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Some Theoretic Aspects of the Use of Inert Gases in Sealed Cabin Environments

Emanuel Roth

出版	USAF School of Aviation Medicine, 1959
URL	http://books.google.com.hk/books?id=xe4suAAACAAJ&hl=&source=gbs_api

註釋

The physical analysis of decompression bubbles within the body was reviewed in an attempt to provide a working model for selection of several inert gas combinations in sealed cabins. The maximum bubble size and symptom frequency after decompression appear to be proportional to a gas factor (solubility in oil times diffusion coefficient in oil divided by solubility in water). The inert gases - helium, neon, argon, krypton, xenon, and nitrogen - were compared with this relationship in mind. Helium appears to be 4 times and neon 1.4 times more effective than nitrogen in minimizing symptoms after decompression. Review of the literature on diving and experimental studies with inert gases corroborated the advantages of helium and neon over the others. The side effects of these gases and logistic considerations were discussed and over-all factors governing the use of inert gases in operational sealed cabins were outlined.