Abstract: A method and device for preventing fire and for extinguishing fire in an enclosed space in which a permanent negative pressure is set, includes fresh air being supplied in a regulated manner to the compartment atmosphere as supply air and exhaust air being discharged from the compartment atmosphere in a regulated manner, and wherein should a fire occur or to prevent a fire, an extinguishing agent which is gaseous under normal conditions is supplied to the compartment atmosphere as the supply air. In order to achieve a relieving of pressure without changing the set negative pressure, or upon a sudden flooding of the space with the gaseous extinguishing agent, the total volume flow of fresh air and/or extinguishing agent supplied to the compartment atmosphere as supply air is at all times less than or equal to the volume flow of the exhaust air discharged from the compartment atmosphere.

Abstract: The present invention relates to an inerting method for reducing a risk of fire outbreak in an enclosed space as well as a device therefor. A continuous inerting of the enclosed space to spatially-separated zones of the enclosed space is performed as necessary without needing structural separations. At least one inert gas having a gas density (?Gas) which differs from the mean gas density (?Gas) of the ambient atmosphere of the space is introduced into the enclosed space such that a gas stratification including a first gas layer (A) and a second gas layer (B) forms in the enclosed space, wherein the oxygen content in the first gas layer (A) corresponds substantially to the oxygen content of the ambient atmosphere, and wherein the oxygen content in the second gas layer (B) corresponds to a specific, definable oxygen content which is lower than the oxygen content of the ambient atmosphere.

Abstract: The invention relates to a preventing and extinguishing fires in enclosed spaces in which the internal air atmosphere is not permitted to exceed a predefined temperature value. In order not to have to increase the cooling capacity of an air conditioning system when inert gas is added to the internal air atmosphere to set or maintain a specific inertization level within an enclosed space, a system for the regulated discharging of inert gas into same is provided. The system includes a container for the provision and storage of the inert gas in liquified form, and a vaporizer connected to the container for vaporizing at least a portion of the inert gas and discharging same into the internal air atmosphere of the enclosed space. The vaporizer thereby directly or indirectly extracts the heat energy needed to vaporize the liquid inert gas from the internal air atmosphere of the enclosed space.

Abstract: An inertization method for preventing fire or explosion in a first enclosed protected area by lowering the oxygen content in the protected area to a base inertization level relative—to the ambient air. With the objective of eliminating any danger to people or processes within the protected area, the method according to the invention provides for measuring the oxygen content in the protected area, comparing it to a threshold (maximum inertization level), and in the event it falls below the threshold (maximum inertization level), introducing fresh air into the protected area(s).

Abstract: A method and apparatus for the controlled feeding of added air into a permanently inertized room in which a predefined inertization level is or must be set and maintained within a certain control range provide for the volume flow rate at which an inert gas is fed into the room atmosphere to attain a value that is adequate for maintaining the predefined inertization level in the room atmosphere that will minimize fire risk. In addition, provisions are made whereby at all times just enough fresh air is injected into the room atmosphere as is necessary to remove from the room atmosphere that proportional concentration of hazardous substances that has not already been removed, via a corresponding return-air exhaust system as a result of the injection of inert gas.

Abstract: This invention relates to a method by means of which it is possible, with highest possible precision and without any major expense, to determine the air tightness of an enclosed space, such space being particularly well suited to the use of the inert-gas fire extinguishing technology described above. Specifically, it introduces a method which, on demand and in effective yet easy-to-implement fashion, permits at any time the updated determination of the existing air tightness of the enclosed space without requiring a complex test series. To that effect, the first step according to the invention is to define a concentration gradient between the internal air atmosphere of an enclosed space and the ambient air atmosphere by setting the physical concentration of at least one constituent component of the space-internal air atmosphere, in particular of oxygen, at a value that differs from the physical concentration value of that minimum of one corresponding component in the ambient air atmosphere.

Abstract: An apparatus for fire detection in an electrical equipment rack includes a suction pipe system which communicates with the rack monitored through at least one suction opening and through which a representative air sample is drawn from the rack, an early fire detection module having at least one detector unit for detecting at least one fire parameter in the air sample extracted through the suction pipe system, and a controller for issuing an early fire detection signal in response to the result detected with the at least one detector unit. The early fire detection module is configured as a rackmount to be inserted into the rack.

Abstract: What is disclosed is a device for extinguishing fires, and utilization of the device for stationary protection of specific objects, and for dust abatement during blasting operations, and a method for extinguishing forest or terrain fires with the extinguishing device. The extinguishing device comprises a container for receiving an extinguishing agent, and an explosive in or on this container, by means of detonation of which the extinguishing agent is atomized to form a mist and brought into the fire. In order to increase the flexibility and effectiveness in practical use, the container consists of a flexible hose which may be closed at both ends. The method of extinguishing forest or terrain fires with this device provides for the hose to be laid out in front of the fire front, filled with the extinguishing agent, and exploded by detonation of the explosive.