Set default value for OpaqueSkyCover when missing

src/EnergyPlus/HeatBalanceKivaManager.cc

@@ -614,6 +614,20 @@ namespace EnergyPlus::HeatBalanceKivaManager {
                                                      Albedo,
                                                      LiquidPrecip);
 
+            // Checks for missing value
+            if (DryBulb >= 99.9) {
+                DryBulb = state.dataWeatherManager->Missing.DryBulb;
+            }
+            if (DewPoint >= 99.9) {
+                DewPoint = state.dataWeatherManager->Missing.DewPoint;
+            }
+            if (WindSpeed >= 999.0) {
+                WindSpeed = state.dataWeatherManager->Missing.WindSpd;
+            }
+            if (OpaqueSkyCover >= 99.0) {
+                OpaqueSkyCover = state.dataWeatherManager->Missing.OpaqSkyCvr;
+            }
+
             kivaWeather.dryBulb.push_back(DryBulb);
             kivaWeather.windSpeed.push_back(WindSpeed);
 

tst/EnergyPlus/unit/HeatBalanceKivaManager.unit.cc

@@ -52,6 +52,7 @@
 
 // EnergyPlus Headers
 #include "Fixtures/EnergyPlusFixture.hh"
+#include <EnergyPlus/ConfiguredFunctions.hh>
 #include <EnergyPlus/Data/EnergyPlusData.hh>
 #include <EnergyPlus/DataEnvironment.hh>
 #include <EnergyPlus/DataGlobals.hh>
@@ -64,6 +65,7 @@
 #include <EnergyPlus/HeatBalanceManager.hh>
 #include <EnergyPlus/IOFiles.hh>
 #include <EnergyPlus/ScheduleManager.hh>
+#include <EnergyPlus/WeatherManager.hh>
 #include <EnergyPlus/ZoneTempPredictorCorrector.hh>
 
 namespace EnergyPlus {
@@ -257,4 +259,22 @@ TEST_F(EnergyPlusFixture, HeatBalanceKiva_SetInitialBCs)
     EXPECT_NEAR(expectedResult4, zoneAssumedTemperature4 + DataGlobalConstants::KelvinConv, 0.001);
 }
 
+TEST_F(EnergyPlusFixture, OpaqueSkyCover_InterpretWeatherMissingOpaqueSkyCover) {
+
+    // DERIVED TYPE DEFINITIONS:
+    // SUBROUTINE LOCAL VARIABLE DECLARATIONS:
+
+    state->files.inputWeatherFileName.fileName = configured_source_directory() + "/tst/EnergyPlus/unit/Resources/HeatBalanceKivaManagerOSkyTest.epw";
+    state->dataWeatherManager->Missing.OpaqSkyCvr = 5;
+
+    HeatBalanceKivaManager::KivaManager km;
+    km.readWeatherData(*state);
+
+    Real64 TDewK = 264.25;
+    Real64 expected_OSky = 5;
+    Real64 expected_ESky = (0.787 + 0.764 * std::log(TDewK / DataGlobalConstants::KelvinConv)) * (1.0 + 0.0224 * expected_OSky - 0.0035 * pow_2(expected_OSky) + 0.00028 * pow_3(expected_OSky));;
+
+    EXPECT_NEAR(expected_ESky, km.kivaWeather.skyEmissivity[0], 0.01);
+}
+
 } // namespace EnergyPlus