Abstract: The invention relates to a system and method that comprises at least two parallel apparatus racks and at least two cooling units. The cooling units are configured to produce horizontal cooled airflows toward outer sides of the at least two apparatus rack. The cooling units comprise an upper side inlet for airflow to be cooled. The system and method achieve a more effective cooling of apparatus racks.

Abstract: A cooling system for cooling electronic/computer equipment in an equipment room in a station. A fan device causes heat exchanging air circulation between a battery and the equipment, where the air is guided by an air guiding device. The air guiding device is in a first chamber with an inlet which communicates with a battery and a second chamber with an outlet which communicates with the equipment. The first and second chambers are separated by a low impulse device preferably in the form of a perforated partition wall equipped with filter cloth. Turbulent flow which leaves the fan changes the laminar flow when the flow is towards the equipment so that warm surrounding air is not mixed in the air flow.