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Posts Tagged ‘air-conditioning’

ICT Building post-occupancy survey report

Tuesday, June 7th, 2016

The IT Division took occupancy of its new, green building in October 2015. The event was preceded by months of interventions aimed at preparing staff for the change, not only of location, but also of work style and culture. After the dust and the emotions had settled, we ran a post-occupancy survey in April of this year. The raw, aggregate results may be viewed here:

Post-occupancy ICT building survey report (pdf)

There are many interesting conclusions to be made, one of which is that although concerns over personal and storage space were vocally expressed before the move, the vast majority of staff is quite satisfied.

We intend to repeat the survey in future in order to “take the temperature” and track whether the operation of the building, as an integral part of our work system, is improving.

Building a green data centre

Thursday, January 8th, 2009

Here’s an interesting post from Tom Raftery at GreenMonk with practical tips about building an energy-efficient data centre:

One of the low hanging fruit in our DC design was going for cold aisle containment. This simply involves sealing the cold aisle (roof, doors and blanking panels) … this stops air mixing and avoids the warm air from the servers heating the cold air you have just spent a fortune cooling.

….

Source super efficient UPS’ … these UPS’ operate at up to 98.4% efficiency. That is a massive improvement over traditional UPS’ which were typically only around 75% efficient.

….

Typical data centers operate at 19-21C (66.2-69.8F) but in conversations I have had in recent months with HP, Sun, Dell and IBM all have said their equipment will operate no problem in data centers at temperatures of 25C (77F)…

PCs and aircons

Thursday, December 18th, 2008

Many people don’t realize that the average desktop PC wastes nearly half the power it draws from the wall socket. This excess energy is dissipated as heat. The average server wastes 30 to 40 percent of its power.

From an address by Dr. Dileep Bhandarkar, Distinguished Engineer, Microsoft at 2008 CeBIT

The advent of PCs in offices also partially explains the explosion in installations of air-conditioning units in (more…)