Properties and phase equilibria (PROPER)

The program is designed with new improved methods for calculation of properties and now features a context-sensitive help file. It calculates:

• Up to 17 property values at one temperature or over a temperature range

• Density	Thermal conductivity	Binary diffusion coefficients
  Dynamic viscosity	Thermal expansion coefficient	Prandtl number
  Kinematic viscosity	Surface tension	Lewis number
  Specific heat capacity cp	Enthalpy	Thermal diffusivity
  Specific heat capacity cv	Enthalpy of evaporation (pure substances)	Molecular weight (mixtures)
  Isentropic exponent cp/cv	Compressibility

• Phase equilibria of pure substances or mixtures.

The scope of the program has been broadened with a method for the calculation of specific heat capacity of monovalent alcohols, such as methanol, ethanol and propanol. Also, additional refrigerants, namely R22, R23, R32, R123, R134a, R142b, R152a, have been included in the data base for the first time.

PROPER can also be called by any module within the ATLAS Program System for generation of properties. An automatic call of the generated properties is integrated in the System.

PROPER (1 licence): 2.100,-- EUR plus VAT

Extensions:

1. CUT properties

Properties of hydrocarbon cuts are available for special applications. The calculations are based on the ASTM D86 curve and the Watson K factor.

Additional charge: 600,-- EUR plus VAT

2. Phase equilibria

DDB: Calculation of gas-liquid phase equilibria with the PSRK method for maximum 10 components. The calculation is based on the Dortmunder data base of DDBST GmbH of Oldenburg (Prof. Gmehlin). This method is recommended for systems which deviate greatly from ideality. The properties of the vapor and liquid phases are calculated using the concentrations in the vapor and liquid phases.

The program does not calculate mixtures with a miscibility gap, i.e. mixtures where the liquid phase breaks up in two phases, like for example in a ‚water-oil‘ mixture.

Additional charge: 500,-- EUR plus VAT

3. PROP module as interface module to MS-EXCEL

Additional charge: 445,-- EUR plus VAT

Literature

[1] Reid R. C., Prausnitz J. M., Poling B. E. "The Properties of Gases & Liquids", McGraw Hill, 4th edition 1987

[2] Poling Bruce E., Prausnitz John M., O’Connell John P. "The Properties of Gases & Liquids", McGraw Hill, 5th edition 2001

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