Increase loop low flow tolerance.

NREL · Apr 4, 2024 · 4a18f3e · 4a18f3e · nrel-bot · Apr 5, 2024
1 parent ed759b1
commit 4a18f3e
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 3 deletions.
diff --git a/src/EnergyPlus/DataConvergParams.hh b/src/EnergyPlus/DataConvergParams.hh
@@ -92,8 +92,7 @@ namespace DataConvergParams {
     constexpr Real64 PlantEnergyToler(10.0); // Tolerance for Energy comparisons (in Watts W)
 
     // Energy Tolerance Calculation, used to scale the answer for a more intuitive answer for comparison
-    constexpr Real64 PlantFlowFlowRateToler(0.01);    // Tolerance for mass flow rate convergence (in kg/s)
-    constexpr Real64 PlantLowFlowRateToler(0.000001); // Tolerance for low flow rate used for determining when plant pumps can be shut down
+    constexpr Real64 PlantFlowFlowRateToler(0.01); // Tolerance for mass flow rate convergence (in kg/s)
 
     constexpr int ConvergLogStackDepth(10);
 

diff --git a/src/EnergyPlus/Plant/LoopSide.cc b/src/EnergyPlus/Plant/LoopSide.cc
@@ -1177,7 +1177,7 @@ namespace DataPlant {
 
         // overrides the loop solver flow request to allow loop pump to turn off when not in use
         if (this_loop_side.TotalPumps == 1) {
-            if (LoopFlow < DataConvergParams::PlantLowFlowRateToler) { // Update from dataconvergetols...
+            if (LoopFlow < DataHVACGlobals::VerySmallMassFlow) { // Update from dataconvergetols...
                 for (int BranchCounter = 1; BranchCounter <= this_loop_side.TotalBranches; ++BranchCounter) {
                     // reference
                     auto &branch(this_loop_side.Branch(BranchCounter));