Solubility of Helium in Liquid Argon, Oxygen, and Carbon Monoxide.

Abstract

NOMENCLATURE P, = vapor pressure of pure component i at equilibrium temperax, = mole fraction of component i in the liquid phaae y8 = mole fraction of component i in the vapor phase 7 , = activity coefficient of component i x = total pressure, mm. of Hg Subscripts ture, mm. of Hg 1 = hexamethyldisiloxane 2 = n-propyl alcohol ACKNOWLEDGMENT The services of R. Engineering students, in the experimental phases of this investigation, are gratefully acknowledged.Figure 3. Density at 25" C. vs. weight fraction hexamethyldisiloxane for the system hexamethyldisiloxane-n-propyl alcohol Data were obtained for the solubility of helium at pressures up to 2000 p.s.i.a. in liquid argon at temperatures of -125O, -140°, -160°, and -180°C.; in liquid oxygen at -130°, -145', -160°, -180°, and -195.8"C.; and in liquid carbon monoxide at -145', -160', -180°, and -195.8" C. A static sampling technique was used and samples were analyzed by gas chromatography. The data are presented in temperature-composition and pressure-composition diagrams. A comparison is madebetween the data of this study and previously published data for the helium-argon and helium-oxygen systems.

Vapor-liquid equilibriums data for helium-carbon monoxide and helium-nitrous oxide systems

“…Measured vapor pressures are included because they differ from the correlation of Hust and Stewart (4). Figure 1 shows pseudo-Henry's law constants from our data and from Sinor and Kurata's (7) data. The Henry's law constant is defined here as H=(P-P\)!x2 (1) Sinor and Kurata's data were reduced using vapor pressures from Hust and Stewart.…”

Attainable Superheat of Argon−Helium, Argon−Neon Solutions

“…The concentration of the solution was determined immediately in the cell by the pressure of saturated vapors before and after the experiments. Data on phase equilibria for argon−helium systems and an argon−neon system , were used.…”

Liquid oxygen liquid acquisition device bubble point tests with high pressure lox at elevated temperatures

“…For gaseous helium (GHe) in liquid oxygen, this has been measured by Sinor and Kurata [8] Even though the proposed operating conditions for higher pressure fed engines are not likely to exceed 2.24 MPa (325 psia), there is still a significant amount of helium that can be dissolved into the liquid oxygen. While there is no data suggesting that the properties of the liquid oxygen will be significantly altered by this dissolved helium content, this remains to be verified.…”