Abstract: Mobile data center (10) comprising a plurality of computing modules (38, 40) to be air-cooled, a container (12) with an inner chamber for housing the plurality of computing modules, said container having four outer side walls, a bottom wall and a top wall, a plurality of air inlets (30, 32) to the inner chamber, at least two fans (34, 36) arranged for creating an air pressure gradient inside said inner chamber, and piping (52) arranged for guiding air through the inlets to the computing modules to be air-cooled when said air pressure gradient is created.