ITE Projects are specialists in the design and installation of critical close control air conditioning for data centre environments. We have extensive experience of chilled water, glycol free cool, direct expansion and more recently, air cooled systems.
The design of the air conditioning system is critical to the efficiency and reliability of the site as the power requirements for air conditioning alone can be up to a third of the overall power consumption.
Increasing attention has to be paid to the efficiency of any data centre cooling system, with local authorities in particular requesting an energy conservation report to be submitted as part of any planning process. It is therefore imperative that the design optimises efficiency while still supplying the required cooling loads.
Various measures can be taken, including :-
Making use of outside air for cooling when the ambient temperature does not exceed a set level. This saves on running costly air conditioning equipment.
Items of equipment more tolerant of running in higher ambient temperatures may be segregated and supplied with vented non air conditioned air, making further savings.
Correct setting out of computer racking into a hot and cold aisle configuration will ensure a direct hot air path back to the air handling equipment.
Chilled water systems can be used throughout larger data centres and computer rooms, when conditions allow they may be run in a compressorless free cool mode.
Chilled water systems utalise a single piperoute run throughout the facility to serve all data centre air handling units. This introduces a single point of failure within the facility which can be mitigated by using a tier 4 system.
Alternatively, a D.X. system uses separate pipework for each individual air conditioning unit meaning a pipe failure to one unit will not stop other units from working. ITE Projects usually work to a n+1 system for D.X. cooling enabling an AHU to be shut down for maintenance without adversely affecting the room temperature.