http://www.environmentalleader.com/2009/08/05/ll-bean-emerson-data-centers-use-natural-light-to-reduce-power-use/ Environmental Leader Fri, 25 May 2012 22:05:52 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.environmentalleader.com/2009/08/05/ll-bean-emerson-data-centers-use-natural-light-to-reduce-power-use/comment-page-1/#comment-140079 Ian Bitterlin Wed, 05 Aug 2009 16:19:23 +0000 http://www.environmentalleader.com/?p=19269#comment-140079 Admirable effort but, when put into context, more of a risk than an advantage. High density data-room lighting in a medium density load data-room represents less than 0.7% of the power consumption. Most data-rooms here in Europe have the lights on motion detectors and they are, therefore 0W for >20 hours/day. The alternative of using daylight increases the security risk form windows and, very probably, means using light-tubes penetrating the ceiling - which is a point of potential water leakage. When its dark you still have to have lights so just turning the lights off seems to be the best strategy? Admirable effort but, when put into context, more of a risk than an advantage. High density data-room lighting in a medium density load data-room represents less than 0.7% of the power consumption. Most data-rooms here in Europe have the lights on motion detectors and they are, therefore 0W for >20 hours/day. The alternative of using daylight increases the security risk form windows and, very probably, means using light-tubes penetrating the ceiling – which is a point of potential water leakage. When its dark you still have to have lights so just turning the lights off seems to be the best strategy?

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