| 主权项 |
1. A method for minimizing the risk of fire and extinguishing fires in an enclosed room, comprising:
transferring thermal energy through a rotating heat exchanger system between a warm fluid and a cold fluid said rotating heat exchanger system having a rotatable rotor, flowing the warm fluid through a first sector and flowing the cold fluid through a second sector, maintaining a spatial separation between the first sector and the second sector, rotating the rotatable rotor having ducts parallel to its rotational axis and extending through the spatial separation, the rotor passing through the first and second sectors upon rotation, setting a leakage rate of a gap opening between a front face of the separation and a lateral surface of the rotor to a pre-defined value via a leakage rate setting device having a sealing body with at least one chamber and a pipe system connected to said at least one chamber and supplying the chamber with fluid in a regulated manner, the sealing body at least partially formed of a flexible material having a cross-section expandable in a direction of leakage upon fluid being supplied to the at least one chamber, drawing the warm fluid from the closed room using a first ventilator system, flowing such drawn warm fluid through a first sector of the rotating rotor and thereafter feeding the warm fluid back into the closed room, flowing the cold fluid through a second sector of the rotating rotor via a second ventilator system, introducing an oxygen displacing gas to lower oxygen content in the enclosed room to a predefined combustibly inert level, and expanding a cross-section of the sealing body by supplying fluid to the at least one chamber of the sealing body such that the gap between the front face of the separation and the lateral surface of the rotor is at least partly sealed in a controlled manner. |
