/// <summary>
/// Calculate all properties for the mixture [SI Units]
/// </summary>
/// <param name="p1">First PsychrometricPoint [SI Units] for mixture.</param>
/// <param name="p2">Second PsychrometricPoint [SI Units] for mixture.</param>
private void CalcMixture(PsychrometricPointSI p1, PsychrometricPointSI p2)
{
// Check for invalid values
if (p1.VolumetricFlowRateLitersPerSecond <= 0 || p2.VolumetricFlowRateLitersPerSecond <= 0)
{
throw new VolumeCannotBeZero();
}
else if (p1.MassicFlowKilogramsPerSecond <= 0 || p2.MassicFlowKilogramsPerSecond <= 0)
{
throw new MassCannotBeZero();
}
// Add flow rates to get total flow rate
double totalFlowRate = p1.VolumetricFlowRateLitersPerSecond + p2.VolumetricFlowRateLitersPerSecond;
this._flowRate = totalFlowRate;
// Assign altitude from point 1.
this._alt = p1.AltitudeInMeters;
// Calculate Dry-Bulb Temperature of the mix
double Db = GenericMassRatio(p1.DryBulbTemperature, p1.MassicFlowKilogramsPerSecond,
p2.DryBulbTemperature, p2.MassicFlowKilogramsPerSecond);
// Calculate Wet-Bulb Temperature of the mix
double Wb = GenericMassRatio(p1.WetBulbTemperature, p1.MassicFlowKilogramsPerSecond,
p2.WetBulbTemperature, p2.MassicFlowKilogramsPerSecond);
// Calculate the mix's properties
this.CalcAllUsingDbWb(Db, Wb);
}
private void tabPanel3_btnCalc_Click(object sender, EventArgs e)
{
// Collect input data
double altitude = double.Parse(tabPanel3_txtAltitude.Text);
double Db = double.Parse(tabPanel3_txtDb.Text);
double Td = double.Parse(tabPanel3_txtTd.Text);
// Decide if IP or SI
if (checkBox1.Checked == false)
{
// IP units
PsychrometricPointIP p1 = new PsychrometricPointIP(altitude);
p1.CalcAllUsingDbTd(Db, Td);
tabPanel3_txtWb.Text = p1.WetBulbTemperatureInDegF.ToString();
tabPanel3_txtRH.Text = p1.RelativeHumidityPercentage.ToString();
tabPanel3_txtW.Text = p1.HumidityRatioInPoundsPerPound.ToString();
tabPanel3_txtWgrains.Text = p1.HumidityRatioGrainsPerPound.ToString();
tabPanel3_txtV.Text = p1.SpecificVolumeInCubicFeetPerPound.ToString();
tabPanel3_txtH.Text = p1.EnthalpyInBtuPerPound.ToString();
tabPanel3_txtP.Text = p1.AtmosphericPressurePsia.ToString();
}
else if (checkBox1.Checked == true)
{
// SI units
PsychrometricPointSI p2 = new PsychrometricPointSI(altitude);
p2.CalcAllUsingDbTd(Db, Td);
tabPanel3_txtWb.Text = p2.WetBulbTemperature.ToString();
tabPanel3_txtRH.Text = p2.RelativeHumidityPercentage.ToString();
tabPanel3_txtW.Text = p2.HumidityRatio.ToString();
tabPanel3_txtWgrains.Text = p2.HumidityRatioGramsPerKilogram.ToString();
tabPanel3_txtV.Text = p2.SpecificVolume.ToString();
tabPanel3_txtH.Text = p2.Enthalpy.ToString();
tabPanel3_txtP.Text = p2.AtmosphericPressureKPa.ToString();
}
}
/// <summary>
/// Create an air mixture using two PsychrometricPoints [SI Units] and calculate
/// the results.
/// </summary>
/// <param name="p1">First PsychrometricPoint [SI Units] for mixture.</param>
/// <param name="p2">Second PsychrometricPoint [SI Units] for mixture.</param>
public PsychrometricAirMixtureSI(PsychrometricPointSI p1, PsychrometricPointSI p2)
{
CalcMixture(p1, p2);
}
private void button1_Click(object sender, EventArgs e)
{
// Collect Input Data
double point1_Db = double.Parse(point1_txtDb.Text);
double point1_Wb = double.Parse(point1_txtWb.Text);
double point1_Flow = double.Parse(point1_txtFlowRate.Text);
double altitude = double.Parse(point1_txtAltitude.Text);
double point2_Db = double.Parse(point2_txtDb.Text);
double point2_Wb = double.Parse(point2_txtWb.Text);
double point2_Flow = double.Parse(point2_txtFlowRate.Text);
// Decide if IP or SI
if (checkBox1.Checked == false)
{
// IP Units
// Create two psychrometric points
PsychrometricPointIP p1 = new PsychrometricPointIP(altitude, point1_Flow);
p1.CalcAllUsingDbWb(point1_Db, point1_Wb);
PsychrometricPointIP p2 = new PsychrometricPointIP(altitude, point2_Flow);
p2.CalcAllUsingDbWb(point2_Db, point2_Wb);
// Create the psychrometric mix point
PsychrometricAirMixtureIP mix = new PsychrometricAirMixtureIP(p1, p2);
// Fill text boxes
mix_txtDb.Text = mix.DryBulbTemperatureInDegF.ToString();
mix_txtWb.Text = mix.WetBulbTemperatureInDegF.ToString();
mix_txtRH.Text = mix.RelativeHumidityPercentage.ToString();
mix_txtTd.Text = mix.DewPointTemperatureInDegF.ToString();
mix_txtW.Text = mix.HumidityRatioInPoundsPerPound.ToString();
mix_txtWgrains.Text = mix.HumidityRatioGrainsPerPound.ToString();
mix_txtV.Text = mix.SpecificVolumeInCubicFeetPerPound.ToString();
mix_txtH.Text = mix.EnthalpyInBtuPerPound.ToString();
mix_txtP.Text = mix.AtmosphericPressurePsia.ToString();
}
else if (checkBox1.Checked == true)
{
// SI Units
// Create two psychrometric points
PsychrometricPointSI p1 = new PsychrometricPointSI(altitude, point1_Flow);
p1.CalcAllUsingDbWb(point1_Db, point1_Wb);
PsychrometricPointSI p2 = new PsychrometricPointSI(altitude, point2_Flow);
p2.CalcAllUsingDbWb(point2_Db, point2_Wb);
// Create psychrometric mix point
PsychrometricAirMixtureSI mix = new PsychrometricAirMixtureSI(p1, p2);
// Fill text boxes
mix_txtDb.Text = mix.DryBulbTemperature.ToString();
mix_txtWb.Text = mix.WetBulbTemperature.ToString();
mix_txtRH.Text = mix.RelativeHumidityPercentage.ToString();
mix_txtTd.Text = mix.DewPointTemperature.ToString();
mix_txtW.Text = mix.HumidityRatio.ToString();
mix_txtWgrains.Text = mix.HumidityRatioGramsPerKilogram.ToString();
mix_txtV.Text = mix.SpecificVolume.ToString();
mix_txtH.Text = mix.Enthalpy.ToString();
mix_txtP.Text = mix.AtmosphericPressureKPa.ToString();
}
}
