Merge pull request #4752 from NREL/VSHPWH

New Variable Speed Heat Pump Water Heater Model

src/EnergyPlus/DataHVACGlobals.cc

@@ -164,6 +164,7 @@ namespace DataHVACGlobals {
 	int const Coil_HeatingWaterToAirHPVSEquationFit( 27 );
 	int const Coil_CoolingAirToAirVariableSpeed( 28 );
 	int const Coil_HeatingAirToAirVariableSpeed( 29 );
+	int const CoilDX_HeatPumpWaterHeaterVariableSpeed(30);
 
 	// Water to air HP coil types
 	int const WatertoAir_Simple( 1 );

src/EnergyPlus/DataHVACGlobals.hh

@@ -154,6 +154,7 @@ namespace DataHVACGlobals {
 	extern int const Coil_HeatingWaterToAirHPVSEquationFit;
 	extern int const Coil_CoolingAirToAirVariableSpeed;
 	extern int const Coil_HeatingAirToAirVariableSpeed;
+	extern int const CoilDX_HeatPumpWaterHeaterVariableSpeed;
 
 	// Water to air HP coil types
 	extern int const WatertoAir_Simple;

src/EnergyPlus/VariableSpeedCoils.hh

@@ -91,6 +91,10 @@ namespace VariableSpeedCoils {
 	extern Real64 Winput; // Power Consumption [W]
 	extern Real64 PLRCorrLoadSideMdot; // Load Side Mdot corrected for Part Load Ratio of the unit
 
+	extern Real64 VSHPWHHeatingCapacity; // Used by Heat Pump:Water Heater object as total water heating capacity [W]
+	extern Real64 VSHPWHHeatingCOP; // Used by Heat Pump:Water Heater object as water heating COP [W/W]
+
+
 	// SUBROUTINE SPECIFICATIONS FOR MODULE
 
 	// Driver/Manager Routines
@@ -219,6 +223,9 @@ namespace VariableSpeedCoils {
 		FArray1D_int MSWasteHeat;
 		// index of waste heat as a function of temperature
 		FArray1D< Real64 > MSWasteHeatFrac;
+		// water heating coil pump power at various speeds
+		FArray1D< Real64 > MSWHPumpPower;
+		FArray1D< Real64 > MSWHPumpPowerPerRatedTotCap;
 		// Waste heat fraction
 		Real64 SpeedNumReport;
 		//speed number for output
@@ -287,6 +294,26 @@ namespace VariableSpeedCoils {
 		Real64 InletSourceAirEnthalpy; // source air enthalpy entering the outdoor coil [J/kg]
 		//end variables for water system interactions
 
+		//begin varibles for HPWH
+		Real64 RatedCapWH; // Rated water heating Capacity [W]
+		int InletAirTemperatureType; // Specifies to use either air wet-bulb or dry-bulb temp for curve objects
+		Real64 WHRatedInletDBTemp; // Rated inlet air dry-bulb temperature [C]
+		Real64 WHRatedInletWBTemp; // Rated inlet air wet-bulb temperature [C]
+		Real64 WHRatedInletWaterTemp; // Rated condenser water inlet temperature [C]
+		Real64 HPWHCondPumpElecNomPower; // Nominal power input to the condenser water circulation pump [W]
+		Real64 HPWHCondPumpFracToWater; // Nominal power fraction to water for the condenser water circulation pump
+		Real64 RatedHPWHCondWaterFlow; // Rated water flow rate through the condenser of the HPWH DX coil [m3/s]
+		Real64 ElecWaterHeatingPower; // Total electric power consumed by compressor and condenser pump [W]
+		Real64 ElecWaterHeatingConsumption; // Total electric consumption by compressor and condenser pump [J]
+		bool FanPowerIncludedInCOP; // Indicates that fan heat is included in heating capacity and COP
+		bool CondPumpHeatInCapacity; // Indicates that condenser pump heat is included in heating capacity
+		bool CondPumpPowerInCOP; // Indicates that condenser pump power is included in heating COP
+		bool AirVolFlowAutoSized; // Used to report autosizing info for the HPWH DX coil
+		bool WaterVolFlowAutoSized; // Used to report autosizing info for the HPWH DX coil
+		Real64 TotalHeatingEnergy; //total water heating energy
+		Real64 TotalHeatingEnergyRate;//total WH energy rate
+		//end variables for HPWH
+
 		// Default Constructor
 		VariableSpeedCoilData() :
 			NumOfSpeeds( 2 ),
@@ -375,6 +402,8 @@ namespace VariableSpeedCoils {
 			MSEIRWaterFFlow( MaxSpedLevels, 0 ),
 			MSWasteHeat( MaxSpedLevels, 0 ),
 			MSWasteHeatFrac( MaxSpedLevels, 0.0 ),
+			MSWHPumpPower( MaxSpedLevels, 0.0 ),
+			MSWHPumpPowerPerRatedTotCap(MaxSpedLevels, 0.0),
 			SpeedNumReport( 0.0 ),
 			SpeedRatioReport( 0.0 ),
 			DefrostStrategy( 0 ),
@@ -423,7 +452,26 @@ namespace VariableSpeedCoils {
 			CondInletTemp( 0.0 ),
 			SourceAirMassFlowRate( 0.0 ),
 			InletSourceAirTemp( 0.0 ),
-			InletSourceAirEnthalpy( 0.0 )
+			InletSourceAirEnthalpy( 0.0 ),
+			//begin varibles for HPWH
+			RatedCapWH( 0.0 ), // Rated water heating Capacity [W]
+			InletAirTemperatureType( 0 ), // Specifies to use either air wet-bulb or dry-bulb temp for curve objects
+			WHRatedInletDBTemp( 0.0 ), // Rated inlet air dry-bulb temperature [C]
+			WHRatedInletWBTemp( 0.0 ),  // Rated inlet air wet-bulb temperature [C]
+			WHRatedInletWaterTemp( 0.0 ),  // Rated condenser water inlet temperature [C]
+			HPWHCondPumpElecNomPower( 0.0 ),  // Nominal power input to the condenser water circulation pump [W]
+			HPWHCondPumpFracToWater( 1.0 ),  // Nominal power fraction to water for the condenser water circulation pump
+			RatedHPWHCondWaterFlow( 0.0 ), // Rated water flow rate through the condenser of the HPWH DX coil [m3/s]
+			ElecWaterHeatingPower( 0.0 ),  // Total electric power consumed by compressor and condenser pump [W]
+			ElecWaterHeatingConsumption( 0.0 ),  // Total electric consumption by compressor and condenser pump [J]
+			FanPowerIncludedInCOP( false ), // Indicates that fan heat is included in heating capacity and COP
+			CondPumpHeatInCapacity( false ), // Indicates that condenser pump heat is included in heating capacity
+			CondPumpPowerInCOP( false ), // Indicates that condenser pump power is included in heating COP
+			AirVolFlowAutoSized( false ), // Used to report autosizing info for the HPWH DX coil
+			WaterVolFlowAutoSized( false ), // Used to report autosizing info for the HPWH DX coil
+			TotalHeatingEnergy( 0.0 ),  //total water heating energy
+			TotalHeatingEnergyRate( 0.0 ) //total WH energy rate
+			//end variables for HPWH
 		{}
 
 		// Member Constructor
@@ -517,6 +565,8 @@ namespace VariableSpeedCoils {
 			FArray1_int const & MSEIRWaterFFlow,
 			FArray1_int const & MSWasteHeat,
 			FArray1< Real64 > const & MSWasteHeatFrac,
+			FArray1< Real64 > const & MSWHPumpPower,
+			FArray1< Real64 > const & MSWHPumpPowerPerRatedTotCap,
 			Real64 const SpeedNumReport,
 			Real64 const SpeedRatioReport,
 			int const DefrostStrategy, // defrost strategy; 1=reverse-cycle, 2=resistive
@@ -567,7 +617,26 @@ namespace VariableSpeedCoils {
 			Real64 const CondInletTemp, // Evap condenser inlet temperature [C], report variable
 			Real64 const SourceAirMassFlowRate, // source air mass flow rate [kg/s]
 			Real64 const InletSourceAirTemp, // source air temperature entering the outdoor coil [C]
-			Real64 const InletSourceAirEnthalpy // source air enthalpy entering the outdoor coil [J/kg]
+			Real64 const InletSourceAirEnthalpy, // source air enthalpy entering the outdoor coil [J/kg]
+			//begin varibles for HPWH
+			Real64 const RatedCapWH, // Rated water heating Capacity [W]
+			int const InletAirTemperatureType, // Specifies to use either air wet-bulb or dry-bulb temp for curve objects
+			Real64 const WHRatedInletDBTemp, // Rated inlet air dry-bulb temperature [C]
+			Real64 const WHRatedInletWBTemp, // Rated inlet air wet-bulb temperature [C]
+			Real64 const WHRatedInletWaterTemp, // Rated condenser water inlet temperature [C]
+			Real64 const HPWHCondPumpElecNomPower, // Nominal power input to the condenser water circulation pump [W]
+			Real64 const HPWHCondPumpFracToWater, // Nominal power fraction to water for the condenser water circulation pump
+			Real64 const RatedHPWHCondWaterFlow, // Rated water flow rate through the condenser of the HPWH DX coil [m3/s]
+			Real64 const ElecWaterHeatingPower, // Total electric power consumed by compressor and condenser pump [W]
+			Real64 const ElecWaterHeatingConsumption, // Total electric consumption by compressor and condenser pump [J]
+			bool const FanPowerIncludedInCOP, // Indicates that fan heat is included in heating capacity and COP
+			bool const CondPumpHeatInCapacity, // Indicates that condenser pump heat is included in heating capacity
+			bool const CondPumpPowerInCOP, // Indicates that condenser pump power is included in heating COP
+			bool const AirVolFlowAutoSized, // Used to report autosizing info for the HPWH DX coil
+			bool const WaterVolFlowAutoSized, // Used to report autosizing info for the HPWH DX coil
+			Real64 const TotalHeatingEnergy, //total water heating energy
+			Real64 const TotalHeatingEnergyRate//total WH energy rate
+			//end variables for HPWH
 		) :
 			Name( Name ),
 			VarSpeedCoilType( VarSpeedCoilType ),
@@ -658,6 +727,8 @@ namespace VariableSpeedCoils {
 			MSEIRWaterFFlow( MaxSpedLevels, MSEIRWaterFFlow ),
 			MSWasteHeat( MaxSpedLevels, MSWasteHeat ),
 			MSWasteHeatFrac( MaxSpedLevels, MSWasteHeatFrac ),
+			MSWHPumpPower(MaxSpedLevels, MSWHPumpPower),
+			MSWHPumpPowerPerRatedTotCap(MaxSpedLevels, MSWHPumpPowerPerRatedTotCap),
 			SpeedNumReport( SpeedNumReport ),
 			SpeedRatioReport( SpeedRatioReport ),
 			DefrostStrategy( DefrostStrategy ),
@@ -708,7 +779,26 @@ namespace VariableSpeedCoils {
 			CondInletTemp( CondInletTemp ),
 			SourceAirMassFlowRate( SourceAirMassFlowRate ),
 			InletSourceAirTemp( InletSourceAirTemp ),
-			InletSourceAirEnthalpy( InletSourceAirEnthalpy )
+			InletSourceAirEnthalpy( InletSourceAirEnthalpy ),
+			//begin varibles for HPWH
+			RatedCapWH( RatedCapWH ), // Rated water heating Capacity [W]
+			InletAirTemperatureType( InletAirTemperatureType ), // Specifies to use either air wet-bulb or dry-bulb temp for curve objects
+			WHRatedInletDBTemp( WHRatedInletDBTemp ), // Rated inlet air dry-bulb temperature [C]
+			WHRatedInletWBTemp( WHRatedInletWBTemp ),  // Rated inlet air wet-bulb temperature [C]
+			WHRatedInletWaterTemp( WHRatedInletWaterTemp ),  // Rated condenser water inlet temperature [C]
+			HPWHCondPumpElecNomPower( HPWHCondPumpElecNomPower ),  // Nominal power input to the condenser water circulation pump [W]
+			HPWHCondPumpFracToWater( HPWHCondPumpFracToWater ),  // Nominal power fraction to water for the condenser water circulation pump
+			RatedHPWHCondWaterFlow( RatedHPWHCondWaterFlow ), // Rated water flow rate through the condenser of the HPWH DX coil [m3/s]
+			ElecWaterHeatingPower( ElecWaterHeatingPower ),  // Total electric power consumed by compressor and condenser pump [W]
+			ElecWaterHeatingConsumption( ElecWaterHeatingConsumption ),  // Total electric consumption by compressor and condenser pump [J]
+			FanPowerIncludedInCOP( FanPowerIncludedInCOP ), // Indicates that fan heat is included in heating capacity and COP
+			CondPumpHeatInCapacity( CondPumpHeatInCapacity ), // Indicates that condenser pump heat is included in heating capacity
+			CondPumpPowerInCOP( CondPumpPowerInCOP ), // Indicates that condenser pump power is included in heating COP
+			AirVolFlowAutoSized( AirVolFlowAutoSized ), // Used to report autosizing info for the HPWH DX coil
+			WaterVolFlowAutoSized( WaterVolFlowAutoSized ), // Used to report autosizing info for the HPWH DX coil
+			TotalHeatingEnergy( TotalHeatingEnergy ),  //total water heating energy
+			TotalHeatingEnergyRate( TotalHeatingEnergyRate ) //total WH energy rate
+			//end variables for HPWH
 		{}
 
 	};
@@ -826,6 +916,13 @@ namespace VariableSpeedCoils {
 		bool & ErrorsFound // set to true if problem
 	);
 
+	int
+	GetVSCoilPLFFPLR(
+		std::string const & CoilType, // must match coil types in this module
+		std::string const & CoilName, // must match coil names for the coil type
+		bool & ErrorsFound // set to true if problem
+	);
+
 	Real64
 	GetVSCoilMinOATCompressor(
 		std::string const & CoilName, // must match coil names for the coil type
@@ -907,6 +1004,16 @@ namespace VariableSpeedCoils {
 		Real64 const SHR // sensible heat ratio at the given capacity and flow rate
 	);
 
+	void
+		CalcVarSpeedHPWH(
+		int const DXCoilNum, // the number of the DX coil to be simulated
+		Real64 & RuntimeFrac, // Runtime Fraction of compressor or percent on time (on-time/cycle time)
+		Real64 const PartLoadRatio, // sensible water heating load / full load sensible water heating capacity
+		Real64 const SpeedRatio, // SpeedRatio varies between 1.0 (higher speed) and 0.0 (lower speed)
+		int const SpeedNum, // Speed number, high bound capacity
+		int const CyclingScheme // Continuous fan OR cycling compressor
+		);
+
 	//     NOTICE
 
 	//     Copyright © 1996-2014 The Board of Trustees of the University of Illinois