Accession Number:

AD0687269

Title:

A CLASS OF TWO-PHASE STATE EQUATIONS

Descriptive Note:

George D. /Kahl

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1969-03-01

Pagination or Media Count:

36.0

Abstract:

The properties of a particular class of elementary, two-phase state equations are found to be simply related. The class includes some familiar equations, such as the Van der Waals, Berthelot, and Clausius types, as well as a form recently suggested by J. J. Martin. Conditions for stable equilibrium are given, and some examples are compared. A table of values is included which can be used with elementary transformations to find the equilibrium coexistence properties of any member of the set. A drawback for this type equation along the critical isotherm is noted.

Descriptors:

• *EQUATIONS OF STATE
• *PHASE STUDIES
• ANALYTIC FUNCTIONS
• HEAT OF VAPORIZATION
• PRESSURE
• SPECIFIC HEAT
• TEMPERATURE
• TRANSFORMATIONS(MATHEMATICS)
• VAPOR PRESSURE

Subject Categories:

• Physical Chemistry
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE