@@ -718,6 +718,15 @@ modules <code>nUni</code>. Nevertheless, single-module systems can also be
718718appropriately represented by setting <code>nUni = 1</code>.
719719</p>
720720<p>
721+ All kinds of capacity-modulation processes are supported, such as
722+ VFD-driven compressors, multiple on-off compressors, and single compressor cycling.
723+ The method used to interpolate capacity and power based on user-provided data is
724+ taken from
725+ <a href=\" modelica://Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.TableData2DLoadDep\">
726+ Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.TableData2DLoadDep</a>.
727+ Users should be familiar with this latter block before continuing with this documentation.
728+ </p>
729+ <p>
721730The block implements the following functionalities.
722731</p>
723732<ul>
@@ -734,13 +743,6 @@ Module staging
734743Load balancing between the HW and CHW side
735744</li>
736745</ul>
737- <p>
738- The method used to interpolate capacity and power based on user-provided data is
739- taken from
740- <a href=\" modelica://Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.TableData2DLoadDep\">
741- Buildings.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.BaseClasses.TableData2DLoadDep</a>.
742- Users should be familiar with this latter block before continuing with this documentation.
743- </p>
744746<h4>System and module operating mode</h4>
745747<p>
746748The block input <code>mode</code> allows switching between three system operating modes.
@@ -909,7 +911,7 @@ Based on this assumption, on the dominant side, the heating or cooling load of e
909911module in SHC mode can be calculated as:</p>
910912<code>Q<Hea|Coo>SetUniShc_flow = Q<Hea|Coo>Set_flow / (nUniShc + nUni<Hea|Coo>)</code>.
911913<p>
912- Now, in order to achieve load balancing between the CHW and HW sides for the
914+ In order to achieve load balancing between the CHW and HW sides for the
913915subset of modules in SHC mode, the model assumes that these modules are loaded
914916for the most demanding side, and that <b>a single module</b> can cycle between
915917SHC and the corresponding single-mode operation.
@@ -986,7 +988,7 @@ The load balancing logic relies on a subset of modules producing excess heat flo
986988while another module compensates for it.
987989The fundamental assumption of even load between modules therefore breaks down on
988990the non-dominant side.
989- In a real system where the modules are hydronically balanced, this imbalance yields
991+ In a real system where the modules are hydronically balanced, this load imbalance yields
990992varying leaving temperatures across modules.
991993In the worst case, the deviation from setpoint is <code>SPLR / 2</code> times the
992994design ΔT.
0 commit comments