PHAS20, A Program for Simultaneous Multiple Regression of a Mathematical Model to Thermochemical Data

Abstract

PHAS20 performs simultaneous multiple regression of a mathematical model for the functional relations among thermodynamic quantities to experimental data for a group of chemically related species. The thermodynamic quantities included are heat capacity, entropy, enthalpy, free energy, equilibrium constant, electrochemical potential, and relative heat content. PHAS20 will fit the model to 70 sets of data containing a total of 1200 observations on 20 species. The program is divided into 4 major parts: (1) data input and editing, (2) multiple regression, (3) output of error plots and associated tubular data, and (4) output of tables of preliminary thermodynamic values. Listings are included.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1974
Accession Number
AD0780301

Entities

People

  • John L. Haas Jr.

Tags

Communities of Interest

  • Advanced Electronics
  • Cyber

DTIC Thesaurus Topics

  • Chemical Reaction Properties
  • Energy
  • Enthalpy
  • Enthalpy Changes
  • Free Energy
  • Heat Capacity
  • Heat Energy
  • Heat Of Formation
  • High Temperature
  • Mathematical Models
  • Operating Systems
  • Phase Transformations
  • Precision
  • Thermodynamic Properties
  • Thermodynamics
  • Three Dimensional
  • Transitions

Readers

  • Combustion science or combustion engineering.
  • Environmental Engineering.
  • Regression Analysis.