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Difluoromethane Class

State equations and constants of difluoromethane. Short name: R32. Synomym: HFC-32. Chemical formula: CH2F2.
Inheritance Hierarchy

Namespace: Altaxo.Science.Thermodynamics.Fluids
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
Syntax
C#
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public class Difluoromethane : HelmholtzEquationOfStateOfPureFluidsBySpanEtAl

The Difluoromethane type exposes the following members.

Properties
 NameDescription
Public propertyAcentricFactorGets the acentric factor.
(Overrides HelmholtzEquationOfStateOfPureFluidsAcentricFactor)
Public propertyCASRegistryNumberGets the CAS registry number.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlCASRegistryNumber)
Public propertyChemicalFormulaThe chemical formula of the fluid.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlChemicalFormula)
Public propertyCriticalPointMassDensityGets the mass density at the critical point in kg/m³.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public propertyCriticalPointMoleDensityGets the mole density at the critical point in mol/m³.
(Overrides HelmholtzEquationOfStateOfPureFluidsCriticalPointMoleDensity)
Public propertyCriticalPointPressureGets the pressure at the critical point in Pa.
(Overrides HelmholtzEquationOfStateOfPureFluidsCriticalPointPressure)
Public propertyCriticalPointTemperatureGets the temperature at the critical point in K.
(Overrides HelmholtzEquationOfStateOfPureFluidsCriticalPointTemperature)
Public propertyDipoleMomentGets the dipole moment in Debye.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlDipoleMoment)
Public propertyFluidFamilyThe chemical formula of the fluid.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlFluidFamily)
Public propertyFullNameThe full name of the fluid.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlFullName)
Public propertyStatic memberInstanceGets the (only) instance of this class.
Public propertyIsMeltingPressureCurveImplemented
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public propertyIsSublimationPressureCurveImplemented
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public propertyLowerTemperatureLimitGets the lower temperature limit of this model in K.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlLowerTemperatureLimit)
Public propertyMolecularWeightGets the molecular weight in kg/mol.
(Overrides HelmholtzEquationOfStateMolecularWeight)
Public propertyNormalBoilingPointTemperatureGets the boiling temperature at normal pressure (101325 Pa) in K (if existent). If not existent, the return value is null.
(Overrides HelmholtzEquationOfStateOfPureFluidsNormalBoilingPointTemperature)
Public propertyNormalSublimationPointTemperatureGets the sublimation temperature at normal pressure (101325 Pa) in K (if existent). If not existent, the return value is null.
(Overrides HelmholtzEquationOfStateOfPureFluidsNormalSublimationPointTemperature)
Public propertyReducingMassDensity Gets the density (in kg/m³) used to calculate the reduced (dimensionless) density.
(Inherited from HelmholtzEquationOfState)
Public propertyReducingMoleDensity Gets the molar density (in mol/m³) used to calculate the reduced (dimensionless) density.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public propertyReducingTemperature Gets the temperature (in Kelvin) that is used to calculate the inverse reduced temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public propertyShortNameThe short name of the fluid.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlShortName)
Public propertySynonymThe synonym of the name of the fluid.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlSynonym)
Public propertyTriplePointPressureGets the triple point pressure in Pa.
(Overrides HelmholtzEquationOfStateOfPureFluidsTriplePointPressure)
Public propertyTriplePointSaturatedLiquidMassDensityGets the saturated liquid density at the triple point in kg/m³.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public propertyTriplePointSaturatedLiquidMoleDensityGets the triple point liquid mole density in mol/m³.
(Overrides HelmholtzEquationOfStateOfPureFluidsTriplePointSaturatedLiquidMoleDensity)
Public propertyTriplePointSaturatedVaporMassDensityGets the saturated vapor density at the triple point in kg/m³.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public propertyTriplePointSaturatedVaporMoleDensityGets the triple point vapor mole density in mol/m³.
(Overrides HelmholtzEquationOfStateOfPureFluidsTriplePointSaturatedVaporMoleDensity)
Public propertyTriplePointTemperatureGets the triple point temperature in K.
(Overrides HelmholtzEquationOfStateOfPureFluidsTriplePointTemperature)
Public propertyUN_NumbersThe UN number of the fluid.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlUN_Numbers)
Public propertyUpperMoleDensityLimitGets the upper density limit of this model in mol/m³.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlUpperMoleDensityLimit)
Public propertyUpperPressureLimitGets the upper pressure limit of this model in Pa.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlUpperPressureLimit)
Public propertyUpperTemperatureLimitGets the upper temperature limit of this model in K.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlUpperTemperatureLimit)
Public propertyWorkingSpecificGasConstant Gets the specific gas constant of the fluid. Is calculated from WorkingUniversalGasConstant and MolecularWeight.
(Inherited from HelmholtzEquationOfState)
Public propertyWorkingUniversalGasConstantThe Universal Gas Constant R at the time the model was developed.
(Overrides HelmholtzEquationOfStateOfPureFluidsBySpanEtAlWorkingUniversalGasConstant)
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Methods
 NameDescription
Public methodEqualsDetermines whether the specified object is equal to the current object.
(Inherited from Object)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object)
Public methodGetDeltaFromMassDensity Gets the reduced density by density / ReducingMassDensity.
(Inherited from HelmholtzEquationOfState)
Public methodGetDeltaFromMoleDensity Gets the reduced density by density / ReducingMassDensity.
(Inherited from HelmholtzEquationOfState)
Public methodGetHashCodeServes as the default hash function.
(Inherited from Object)
Public methodGetTauFromTemperature Gets the inverse reduced temperature by ReducingTemperature / temperature.
(Inherited from HelmholtzEquationOfState)
Public methodGetTypeGets the Type of the current instance.
(Inherited from Object)
Public methodIsentropicDerivativeOfMassSpecificVolumeWrtPressure_FromMoleDensityAndTemperature Gets the isentropic (adiabatic) derivative of the mass specific volume w.r.t. pressure from mole density and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodIsentropicDerivativeOfMoleSpecificVolumeWrtPressure_FromMoleDensityAndTemperature Gets the isentropic (adiabatic) derivative of the mole specific volume w.r.t. pressure from mole density and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodIsothermalCompressibility_FromMassDensityAndTemperature Gets the isothermal compressibility in 1/Pa from mass density (kg/m³) and temperature (K). Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodIsothermalCompressibility_FromMoleDensityAndTemperature Gets the isothermal compressibility in 1/Pa from mole density (mol/m³) and temperature (K). Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodIsothermalCompressionalModulus_FromMassDensityAndTemperature Gets the isothermal compressional modulus K in Pa from density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodIsothermalCompressionalModulus_FromMoleDensityAndTemperature Gets the isothermal compressional modulus in Pa from density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodIsothermalDerivativePressureWrtMassDensity_FromMassDensityAndTemperature Gets the derivative of pressure w.r.t. the mass density at isothermal conditions. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodIsothermalDerivativePressureWrtMoleDensity_FromMoleDensityAndTemperature Gets the derivative of pressure w.r.t. the mole density at isothermal conditions. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassDensity_FromMoleDensity Gets the mass density (in kg/m³) from mole density (in mol/m³).
(Inherited from HelmholtzEquationOfState)
Public methodMassDensity_FromPressureAndTemperature(Double, Double, Double) Gets the mass density for a given pressure and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodMassDensity_FromPressureAndTemperature(Double, Double, Double, Double) Gets the mole density from a given pressure and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificEnthalpy_FromMassDensityAndTemperature Get the enthalpy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificEnthalpy_FromMoleDensityAndTemperature Get the enthalpy from a given density and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificEntropy_FromMassDensityAndTemperature Get the entropy from a given mole density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificEntropy_FromMoleDensityAndTemperature Get the entropy from a given mole density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificGibbsEnergy_FromMassDensityAndTemperature Get the mass specific Gibbs energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificGibbsEnergy_FromMoleDensityAndTemperature Get the mass specific Gibbs energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificHelmholtzEnergy_FromMassDensityAndTemperature Get the Helmholtz energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificHelmholtzEnergy_FromMoleDensityAndTemperature Get the mass specific Helmholtz energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificInternalEnergy_FromMassDensityAndTemperature Get the internal energy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificInternalEnergy_FromMoleDensityAndTemperature Get the internal energy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificIsobaricHeatCapacity_FromMassDensityAndTemperature Gets the isobaric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificIsobaricHeatCapacity_FromMoleDensityAndTemperature Gets the isobaric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificIsochoricHeatCapacity_FromMassDensityAndTemperature Get the isochoric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMassSpecificIsochoricHeatCapacity_FromMoleDensityAndTemperature Get the isochoric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Protected methodMeltingPressure_Type1
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodMeltingPressure_Type2
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodMeltingPressure_TypeH(Double) Melting pressure for water. Note that more than one pressure value is possible for a given temperature. If in doubt, the lowest pressure solution is returned.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodMeltingPressure_TypeH(Double, Int32)
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodMeltingPressureEstimate_FromTemperature
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodMeltingPressureEstimateAndDerivativeWrtTemperature_FromTemperature Gets an estimate value of the melting pressure and the derivative of the pressure w.r.t. temperature for a given temperature. The estimated value should have an relative accuracy of 5% plus an absolute error of about 100 Pa.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodMeltingTemperatureEstimate_FromPressure Gets an estimate of the melting temperature for a given pressure, using Newton-Raphson iteration.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object.
(Inherited from Object)
Public methodMoleDensity_FromMassDensity Gets the mole density (in mol/m³) from mass density (in kg/m³).
(Inherited from HelmholtzEquationOfState)
Public methodMoleDensity_FromPressureAndTemperature(Double, Double, Double) Get the mole density for a given pressure and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodMoleDensity_FromPressureAndTemperature(Double, Double, Double, Double) Gets the mole density from a given pressure and temperature.
(Inherited from HelmholtzEquationOfState)
Public methodMoleDensityEstimates_FromPressureAndTemperature Gets an estimate of the mole densities at a given pressure and temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public methodMoleSpecificEnthalpy_FromMassDensityAndTemperature Get the enthalpy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificEnthalpy_FromMoleDensityAndTemperature Get the enthalpy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificEntropy_FromMassDensityAndTemperature Get the entropy from a given mole density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificEntropy_FromMoleDensityAndTemperature Get the entropy from a given mole density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificGibbsEnergy_FromMassDensityAndTemperature Get the mole specific Gibbs energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificGibbsEnergy_FromMoleDensityAndTemperature Get the mole specific Gibbs energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificHelmholtzEnergy_FromMassDensityAndTemperature Get the Helmholtz energy from a given mass density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificHelmholtzEnergy_FromMoleDensityAndTemperature Get the Helmholtz energy from a given mole density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificInternalEnergy_FromMassDensityAndTemperature Get the internal energy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificInternalEnergy_FromMoleDensityAndTemperature Get the internal energy from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificIsobaricHeatCapacity_FromMassDensityAndTemperature Gets the isobaric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificIsobaricHeatCapacity_FromMoleDensityAndTemperature Gets the isobaric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificIsochoricHeatCapacity_FromMassDensityAndTemperature Get the mole specific isochoric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodMoleSpecificIsochoricHeatCapacity_FromMoleDensityAndTemperature Get the mole specific isochoric heat capacity from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodPhi0_OfReducedVariables Phi0s the of reduced variables. (Page 1541, Table 28 in [2])
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhi0_tau_OfReducedVariables First derivative of Phi0 the of reduced variables with respect to the inverse reduced temperature. (Page 1541, Table 28)
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhi0_tautau_OfReducedVariables Second derivative of Phi0 the of reduced variables with respect to the inverse reduced temperature. (Page 1541, Table 28)
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhiR_delta_OfReducedVariables Calculates the first derivative of the residual part of the dimensionless Helmholtz energy with respect to the reduced density delta.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhiR_deltadelta_OfReducedVariables Calculates the second derivative of the residual part of the dimensionless Helmholtz energy with respect to the reduced density delta.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhiR_deltatau_OfReducedVariables Calculates the derivative of the residual part of the dimensionless Helmholtz energy with respect to the reduced density delta and the inverse reduced temperature tau.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhiR_OfReducedVariables Calculates the residual part of the dimensionless Helmholtz energy in dependence on reduced density and reduced inverse temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhiR_tau_OfReducedVariables Calculates the first derivative of the residual part of the dimensionless Helmholtz energy with respect to the inverse reduced temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPhiR_tautau_OfReducedVariables Calculates the second derivative of the residual part of the dimensionless Helmholtz energy with respect to the inverse reduced temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodPressure_FromMassDensityAndTemperature Get the pressure from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodPressure_FromMoleDensityAndTemperature Gets the pressure from a given molar density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodSaturatedLiquidAndVaporMoleDensitiesAndPressure_FromTemperature(Double, Double) Gets the saturated liquid mole density, the saturated vapor mole density, and the pressure for a given temperature. This is done by iteration, using multivariate Newton-Raphson.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public methodSaturatedLiquidAndVaporMoleDensitiesAndPressure_FromTemperature(Double, Double, Double, Double) Gets the saturated liquid mole density, the saturated vapor mole density, and the pressure for a given temperature. This is done by iteration, using multivariate Newton-Raphson.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public methodSaturatedLiquidAndVaporMoleDensitiesAndTemperature_FromPressure Gets the saturated liquid mole density, the saturated vapor mole density, and the temperature for a given pressure. This is done by iteration, using multivariate Newton-Raphson.
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public methodSaturatedLiquidMoleDensityEstimate_FromTemperature Gets an estimate for the saturated liquid mole density in dependence on the temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedMoleDensity_Type1
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedMoleDensity_Type2
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedMoleDensity_Type3
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedMoleDensity_Type4
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedMoleDensity_Type5
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedMoleDensity_Type6
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSaturatedVaporMoleDensityEstimate_FromTemperature Gets an estimate for the saturated vapor mole density in dependence on the temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedVaporPressure_Type1
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedVaporPressure_Type2
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedVaporPressure_Type3
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedVaporPressure_Type4
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedVaporPressure_Type5
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSaturatedVaporPressure_Type6
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSaturatedVaporPressureEstimate_FromTemperature Gets an estimate for the saturated vapor pressure in dependence on the temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSaturatedVaporPressureEstimateAndDerivativeWrtTemperature_FromTemperature Gets an estimate for the saturated vapor pressure in dependence on the temperature as well as for the derivative of the saturated vapor pressure with respect to the temperature.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSaturatedVaporTemperature_FromPressure Get the temperature at the liquid/vapor interface for a given pressure by iteration (Newton-Raphson).
(Inherited from HelmholtzEquationOfStateOfPureFluids)
Public methodSpeedOfSound_FromMassDensityAndTemperature Get the speed of sound from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Public methodSpeedOfSound_FromMoleDensityAndTemperature Get the speed of sound from a given density and temperature. Attention - unchecked function: it is presumed, but not checked (!), that the given parameter combination describes a single phase fluid!.
(Inherited from HelmholtzEquationOfState)
Protected methodSublimationPressure_Type1
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSublimationPressure_Type2
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected methodSublimationPressure_Type3
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSublimationPressureEstimate_FromTemperature
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSublimationPressureEstimateAndDerivativeWrtTemperature_FromTemperature
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodSublimationTemperatureEstimate_FromPressure Gets an estimate of the sublimation temperature for a given pressure, using Newton-Raphson iteration.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Public methodToStringReturns a string that represents the current object.
(Inherited from Object)
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Fields
 NameDescription
Protected field_alpha0_CoshThe prefactors outside and inside the argument of the Cosh terms in the equation of the ideal part of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_Exp Prefactor and exponent of the exponential terms in the ideal part of the residual Helmholtz energy. Page 429 Table 6.1 in [2]
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_n_constThe constant term in the equation of the ideal part of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_n_lntauThe term with the factor ln(tau) in the equation of the ideal part of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_n_tauThe term with the factor tau in the equation of the ideal part of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_n_taulntauThe term with the factor tau*ln(tau) in the equation of the ideal part of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_Poly
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alpha0_SinhThe prefactors outside and inside the argument of the Sinh terms in the equation of the ideal part of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alphaR_Exp Parameter for the exponential terms of the reduced Helmholtz energy. term = ni * tau^ti * delta^di * Exp(gi * delta^li) with gi normally equal to -1.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alphaR_Gauss
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alphaR_Nonanalytical
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_alphaR_Poly Parameter for the polynomial terms of the reduced Helmholtz energy.
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_meltingPressure_Coefficients
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_meltingPressure_ReducingPressure
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_meltingPressure_ReducingTemperature
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_meltingPressure_Type
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_saturatedLiquidDensity_Coefficients
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_saturatedLiquidDensity_Type
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_saturatedVaporDensity_Coefficients
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_saturatedVaporDensity_Type
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_saturatedVaporPressure_Coefficients
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_saturatedVaporPressure_Type
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_sublimationPressure_PolynomialCoefficients1
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_sublimationPressure_PolynomialCoefficients2
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_sublimationPressure_PolynomialCoefficients3
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_sublimationPressure_ReducingPressure
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_sublimationPressure_ReducingTemperature
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
Protected field_sublimationPressure_Type
(Inherited from HelmholtzEquationOfStateOfPureFluidsBySpanEtAl)
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Remarks

References:

The source code was created automatically using the fluid file 'r32.fld' from the following software:

TREND 3.0.: Span, R.; Eckermann, T.; Herrig, S.; Hielscher, S.; Jäger, A.; Thol, M. (2016): TREND.Thermodynamic Reference and Engineering Data 3.0.Lehrstuhl für Thermodynamik, Ruhr-Universität Bochum.

Further references (extracted from the fluid file):

EquationOfState (EOS): Tillner-Roth, R. and Yokozeki, A., "An international standard equation of state for difluoromethane (R-32) for temperatures from the triple point at 136.34 K to 435 K and pressures up to 70 MPa," J. Phys. Chem. Ref. Data, 26(6):1273-1328, 1997.

HeatCapacity (CPP): Tillner-Roth, R. and Yokozeki, A., "An international standard equation of state for difluoromethane (R-32) for temperatures from the triple point at 136.34 K to 435 K and pressures up to 70 MPa," J. Phys. Chem. Ref. Data, 26(6):1273-1328, 1997.

Saturated vapor pressure: Cullimore, I.D., 2010.

Saturated liquid density: Cullimore, I.D., 2010.

Saturated vapor density: Cullimore, I.D., 2010.

See Also