/// <summary>
///
/// </summary>
/// <param name="temperature"></param>
/// <param name="pressure"></param>
/// <returns>null if out of range</returns>
public override PVTEntry GetEntryAtTemperatureAndPressure(double temperature, double pressure)
{
SteamEquationRegion equationRegion = FindRegion(temperature, pressure);
IPVTEntryFactory fac = null;
switch (equationRegion)
{
case SteamEquationRegion.Region1:
fac = new Region1Factory(temperature, pressure);
break;
case SteamEquationRegion.Region2:
fac = new Region2Factory(temperature, pressure, CriticalTemperature, CriticalPressure);
break;
case SteamEquationRegion.Region3:
Range tempRange = GetTemperatureRange(pressure);
fac = new Region3Factory(temperature, pressure, tempRange);
break;
case SteamEquationRegion.Region4:
fac = new Region4Factory(temperature, pressure);
break;
case SteamEquationRegion.Region5:
fac = new Region5Factory(temperature, pressure, CriticalTemperature, CriticalPressure);
break;
case SteamEquationRegion.OutOfRange:
default:
fac = null;
break;
}
return(fac?.BuildThermoEntry());
}
/// <summary>
///
/// </summary>
/// <param name="satTemp">Must be between 273.15 and CriticalTemperature (in K)</param>
/// <param name="phase"></param>
/// <returns>null if out of range</returns>
public override PVTEntry GetEntryAtSatTemp(double satTemp, SaturationRegion phase)
{
double?satPressure = GetSatPressure(satTemp);
if (satPressure == null)
{
return(null);
}
IPVTEntryFactory fac = null;
switch (phase)
{
case SaturationRegion.Liquid:
fac = new Region1Factory(satTemp, satPressure.Value);
break;
case SaturationRegion.Vapor:
fac = new Region2Factory(satTemp, satPressure.Value, CriticalTemperature, CriticalPressure);
break;
case SaturationRegion.Solid:
default:
fac = null;
break;
}
return(fac?.BuildThermoEntry());
}