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CPD equipped with RETO racks belonging to a medium-sized company in the German city of Emmendorf (Niedersachsen) which were equipped in turn with accessories for racks and RETEX CPD. In this CPD the air flow comes from the technical floor and is directed through the vents in the back of the cabinets towards the room, where it is recirculated with CRAH. The shape and size of the ventilation ducts as well as the direction and flow rate of the cooling vents of the technical floor directly influence the actual amount of cold air
delivery to the most critical areas of each rack. It is therefore necessary in each case to carefully determine the placement, direction and air flow in relation to the higher power cabinets.