The Joule-Thomson Effect in Mixtures of Helium and Argon

Abstract

The Joule‐Thomson effect has been measured in four mixtures of helium and argon. The apparatus and methods are those used repeatedly in previous work. The measurements of the isenthalpic curves cover the range — 100° to 250°C and up to 200 atmos. From these measurements μ has been computed and plotted, and the trends with temperature, pressure, and composition are shown. μ is read from these curves and tabulated. In part of the region μ = 0 and these inversion curves are plotted as functions of pressure, temperature, and composition. Mixtures of helium and nitrogen have been similarly measured.