The standard helium liquefier and refrigerator range, called HELIAL, designed by AIR LIQUIDE DTA, has been upgraded with significant improvement of efficiency as a result of technological development.. Indeed in the demanding high tech markets, (international laboratories, aerospace applications, synchrotrons, HTS applications...), cryogenic systems must provide increasingly high performances. The new HELIAL Evolution is equipped with AIR LIQUIDE DTA's expansion turbines, well known for their extremely high reliability and efficiency,. The results of this development endowing the HELIAL Evolution with twice liquefaction capacity, are presented in this paper.
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