Closed mitchute closed 3 years ago
Moved from #7026
2021.06.09 (RKS) This seems to be taken care of already.
CentralHeatPumpSystem
. Field: Control Method should be taken out of the \paragraph{}
See source here.The documentation for the Coil:Heating:WaterToAirHeatPump:EquationFit is similarly lacking in the IO Ref, but the Engineering reference discusses neither the Heating Capacity Coefficients nor Heating Power Consumption Coefficients.
I'm pretty sure these objects are from this thesis paper at this link around page 49. Can anyone confirm?
EDIT: I think I found the description of the curves in this file, which can be used for updating the IO Ref. https://github.com/NREL/EnergyPlus/blob/develop/src/EnergyPlus/WaterToAirHeatPumpSimple.cc
Real64 const Tref(283.15); // Reference Temperature for performance curves,10C [K]
CelsiustoKelvin = 273.15
ratioTDB = ((LoadSideInletDBTemp + CelsiustoKelvin) / Tref);
ratioTWB = ((LoadSideInletWBTemp + CelsiustoKelvin) / Tref);
ratioTS = ((SourceSideInletTemp + CelsiustoKelvin) / Tref);
ratioVL = (LoadSideMassFlowRate /(AirVolFlowRateRated * PsyRhoAirFnPbTdbW(StdBaroPress, LoadSideInletDBTemp, LoadSideInletHumRat, RoutineName)));
ratioVS = (SourceSideMassFlowRate) / (SimpleWatertoAirHP(HPNum).DesignWaterMassFlowRate);
Coil:Cooling:WaterToAirHeatPump:EquationFit
TotalCapCoeff1 + (ratioTWB * TotalCapCoeff2) + (ratioTS * TotalCapCoeff3) + (ratioVL * TotalCapCoeff4) + (ratioVS * TotalCapCoeff5)
SensCapCoeff1 + (ratioTDB * SensCapCoeff2) + (ratioTWB * SensCapCoeff3) + (ratioTS * SensCapCoeff4) + (ratioVL * SensCapCoeff5) + (ratioVS * SensCapCoeff6)
CoolPowerCoeff1 + (ratioTWB * CoolPowerCoeff2) + (ratioTS * CoolPowerCoeff3) + (ratioVL * CoolPowerCoeff4) + (ratioVS * CoolPowerCoeff5)
Coil:Heating:WaterToAirHeatPump:EquationFit
HeatCapCoeff1 + (ratioTDB * HeatCapCoeff2) + (ratioTS * HeatCapCoeff3) + (ratioVL * HeatCapCoeff4) + (ratioVS * HeatCapCoeff5)
HeatPowerCoeff1 + (ratioTDB * HeatPowerCoeff2) + (ratioTS * HeatPowerCoeff3) + (ratioVL * HeatPowerCoeff4) + (ratioVS * HeatPowerCoeff5)
- [x] The documentation for the Coil:Cooling:WaterToAirHeatPump:EquationFit in the 9.2 IO Ref is lacking for the performance coefficient fields. Looks like the Engineering Reference has an explanation of the Total Cooling Capacity Coefficients and Sensible Cooling Capacity Coefficients, but not the Cooling Power Consumption Coefficients.
The documentation for the Coil:Heating:WaterToAirHeatPump:EquationFit is similarly lacking in the IO Ref, but the Engineering reference discusses neither the Heating Capacity Coefficients nor Heating Power Consumption Coefficients.
I'm pretty sure these objects are from this thesis paper at this link around page 49. Can anyone confirm?
EDIT: I think I found the description of the curves in this file, which can be used for updating the IO Ref. https://github.com/NREL/EnergyPlus/blob/develop/src/EnergyPlus/WaterToAirHeatPumpSimple.cc
Real64 const Tref(283.15); // Reference Temperature for performance curves,10C [K] CelsiustoKelvin = 273.15 ratioTDB = ((LoadSideInletDBTemp + CelsiustoKelvin) / Tref); ratioTWB = ((LoadSideInletWBTemp + CelsiustoKelvin) / Tref); ratioTS = ((SourceSideInletTemp + CelsiustoKelvin) / Tref); ratioVL = (LoadSideMassFlowRate /(AirVolFlowRateRated * PsyRhoAirFnPbTdbW(StdBaroPress, LoadSideInletDBTemp, LoadSideInletHumRat, RoutineName))); ratioVS = (SourceSideMassFlowRate) / (SimpleWatertoAirHP(HPNum).DesignWaterMassFlowRate); Coil:Cooling:WaterToAirHeatPump:EquationFit TotalCapCoeff1 + (ratioTWB * TotalCapCoeff2) + (ratioTS * TotalCapCoeff3) + (ratioVL * TotalCapCoeff4) + (ratioVS * TotalCapCoeff5) SensCapCoeff1 + (ratioTDB * SensCapCoeff2) + (ratioTWB * SensCapCoeff3) + (ratioTS * SensCapCoeff4) + (ratioVL * SensCapCoeff5) + (ratioVS * SensCapCoeff6) CoolPowerCoeff1 + (ratioTWB * CoolPowerCoeff2) + (ratioTS * CoolPowerCoeff3) + (ratioVL * CoolPowerCoeff4) + (ratioVS * CoolPowerCoeff5) Coil:Heating:WaterToAirHeatPump:EquationFit HeatCapCoeff1 + (ratioTDB * HeatCapCoeff2) + (ratioTS * HeatCapCoeff3) + (ratioVL * HeatCapCoeff4) + (ratioVS * HeatCapCoeff5) HeatPowerCoeff1 + (ratioTDB * HeatPowerCoeff2) + (ratioTS * HeatPowerCoeff3) + (ratioVL * HeatPowerCoeff4) + (ratioVS * HeatPowerCoeff5)
It's not very obvious, but the water-to-air heat pump cooling and heating coil equations and coefficients are explained in the engineering reference here. Updating the IO Reference with these references. Thanks @mjwitte
Issue overview
A collection of small documentation issues. See checkboxed comments below.