Heat from server rooms is a killer. It gets in your return system and adds load to your air handler latent and sensible heat loads. How well you handle your hot exhaust air from your equipment is quite a concern and usually depends on the design of the equipment.
Today’s sensitive data equipment may have thousands of hot air flow paths, which represent the total waste heat output that must be cooled or removed. Total wattage of a server room could be as high as 3 tons of air conditioning load. Multiplied by 10 tenants and know you load is 30 tons x amount floors could equal a small chiller alone. So do you cool the room or the equipment? The traditional way was to exhaust the air and cool the room. The problem with this approach was room based cooling provide inadequate airflow across the equipment.
Newer cooling systems designs shorten the distance between heat sources and heat removal systems to ensure a more predictable cooling method. In rack orientated architectures, the air conditioning units are directly mounted or housed within the IT racks. The resulting air flow paths are short and defined and immune to room constraints for installing. Manufactures such as APC, and their InfraStruXure InRowRC and SC cooling units coupled with RackAirContainment and Hot Aisle Containment Systems eliminate hot spots and neutralize hot air by preventing recirculation into sensitive IT equipment. Check it out at www.InfraStruXure.com
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