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Cannon Technologies’ managing director, Matthew Goulding, explains, ‘A passive system uses the server / IT and air handler fans to provide air movement through the Cocooning Chimney. This creates a sealed environment for the air to travel through, ensuring that cool air does not mix with heated exhaust air. Alternatively, an active system involves the use of fan trays to provide forced airflow up through the chimney. Cannon Technologies’ automatic, variable speed temperature controlled fan trays boast an adjustable telescopic design for indeterminate installation heights or single piece construction.’
Cannon Technologies has used its vast experience in chimney design and configuration within the Cocooning Chimneys, and to eliminate the common problems associated with free cooling – polluted air, pollen, insects and humidity – it has designed them to be used alongside airside economisers. Perfect for retrofitting, they bring ambient air in, filter it and then mix it with exhaust air to raise the temperature if required. The air is then passed either through an air-to-air heat exchanger, or direct and through a back-up water or DX air coil, in order to get the right temperature for the room.
To assess their effectiveness, Intel looked at the impact of airside economisers where the outside air temperature was 90°F (32°C). It estimated that a 10MW facility would save almost $3m per year and that the risk of increased equipment failure was so low as to be insignificant.
As well as offering brush sealed cable containment solutions that pass through the Cocooning Chimneys and out to cable raceways and basket, Cannon Technologies can also provide aisle roof designs and custom chimneys to suit various ductwork requirements. This is backed up with a service that includes site surveys, bespoke system design, heat extraction calculation, fast and efficient manufacture, installation and testing.
‘The popularity of free air cooling is not surprising given that it can help deliver a power usage effectiveness (PUE) rating as low as 1.05, against an industry average of 2.0,’ concluded Matthew Goulding. ‘Our pioneering new Cocooning Chimneys can play a vital role in reducing the cost of cooling, making data centres more energy efficient and getting the most out of ambient temperatures.’
