Register free of charge. Forgot your password? Companies; DDBST Dortmund Data Bank Software +. DDBST Dortmund Data Bank Software + Separation Technology GmbH. Show phone number. Show fax number. 10 26129 Oldenburg Germany. Request information now. Profile On location. DDB Access Package: Data Storage, Retrieval, Plotting and Export This essential component of the Dortmund Data Bank provides data storage, data input editors, retrieval, graphical representation, import/export for all data banks including complete data directory and demo versions of all non-licensed data banks.

Dortmund Data Bank

Type

Data Bank

Time complexity in big O notation

Algorithm	Average	Worst case

The Dortmund Data Bank^[1] (short DDB) is a factual data bank for thermodynamic and thermophysical data. Its main usage is the data supply for process simulation where experimental data are the basis for the design, analysis, synthesis, and optimization of chemical processes. The DDB is used for fitting parameters for thermodynamic models like NRTL or UNIQUAC and for many different equations describing pure component properties, e.g., the Antoine equation for vapor pressures. The DDB is also used for the development and revision of predictive methods like UNIFAC and PSRK.

Contents[edit]

Mixture properties[edit]

Double Azeotrope of Benzene and Hexafluorobenzene, taken from Dortmund Data Bank

Phase equilibria data (vapor–liquid, liquid–liquid, solid–liquid), data on azeotropy and zeotropy
Gas solubilities
Activity coefficients at infinite dilution
Heat capacities and excess heat capacities
Volumes, densities, and excess volumes (volume effect of mixing)
Salt solubilities

The mixture data banks contain currently (April 2007) approx. 308,000 data sets with 2,157,000 data points for 10750 components building 84870 different binary, ternary, and higher systems/combinations.

Pure component properties[edit]

Vapor pressure diagrams of Water

Saturated vapor pressures
Saturated densities
Critical data (T_c, P_c, V_c)
Heats of fusion, sublimation and vaporization
Heats of formation and combustion
Heats and temperatures of transitions for solids
P-v-T data including virial coefficients
Energy functions
Enthalpies and entropies

The pure component properties data bank contains currently (April 2007) approx. 157,000 data sets with 1,080,000 data points for 16700 different components.

Surface tension of benzene
Dynamic viscosity of water
Heat of vaporization of water, methanol, benzene, and acetone

Data sources[edit]

The DDB is a collection of experimental data published by the original authors. All data are referenced and a quite large literature data bank is part of the DDB, currently containing more than 92,000 articles, books, private communications, deposited documents from Russia (VINITI), the Ukraine (Ukrniiti) and other former USSR states, company reports (mainly from former GDR companies), theses, patents, and conference contributions.

Secondary sources like data collections are normally neglected and only used as a literature source. Derived data are also not collected with the main exception of the azeotropic data bank which is built partly from evaluated vapor–liquid equilibrium data.

History[edit]

The Dortmund Data Bank was founded in the 1970s at the University of Dortmund in Germany. The original reason for starting a vapor–liquid phase equilibria data collection was the development^[2] of the group contribution methodUNIFAC which allows to estimate vapor pressures of mixtures.

The DDB has since been extended to many other properties and has increased dramatically in size also because of intensive (German) government aid. The funding has ended and the further development and maintenance is performed by DDBST GmbH, a company founded by members of the industrial chemistry chair of the Carl von OssietzkyUniversity of Oldenburg, Germany.

Additional contributors are the DECHEMA, the FIZ CHEMIE (Berlin), the Technical University in Tallinn, and others.

Availability[edit]

The Dortmund Data Bank is distributed by DDBST GmbH as in-house software. Many parts of the Dortmund Data Bank are also distributed as part of the DETHERM data bank which is also available online.

References[edit]

^Onken U., Rarey-Nies J., Gmehling J., 'The Dortmund Data Bank: A Computerized System for Retrieval, Correlation, and Prediction of Thermodynamic Properties of Mixtures', Int.J.Thermophys., 10(3), 739-747, 1989
^Gmehling J., Weidlich U., 'Die Dortmunder Datenbank. Basis für die Weiterentwicklung der UNIFAC-Methode', Chem.Ing.Tech., 57(5), 447-449, 1985

External links[edit]

Topological Analysis of the Gibbs Energy Function (Liquid-Liquid Equilibrium Correlation Data). Including a Thermodinamic Review and a Graphical User Interface (GUI) for Surfaces/Tie-lines/Hessian matrix analysis - University of Alicante

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Dortmund_Data_Bank&oldid=992355728'

Since the start of the DDB in 1973, a large number of software tools have been developed to search, retrieve, export, visualize and regress the data. Later these programs were extended to cover further applications like e.g. process synthesis. At the same time, data and parameter communication with other software products was enhanced. Today it is even possible to use the thermodynamic calculation engines of Aspen Plus^®, UniSim Design^®, Simulis Thermodynamics^®or Pro/II^® from inside the DDB.

All programs have been integrated under the MS-Windows graphical user interface and can be easily used even without studying the manuals.

The following table compiles most of the major parts. Detailed information can be found on the separate linked pages.

DDB Access Package

This essential component of the Dortmund Data Bank provides data storage, data input editors, retrieval, graphical representation, import/export for all data banks including complete data directory and demo versions of all non-licensed data banks.. <more>

Pure Property Regression Add-On

The regression add-on for pure component properties allows for extended parameter fitting, calculation and graphical representation options for various correlation equations for the different pure component properties that allow customization of simulation software for a better description of your specific mixtures.. <more>

Mixture Prediction Add-On

The predictive methods UNIFAC, mod. UNIFAC, PSRK, VTPR, COSMO-SAC, COSMO-RS(Ol) as well as calculation via Aspen Plus^® , ProII^®[, UniSim^®and Simulis Thermodynamics^®are provided to estimate data and binary parameters. Third-Party software is not part of the Mixture Prediction Add-On. Included are s-profiles for 25 components and GC2GE).. <more>

Dortmund Data Bank Software Package Free

Prediction Parameters Add-On

In order to provide reliable model parameters for the calculation of pure component and mixture properties, DDBST is for some time engaged in regression of the different data from the DDB. Currently numerous parameter sets are available.. <more>

Simultaneous Mixture Regression Add-On

These programs are used for the rapid simultaneous regression of any number of binary phase equilibrium and excess property data sets using g^E-models.. <more>