
+    "Relative Humidity"
+    annotation (Placement(transformation(extent={{-140,-60},{-100,-20}})));
+
+  Modelica.Blocks.Interfaces.RealOutput watRemMod
+    "Water removal modifier value"
+    annotation (Placement(transformation(extent={{100,30},{120,50}}),
+      iconTransformation(extent={{100,30},{120,50}})));
+
+  Modelica.Blocks.Interfaces.RealOutput eneFacMod
+    "Energy factor modifier value"
+    annotation (Placement(transformation(extent={{100,-50},{120,-30}}),
+      iconTransformation(extent={{100,-50},{120,-30}})));
+
+equation
+    //-------------------------Part-load performance modifiers----------------------------//
+    // Compute the water removal and energy factor modifier fractions, using a biquadratic curve.
+    // Since the regression for capacity can have negative values
+    // (for unreasonable inputs), we constrain its return value to be
+    // non-negative.
+  watRemMod =Buildings.Utilities.Math.Functions.smoothMax(
+      x1=Buildings.Utilities.Math.Functions.biquadratic(
+        a=per.watRem,
+        x1=Modelica.Units.Conversions.to_degC(T),
+        x2=phi*100),
+      x2=0.001,
+      deltaX=0.0001);
+
+  eneFacMod =Buildings.Utilities.Math.Functions.smoothMax(
+        x1=Buildings.Utilities.Math.Functions.biquadratic(
+          a=per.eneFac,
+          x1=Modelica.Units.Conversions.to_degC(T),
+          x2=phi*100),
+        x2=0.001,
+        deltaX=0.0001);
+
+annotation (Icon(coordinateSystem(preserveAspectRatio=false), graphics={
+        Text(
+          extent={{-100,140},{100,100}},
+          textColor={0,0,255},
+          textString="%name"), Rectangle(extent={{-100,100},{100,-100}},
+            lineColor={0,0,127}),
+        Rectangle(
+          extent={{-100,100},{100,-100}},
+          lineColor={0,0,0},
+          fillColor={255,255,255},
+          fillPattern=FillPattern.Solid)}), Diagram(
+        coordinateSystem(preserveAspectRatio=false)),
+Documentation(info="<html>
+<h4>Performance Curve Modifiers</h4>
+<p>
+This block includes the following performance curve modifiers
+</p>
+<p>
+The water removal modifier curve <code>watRemMod</code> is a biquadratic curve
+with two independent variables: dry-bulb temperature and relative humidity of the
+air entering the dehumidifier.
+</p>
+<p align=\"center\"><i>watRemMod(T<sub>in</sub>, phi<sub>in</sub>) = a<sub>1</sub>
++ a<sub>2</sub> T<sub>in</sub> + a<sub>3</sub> T<sub>in</sub><sup>2</sup>
++ a<sub>4</sub> phi<sub>in</sub> + a<sub>5</sub> phi<sub>in</sub><sup>2</sup>
++ a<sub>6</sub> T<sub>in</sub> phi<sub>in</sub></i>
+</p>
+<p>
+The energy factor modifier curve <code>eneFacMod</code> is a biquadratic curve
+with two independent variables: dry-bulb temperature and relative humidity of the
+air entering the dehumidifier.
+</p>
+<p align=\"center\"><i>eneFacMod(T<sub>in</sub>, phi<sub>in</sub>) = b<sub>1</sub>
++ b<sub>2</sub> T<sub>in</sub> + b<sub>3</sub> T<sub>in</sub><sup>2</sup>
++ b<sub>4</sub> phi<sub>in</sub> + b<sub>5</sub> phi<sub>in</sub><sup>2</sup>
++ b<sub>6</sub> T<sub>in</sub> phi<sub>in</sub></i>
+</p>
+</html>", revisions="<html>
+<ul>
+<li>
+Feburary 8, 2024, by Lingzhe Wang, Karthikeya Devaprasad, Xing Lu:<br/>
+First implementation.
+</li>
+</ul>
+</html>"));
+end PerformanceCurveModifier;
diff --git a/Buildings/Fluid/Humidifiers/BaseClasses/package.mo b/Buildings/Fluid/Humidifiers/BaseClasses/package.mo
@@ -0,0 +1,13 @@
+within Buildings.Fluid.Humidifiers;
+package BaseClasses "Package with base classes for Buildings.Fluid.Humidifiers"
+    extends Modelica.Icons.BasesPackage;
+
+annotation (
+  Documentation(info="<html>
+<p>
+This package contains base classes that are used to construct the models in
+<a href=\"modelica://Buildings.Fluid.Humidifiers\">
+Buildings.Fluid.Humidifiers</a>.
+</p>
+</html>"));
+end BaseClasses;
diff --git a/Buildings/Fluid/Humidifiers/BaseClasses/package.order b/Buildings/Fluid/Humidifiers/BaseClasses/package.order
@@ -0,0 +1 @@
+PerformanceCurveModifier