Abstract
The helium-nitrogen system has been studied by several investigators [1–8]. The highest temperatures studied were 121.74°K by Streett [8], 122.8°K by Buzyna, Macriss, and Ellington [1], and 123.1°K by Porter [6]. Scientific interest in the critical behavior of this system—important in the production of high-purity helium from natural gas—has been stimulated recently by Streett’s work, which revealed minimum critical conditions at 119.89°K and 8500 psia, and by further investigation by Streett and Hill [9] to higher pressures, which showed that the critical conditions continued to increase from the minimum to at least 136.5°K and almost 4000 atm.
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References
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Tully, P.C., DeVaney, W.E., Rhodes, H.L. (1971). Phase Equilibria of the Helium-Nitrogen System from 122 to 126°K. In: Timmerhaus, K.D. (eds) Advances in Cryogenic Engineering. Advances in Cryogenic Engineering, vol 16. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-0244-6_11
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DOI: https://doi.org/10.1007/978-1-4757-0244-6_11
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