Inerting method for preventing and/or extinguishing fire as well as inerting system to realize the method

摘要

The invention relates to an inerting method as well as an inerting system (1) to set and/or maintain a reduced oxygen content in an enclosed room (2), wherein a gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3) is provided which separates off at least a portion of the oxygen from an initial gas mixture provided in a mixing chamber (6) and by so doing, provides a nitrogen-enriched gas mixture. In order to optimize the operation of the inerting system (1), the invention provides for a portion of the air to be withdrawn from the enclosed room (2) and admixed with fresh air in the mixing chamber (6).

主权项

1. An inerting system (1) to set and/or maintain a predefinable oxygen content in the spatial atmosphere of an enclosed room (2) which is reduced compared to the normal ambient air, the inerting system comprising:
a gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3) which separates off at least a portion of the oxygen from an initial gas mixture containing nitrogen and oxygen and by so doing, provides a nitrogen-enriched gas mixture at an outlet (4a.1; 4a.2; 4a.3) of the gas separation system (3.1, 4.1; 3.2, 4.2; 3.3, 4.3); a supply line system (7) for supplying the nitrogen-enriched gas mixture to the enclosed room (2); a mixing chamber (6) configured as a mixing tube configured to provide the initial gas mixture; a first line system (9) through which a portion of spatial air contained in the enclosed room (2) is withdrawn and fed to said mixing chamber (6), the first line system (9) opening into the mixing chamber (6); a second line system (8) through which fresh air is supplied to the mixing chamber (6), the second line system (8) opening into said mixing chamber (6); a control unit (5); a first fan mechanism (11) in the first line system (9) and controllable via the control unit (5); and a second fan mechanism (10) in the second line system (8) and controllable via the control unit (5).