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State Behavior Database for Pure Liquids and Data Correlation

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Abstract

A database system designed for storage, maintenance, and evaluation of published experimental data related to the state behavior of pure liquids is described. The database system is maintained by a program package (FoxPro) that allows the effective and user-friendly process to enter, store, handle, and update the information starting from a bibliography and ending in a data evaluation. Evaluation of data is performed using either two functions of temperature for data at 0.1 MPa or at saturation or the Tait equation for density data at elevated pressures. The weighted least-squares method is employed to evaluate the adjustable parameters of smoothing functions. Search and export program modules allow various views, searches, and outputs of the content of the databases. At present, the database system contains about 4,400 records in the bibliographic part, more than 100,000 experimental data points for about 500 substances, and over 800 sets of parameters of smoothing functions for about 330 substances. The database system is intended as an effective tool for compilation and critical evaluation of data, not as a commercial databank for distribution.

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Authors and Affiliations

  1. Department of Physical Chemistry, Institute of Chemical Technology, Technická 5, 166 28, Prague, Czech Republic

    I. Cibulka

  2. Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan

    T. Takagi

Authors
  1. I. Cibulka
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  2. T. Takagi
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Correspondence to I. Cibulka.

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Cibulka, I., Takagi, T. State Behavior Database for Pure Liquids and Data Correlation. International Journal of Thermophysics 25, 361–369 (2004). https://doi.org/10.1023/B:IJOT.0000028473.56573.54

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  • DOI: https://doi.org/10.1023/B:IJOT.0000028473.56573.54

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