Add Output Variables to Ideal Air loads

doc/input-output-reference/src/overview/group-zone-forced-air-units.tex

@@ -296,6 +296,10 @@ \subsubsection{Outputs}\label{outputs-043}
   HVAC,Average,Zone Ideal Loads Supply Air Mass Flow Rate {[}kg/s{]}
 \item
   HVAC,Average,Zone Ideal Loads Supply Air Standard Density Volume Flow Rate {[}m3/s{]}
+\item
+  HVAC,Average,Zone Ideal Loads Supply Air Temperature {[}C{]}
+\item
+  HVAC,Average,Zone Ideal Loads Supply Air Humidity Ratio {[}kgWater/kgDryAir{]}      
 \end{itemize}
 
 \paragraph{Ideal Loads Output Variable Overview}\label{ideal-loads-output-variable-overview}
@@ -486,6 +490,16 @@ \subsubsection{Outputs}\label{outputs-043}
 
 The volume flow rate of the supply air stream in m3/s using the standard density. The standard density is determined for dry air at the standard barometric pressure for the location's elevation and a temperature of 20.0ºC. The standard density does not vary over time.
 
+\paragraph{Zone Ideal Loads Supply Air Temperature {[}C{]}}\label{zone-ideal-loads-supply-air-temperature-c}
+
+The dry bulb temperature of the supply air stream in ºC.
+
+
+\paragraph{Zone Ideal Loads Supply Air Humidity Ratio {[}kgWater/kgDryAir{]}}\label{zone-ideal-loads-supply-air-humidity-ratio-kgWaterkgDryAir}
+
+The humidity ratio of the supply air stream in kgWater/kgDryAir.
+
+
 \subsection{ZoneHVAC:FourPipeFanCoil}\label{zonehvacfourpipefancoil}
 
 What is a fan coil unit? Like many HVAC terms, ``fan coil unit'' is used rather loosely. Sometimes it is used for terminal units that would be better described as powered induction units. Carrier and others use the term for the room side of refrigerant-based split systems. Here we are modeling in-room forced-convection hydronic units. The hydronic heating coil may be replaced with an electric heating coil. Typically these units are small (200 -- 1200 cfm) and self-contained. They are mostly used in exterior zones, usually in hotels, apartments, or offices. They may be connected to ducted outside air, or have a direct outside air vent, but they do not have outside air economizers. Units with outside air economizers are marketed (in the United States) as unit ventilators. Unit ventilators are typically bigger than fan coils and are widely used in classrooms or other applications where ventilation is a priority. If a zonal unit with an outside economizer is desired, \emph{\hyperref[zonehvacunitventilator]{ZoneHVAC:UnitVentilator}} should be used.

src/EnergyPlus/PurchasedAirManager.cc

@@ -1057,6 +1057,21 @@ namespace PurchasedAirManager {
                                 "Average",
                                 PurchAir(PurchAirNum).Name);
 
+            // Air temperature
+            SetupOutputVariable("Zone Ideal Loads Supply Air Temperature",
+                                OutputProcessor::Unit::C,
+                                PurchAir(PurchAirNum).ZoneIdealLoadsSupplyAirTemperature,
+                                "System",
+                                "Average",
+                                PurchAir(PurchAirNum).Name);
+            // Humidity Ratio
+            SetupOutputVariable("Zone Ideal Loads Supply Air Humidity Ratio",
+                                OutputProcessor::Unit::kgWater_kgDryAir,
+                                PurchAir(PurchAirNum).ZoneIdealLoadsSupplyAirHumidityRatio,
+                                "System",
+                                "Average",
+                                PurchAir(PurchAirNum).Name);
+
             if (AnyEnergyManagementSystemInModel) {
                 SetupEMSActuator("Ideal Loads Air System",
                                  PurchAir(PurchAirNum).Name,
@@ -2080,6 +2095,8 @@ namespace PurchasedAirManager {
         PurchAir(PurchAirNum).MinOAMassFlowRate = 0.0;
         PurchAir(PurchAirNum).TimeEconoActive = 0.0;
         PurchAir(PurchAirNum).TimeHtRecActive = 0.0;
+        PurchAir(PurchAirNum).ZoneIdealLoadsSupplyAirTemperature = 0.0;
+        PurchAir(PurchAirNum).ZoneIdealLoadsSupplyAirHumidityRatio = 0.0;
         SysOutputProvided = 0.0;
         MoistOutputProvided = 0.0;
         CoolSensOutput = 0.0;
@@ -2785,6 +2802,8 @@ namespace PurchasedAirManager {
         PurchAir(PurchAirNum).OutdoorAirVolFlowRateStdRho = OAMassFlowRate / StdRhoAir;
         PurchAir(PurchAirNum).SupplyAirMassFlowRate = SupplyMassFlowRate;
         PurchAir(PurchAirNum).SupplyAirVolFlowRateStdRho = SupplyMassFlowRate / StdRhoAir;
+        PurchAir(PurchAirNum).ZoneIdealLoadsSupplyAirTemperature = Node(InNodeNum).Temp;
+        PurchAir(PurchAirNum).ZoneIdealLoadsSupplyAirHumidityRatio = Node(InNodeNum).HumRat;
 
         if (PurchAir(PurchAirNum).PlenumExhaustAirNodeNum > 0) {
             Node(PurchAir(PurchAirNum).PlenumExhaustAirNodeNum).MassFlowRate = SupplyMassFlowRate;

src/EnergyPlus/PurchasedAirManager.hh

@@ -247,6 +247,9 @@ namespace PurchasedAirManager {
         int ZonePtr;               // pointer to a zone served by an Ideal load air system
         int HVACSizingIndex;       // index of a HVAC Sizing object for an Ideal load air system
 
+        Real64 ZoneIdealLoadsSupplyAirTemperature; // ZoneIdealLoadsSupplyAirTemperature [C]
+        Real64 ZoneIdealLoadsSupplyAirHumidityRatio; // ZoneIdealLoadsSupplyAirHumidityRatio [kgWater/kgDryAir]
+
         // Default Constructor
         ZonePurchasedAir()
             : AvailSchedPtr(0), ZoneSupplyAirNodeNum(0), ZoneExhaustAirNodeNum(0), PlenumExhaustAirNodeNum(0), ReturnPlenumIndex(0),
@@ -271,7 +274,7 @@ namespace PurchasedAirManager {
               ZoneLatHeatRate(0.0), ZoneTotHeatRate(0.0), ZoneSenCoolRate(0.0), ZoneLatCoolRate(0.0), ZoneTotCoolRate(0.0), OASenHeatRate(0.0),
               OALatHeatRate(0.0), OATotHeatRate(0.0), OASenCoolRate(0.0), OALatCoolRate(0.0), OATotCoolRate(0.0), HtRecSenHeatRate(0.0),
               HtRecLatHeatRate(0.0), HtRecTotHeatRate(0.0), HtRecSenCoolRate(0.0), HtRecLatCoolRate(0.0), HtRecTotCoolRate(0.0), TimeEconoActive(0.0),
-              TimeHtRecActive(0.0), ZonePtr(0), HVACSizingIndex(0)
+              TimeHtRecActive(0.0), ZoneIdealLoadsSupplyAirTemperature(0.0), ZoneIdealLoadsSupplyAirHumidityRatio (0.0), ZonePtr(0), HVACSizingIndex(0)
         {
         }
     };