public void Powerequation()
{
//Q = m * Cp * dT
//obs - UnitsNet cant do this eq..
EngineeringUnits.SpecificEntropy P1 = new EngineeringUnits.SpecificEntropy(1, EngineeringUnits.SpecificEntropyUnit.JoulePerKilogramKelvin);
EngineeringUnits.MassFlow M1 = new EngineeringUnits.MassFlow(1, EngineeringUnits.MassFlowUnit.KilogramPerSecond);
EngineeringUnits.Temperature T2 = new EngineeringUnits.Temperature(10, EngineeringUnits.TemperatureUnit.DegreeCelsius);
EngineeringUnits.Temperature T1 = new EngineeringUnits.Temperature(5, EngineeringUnits.TemperatureUnit.DegreeCelsius);
EngineeringUnits.Power Q1 = M1 * P1 * (T2 - T1);
UnitsNet.SpecificEntropy p1 = new UnitsNet.SpecificEntropy(1, UnitsNet.Units.SpecificEntropyUnit.JoulePerKilogramKelvin);
UnitsNet.MassFlow m1 = new UnitsNet.MassFlow(1, UnitsNet.Units.MassFlowUnit.KilogramPerSecond);
UnitsNet.Temperature t2 = new UnitsNet.Temperature(10, UnitsNet.Units.TemperatureUnit.DegreeCelsius);
UnitsNet.Temperature t1 = new UnitsNet.Temperature(5, UnitsNet.Units.TemperatureUnit.DegreeCelsius);
UnitsNet.Power q1 = UnitsNet.Power.FromWatts(p1.JoulesPerKilogramKelvin * m1.KilogramsPerSecond * (t2.Kelvins - t1.Kelvins));
Assert.AreEqual(0, Q1.As(EngineeringUnits.PowerUnit.BritishThermalUnitPerHour) - q1.As(UnitsNet.Units.PowerUnit.BritishThermalUnitPerHour), 7.2E-05);
Assert.AreEqual(0, Q1.As(EngineeringUnits.PowerUnit.Kilowatt) - q1.As(UnitsNet.Units.PowerUnit.Kilowatt), 0);
Assert.AreEqual(0, Q1.As(EngineeringUnits.PowerUnit.Watt) - q1.As(UnitsNet.Units.PowerUnit.Watt), 0);
}
public void Powerequation2()
{
//Q = m * Cp * dT
//obs - UnitsNet cant do this eq..
EngineeringUnits.SpecificEntropy P1 = new EngineeringUnits.SpecificEntropy(35345, EngineeringUnits.SpecificEntropyUnit.BtuPerPoundRankine);
EngineeringUnits.MassFlow M1 = new EngineeringUnits.MassFlow(4356, EngineeringUnits.MassFlowUnit.PoundPerMinute);
EngineeringUnits.Temperature T2 = new EngineeringUnits.Temperature(342, EngineeringUnits.TemperatureUnit.DegreeRankine);
EngineeringUnits.Temperature T1 = new EngineeringUnits.Temperature(43, EngineeringUnits.TemperatureUnit.DegreeRankine);
EngineeringUnits.Power Q1 = M1 * P1 * (T2 - T1);
UnitsNet.SpecificEntropy p1 = new UnitsNet.SpecificEntropy(35345, UnitsNet.Units.SpecificEntropyUnit.BtuPerPoundFahrenheit);
UnitsNet.MassFlow m1 = new UnitsNet.MassFlow(4356, UnitsNet.Units.MassFlowUnit.PoundPerMinute);
UnitsNet.Temperature t2 = new UnitsNet.Temperature(342, UnitsNet.Units.TemperatureUnit.DegreeRankine);
UnitsNet.Temperature t1 = new UnitsNet.Temperature(43, UnitsNet.Units.TemperatureUnit.DegreeRankine);
UnitsNet.Power q1 = UnitsNet.Power.FromWatts(p1.JoulesPerKilogramKelvin * m1.KilogramsPerSecond * (t2.Kelvins - t1.Kelvins));
//BtuPerPoundFahrenheit-- > JoulePerKilogramKelvin
//UnitsNet: 4186,8
//EngineeringUnits: 4186,816458133984
//UnitsNet dont not use a high precision for this conversion which gives a off result
//Difference in procent
Assert.AreEqual(0, HelperClass.Percent(P1.As(EngineeringUnits.SpecificEntropyUnit.JoulePerKilogramKelvin),
p1.As(UnitsNet.Units.SpecificEntropyUnit.JoulePerKilogramKelvin)), 0.0004);
Assert.AreEqual(0, HelperClass.Percent(P1.As(EngineeringUnits.SpecificEntropyUnit.BtuPerPoundRankine),
p1.As(UnitsNet.Units.SpecificEntropyUnit.BtuPerPoundFahrenheit)), 0);
Assert.AreEqual(0, HelperClass.Percent(M1.As(EngineeringUnits.MassFlowUnit.KilogramPerSecond),
m1.As(UnitsNet.Units.MassFlowUnit.KilogramPerSecond)), 0.0003);
//Assert.AreEqual(0, Q1.As(EngineeringUnits.PowerUnit.BritishThermalUnitPerHour) - q1.As(UnitsNet.Units.PowerUnit.BritishThermalUnitPerHour), 0);
//Assert.AreEqual(0, Q1.As(EngineeringUnits.PowerUnit.Kilowatt) - q1.As(UnitsNet.Units.PowerUnit.Kilowatt), 0);
//Assert.AreEqual(0, Q1.As(EngineeringUnits.PowerUnit.Watt) - q1.As(UnitsNet.Units.PowerUnit.Watt), 0);
//Difference in procent
Assert.AreEqual(0, HelperClass.Percent(Q1.As(EngineeringUnits.PowerUnit.BritishThermalUnitPerHour),
q1.As(UnitsNet.Units.PowerUnit.BritishThermalUnitPerHour)), 0.0003);
Assert.AreEqual(0, HelperClass.Percent(Q1.As(EngineeringUnits.PowerUnit.Kilowatt),
q1.As(UnitsNet.Units.PowerUnit.Kilowatt)), 0.00013);
Assert.AreEqual(0, HelperClass.Percent(Q1.As(EngineeringUnits.PowerUnit.Watt),
q1.As(UnitsNet.Units.PowerUnit.Watt)), 0.00013);
}
/// <summary>
/// <para>
/// Compare equality to another Power within the given absolute or relative tolerance.
/// </para>
/// <para>
/// Relative tolerance is defined as the maximum allowable absolute difference between this quantity's value and
/// <paramref name="other"/> as a percentage of this quantity's value. <paramref name="other"/> will be converted into
/// this quantity's unit for comparison. A relative tolerance of 0.01 means the absolute difference must be within +/- 1% of
/// this quantity's value to be considered equal.
/// <example>
/// In this example, the two quantities will be equal if the value of b is within +/- 1% of a (0.02m or 2cm).
/// <code>
/// var a = Length.FromMeters(2.0);
/// var b = Length.FromInches(50.0);
/// a.Equals(b, 0.01, ComparisonType.Relative);
/// </code>
/// </example>
/// </para>
/// <para>
/// Absolute tolerance is defined as the maximum allowable absolute difference between this quantity's value and
/// <paramref name="other"/> as a fixed number in this quantity's unit. <paramref name="other"/> will be converted into
/// this quantity's unit for comparison.
/// <example>
/// In this example, the two quantities will be equal if the value of b is within 0.01 of a (0.01m or 1cm).
/// <code>
/// var a = Length.FromMeters(2.0);
/// var b = Length.FromInches(50.0);
/// a.Equals(b, 0.01, ComparisonType.Absolute);
/// </code>
/// </example>
/// </para>
/// <para>
/// Note that it is advised against specifying zero difference, due to the nature
/// of floating point operations and using System.Double internally.
/// </para>
/// </summary>
/// <param name="other">The other quantity to compare to.</param>
/// <param name="tolerance">The absolute or relative tolerance value. Must be greater than or equal to 0.</param>
/// <param name="comparisonType">The comparison type: either relative or absolute.</param>
/// <returns>True if the absolute difference between the two values is not greater than the specified relative or absolute tolerance.</returns>
public bool Equals(Power other, double tolerance, ComparisonType comparisonType)
{
if (tolerance < 0)
{
throw new ArgumentOutOfRangeException("tolerance", "Tolerance must be greater than or equal to 0.");
}
double thisValue = (double)this.Value;
double otherValueInThisUnits = other.As(this.Unit);
return(UnitsNet.Comparison.Equals(thisValue, otherValueInThisUnits, tolerance, comparisonType));
}
