Abstract: The present invention relates to a computer room which is surrounded by a lower floor, at least one side wall and a roof, with an air-permeating load-bearing floor disposed above the lower floor, on which, in use, computer equipment is disposed. A separation arrangement provides for the separation from each other of a riser channel for hot air above the computer equipment on the one hand and a return channel for air being carried back from the top of the computer room to the space under the load-bearing floor on the other hand. The surface area of the return channel of a cross-section of the computer room amounts to at least 5% of the surface area of the riser channel of the same cross-section.

Abstract: The present invention, according to a first aspect thereof, relates to a computer room (1) which is surrounded by a lower floor (3), at least one side wall (2) and a roof (4), further comprising a climate control device and an air-permeating load-bearing floor (6) disposed above the lower floor, on which, in use, computer equipment is disposed. Separation means (12) are provided for the separation from each other of a riser channel for hot air above the computer equipment on the one hand and a return channel for air being carried back from the top of the computer room to the space under the load-bearing floor on the other hand. The surface area of the return channel of a cross-section of the computer room amounts to at least 5% of the surface area of the riser channel of the same cross-section.