Measurements of Impurity Concentration for a Helium Compressor

Hidemasa YAMAMURA; Shinichiro KASHIHARA; Yukio WATANABE; Eigo TADA; Katsuaki FUKUSADA; Toshimasa SHIMODA; Kaoru MASUDA; Mamoru AOKI; Syuichiro SUDA

doi:10.2221/jcsj.29.28

Hidemasa YAMAMURA, Shinichiro KASHIHARA, Yukio WATANABE, Eigo TADA, Katsuaki FUKUSADA, Toshimasa SHIMODA, Kaoru MASUDA, Mamoru AOKI, Syuichiro SUDA

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Keywords: screw compressor, lubricant, impurities, heatproof, helium liquefier/refrigerator

JOURNAL FREE ACCESS

1994 Volume 29 Issue 1 Pages 28-33

DOI https://doi.org/10.2221/jcsj.29.28

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Abstract

Lubricant for a helium compressor requires not only lubrication but also few evolving rate of impurities, because helium refrigerators should be operated stably and continuously for a long time. In this investigation, evolving gases of different types of lubricant were measured to pay attention to heatproof and evolving gases at present operating compressors. It was found that specially refined mineral oil was suitable at the point of heatproof and economy as lubricant for a helium compressor.

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