Buildings.Fluid.DXSystems.Heating.AirSource.Validation.Data
Package with performance data used in validation models
Information
This package contains performance data used in the validation models.Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).
Package Content
| Name | Description |
|---|---|
 SingleSpeedHeating
|
Data record for DX heating coil in validation models |
Buildings.Fluid.DXSystems.Heating.AirSource.Validation.Data.SingleSpeedHeating
Data record for DX heating coil in validation models
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.
Extends from Buildings.Fluid.DXSystems.Heating.AirSource.Data.Generic.DXCoil (Performance record for a DX Heating DXCoil with one or multiple stages).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nSta | 1 | Number of stages |
| Real | minSpeRat | 0.2 | Minimum speed ratio |
| Stage | sta[nSta] | {Buildings.Fluid.DXSystems.H... | Data record for coil performance at each stage |
| DefrostOperation | defOpe | Buildings.Fluid.DXSystems.He... | Defrost operation type |
| DefrostTimeMethods | defTri | Buildings.Fluid.DXSystems.He... | Type of method used to calculate defrost time fraction |
| Real | tDefRun | 0.166 | Time period fraction for which defrost cycle is run [1] |
| ThermodynamicTemperature | TDefLim | 273.65 | Maximum temperature at which defrost operation is activated [K] |
| HeatFlowRate | QDefResCap | 10500 | Heating capacity of resistive defrost element [W] |
| HeatFlowRate | QCraCap | 200 | Crankcase heater capacity [W] |
| Real | defEIRFunT[6] | {0.297145,0.0430933,-0.00074... | Biquadratic coefficients for defrost capacity as a function of temperature |
| Real | PLFraFunPLR[:] | {1} | Quadratic/cubic equation for part load fraction as a function of part-load ratio |
| Minimum conditions | |||
| MassFlowRate | m_flow_small | 0.0001*sta[nSta].nomVal.m_fl... | Small mass flow rate for regularization near zero flow [kg/s] |
Modelica definition
record SingleSpeedHeating
"Data record for DX heating coil in validation models"
extends Buildings.Fluid.DXSystems.Heating.AirSource.Data.Generic.DXCoil(
sta={
Buildings.Fluid.DXSystems.Heating.AirSource.Data.Generic.BaseClasses.Stage(
spe=1800/60,
nomVal=
Buildings.Fluid.DXSystems.Heating.AirSource.Data.Generic.BaseClasses.NominalValues(
Q_flow_nominal=15000,
COP_nominal=2.75,
m_flow_nominal=0.782220983308365,
TEvaIn_nominal=273.15 + 6,
TConIn_nominal=273.15 + 21),
perCur=
Buildings.Fluid.DXSystems.Heating.AirSource.Examples.PerformanceCurves.Curve_I())},
final nSta=1,
final QDefResCap=10500,
final QCraCap=200,
final defEIRFunT={0.297145,0.0430933,-0.000748766,0.00597727,0.000482112,-0.000956448},
final PLFraFunPLR={1});
end SingleSpeedHeating;