| 摘要 |
<p>A gas at superatmospheric pressure is supplied via a first pre-cooling heat exchanger 50 to a cryogenerator (54) and is condensed there, while the condensate is then conducted through a liquid separator 60 and is cooled and subcooled, respectively, in a second heat exchanger 72 which is situated in liquid already produced in a thermally insulated reservoir. The sub-cooling is effected by means of a pressure controller 80 downstream of the second heat exchanger (72) and is regulated by the adjustment of the user pressure (second pressure). The cold for the first heat exchanger (50) is extracted from the evaporated gas in the reservoir which was caused to evaporate by the second heat exchanger (72). The method is used inter alia in liquefiers for nitrogen, hydrogen, argon, methane, etc.</p> |
