Accession Number : AD0612052

Title :   EXPERIMENTAL PROGRAM TO DETERMINE THE THERMODYNAMIC PROPERTIES OF SOLUTIONS OF LIQUEFIED LIGHT GASES.

Descriptive Note : Rept. for Apr 62-Oct 64,

Corporate Author : COLORADO UNIV BOULDER

Personal Author(s) : Barrick,Paul L. ; Herring,Richard N.

Report Date : OCT 1964

Pagination or Media Count : 186

Abstract : An experimental investigation was conducted to measure the gas-liquid solubilities for the helium-oxygen system at equilibrium conditions. The apparatus used was based on the vapor recirculation method of effecting equilibria and was constructed to operate at low temperatures and moderate pressures. Environmental conditions for the equilibrium cell were provided in a dewar-type cryostat with instrumentation for accurate temperature and pressure control in addition to the required communications for normal operation of an equilibrium apparatus. The system was studied in the temperature range 70K to 150K and at pressures up to 200 atmospheres with the data being obtained in isothermal form at 70, 76, 90, 110, 130, 144, and 150K. A thermodynamic analysis was made on the data to evaluate both the accuracy and self-consistency of the isotherms. Methods based on the GibbsDuhem equation and regular solution theory were used in addition to a molecular physics based theory for extracting Henry's law constants, heats of solution, and partial molar volumes.

Descriptors :   (*THERMODYNAMICS, LIQUEFIED GASES), (*LIQUEFIED GASES, SOLUTIONS(MIXTURES)), CRYOGENICS, HEAT TRANSFER, GAS ANALYSIS, HEAT OF SOLUTION, HELIUM, OXYGEN, MIXTURES, PHASE STUDIES, TEST EQUIPMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE