| 摘要 |
Personnel protection system and method for operating a personnel protection system The present invention concerns a personnel protection system in form of a refuge chamber comprising at least one main room and a cooling facility provided for cooling 10 the ambient air inside the main room in form of a CO 2 cooling unit (10), in which the CO2 cooling unit (10) is provided with a heat exchanger (28) and a first and second pressure reducer (20, 32), each upstream and downstream respectively of the heat exchanger (28) and/or 15 a heat exchanger (28) with a plurality of alternately or cyclically used cooling coils, as well as a method for operating such a refuge chamber. (Fig. 1) cr, 7=-. cmN cor to rc |
