recordSingleSpeedHeating
Data record for DX heating coil in validation models
Extends from Buildings.Fluid.DXSystems.Heating.AirSource.Data.Generic.DXCoil (Performance record for a DX Heating DXCoil with one or multiple stages).
Information
This record declares performance curves for the heating capacity and the EIR for use in
heating coil validation models in
Buildings.Fluid.DXSystems.Heating.AirSource.Validation.
It has been obtained from the EnergyPlus 9.6 example file
PackagedTerminalHeatPump.idf.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | sinStaOpe (from DXCoil) | nSta == 1 | The data record is used for single speed operation |
| Integer | nSta (from DXCoil) | Number of stages | |
| Real | minSpeRat (from DXCoil) | 0.2 | Minimum speed ratio |
| Buildings.Fluid.DXSystems.Heating.AirSource.Data.Generic.BaseClasses.Stage[nSta] | sta (from DXCoil) | Data record for coil performance at each stage | |
| Buildings.Fluid.DXSystems.Heating.BaseClasses.Types.DefrostOperation | defOpe (from DXCoil) | Buildings.Fluid.DXSystems.Heating.BaseClasses.Types.DefrostOperation.resistive | Defrost operation type |
| Buildings.Fluid.DXSystems.Heating.BaseClasses.Types.DefrostTimeMethods | defTri (from DXCoil) | Buildings.Fluid.DXSystems.Heating.BaseClasses.Types.DefrostTimeMethods.timed | Type of method used to calculate defrost time fraction |
| Real | tDefRun (from DXCoil) | 0.166 | Time period fraction for which defrost cycle is run |
| Modelica.Units.SI.ThermodynamicTemperature | TDefLim (from DXCoil) | 273.65 | Maximum temperature at which defrost operation is activated |
| Modelica.Units.SI.HeatFlowRate | QDefResCap (from DXCoil) | Heating capacity of resistive defrost element | |
| Modelica.Units.SI.HeatFlowRate | QCraCap (from DXCoil) | Crankcase heater capacity | |
| Real[6] | defEIRFunT (from DXCoil) | fill(0, 6) | Biquadratic coefficients for defrost capacity as a function of temperature |
| Real[:] | PLFraFunPLR (from DXCoil) | {1} | Quadratic/cubic equation for part load fraction as a function of part-load ratio |
| Minimum conditions | |||
| Modelica.Units.SI.MassFlowRate | m_flow_small (from DXCoil) | 0.0001*sta[nSta].nomVal.m_flow_nominal | Small mass flow rate for regularization near zero flow |
Revisions
-
April 19, 2023 by Xing Lu and Karthik Devaprasad:
First implementation.