Method for operating a high-pressure electrolysis system, high-pressure electrolysis system and hydrogen filling station comprising a high-pressure electrolysis system

摘要

The invention relates to a method for operating a high-pressure electrolysis system (2), wherein a hydrogen stream (6) and an oxygen stream (8) are produced in a high-pressure electrolyzer (4), and these are passed out of the high-pressure electrolyzer (4) under high pressure. In order to increase the efficiency of the high-pressure electrolysis system (2) with respect to cooling of the hydrogen produced in the high-pressure electrolysis system (2), the oxygen stream (8) is passed into a vortex tube (20) for decompression, in which the pressure energy of the oxygen is converted to refrigeration. This produces a cold oxygen stream (22) which is used to cool the hydrogen stream (6).