Half of data centre power 'used for cooling'
17 Nov 2008
Inefficient cooling systems and designs are a key reason why data centres use up large amounts of energy, while implementing environmentally-friendly practices could save enterprises up to one million kilowatt hours a year, it has been reported.
According to Computer Weekly, Gartner has outlined steps that firms could take to cut the 50 per cent of electricity used for cooling down to 15 per cent, while the unconstrained mixing of hot exhaust air and cold supply air is a central reason for such waste.
"This mixing increases the load on the cooling system and energy used to provide that cooling and reduces the efficiency of the cooling system by reducing the delta-T. A high delta-T is a principle in cooling," Paul McGuckin, an analyst at Gartner, tells the IT resource.
One of the green steps a company could take is to install variable speed pumps and fans, because a ten per cent reduction in fan speed can result in a 27 per cent drop in electrical use.
It had been previously reported by the McKinsey Quarterly that if technology was made greener, 7.8 metric gigatons of greenhouse gas emissions could be eliminated annually by 2020.
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