Free cooling in the data center
The Green Grid, a non-profit consortium that works to improve data center efficiency, recently published some interesting survey results on the use of ‘natural’ or ‘free’ cooling in data centers (located mostly in the US). The survey found that half of respondents are now using natural cooling to save energy and cost and 25% are considering adopting the technology in the future. A triumph for the natural cooling movement and the environment then? Well not quite, the survey also contained a curious twist: despite the use of natural cooling, the survey conclusion was that there was little difference between the reported Power Usage Effectiveness (PUE) of data centers using natural cooling and those that don’t.
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