Energy savings of 55 per cent have been achieved following replacement of existing cooling plant with new Turbomiser chillers at Colt Technology’s West London data centre facility.

Monitoring of power consumption by the client shows that after the installation of Turbomiser chillers annual power consumption fell by more than half.

The award-winning Turbomiser chiller was developed by UK based companies Klima-Therm and Cool-Therm,, working in collaboration with Italian manufacturer Geoclima. Following the results, Cool-Therm is continuing to support Colt and reports achieving even greater power savings at other sites operated by the company.

The results from the first phase of the project demonstrate the exceptional performance and efficiency of Turbomiser chillers, which run on virtually frictionless magnetic bearings.

In addition to a significant reduction in energy use, Colt has been able to improve reliability and lower maintenance  costs.

Colt Data Centre Services asked Cool-Therm to provide a turnkey package, matching the existing data centre cooling load and maintaining cooling to the centre at all times during the changeover.

After consultation with Colt, Cool-Therm advised that operation of all six chillers together would gain maximum com­pressor efficiency under inverter control, at the same time achieving maxi­mum condenser efficiency due to the utilisation of all heat exchanger sur­faces to reject heat.

The same logic was applied to the chilled water evaporators. Chilled water temperatures into and out of the data centre were increased from 6/12 deg. C under the origi­nal design, to 8/14 deg. C, further improving efficiency. A monitoring system was put in place to measure en­ergy consumption against the previous system.

Guy Ruddock, VP Operations, Colt Data Centres Services, said: “We are working with Cool-Therm to further enhance efficiency in our data centres, which contributes to Colt’s commitment to continual innovation to provide significant environmental and cost benefits for our customers.” He added: “The energy efficiency expertise and experience gained in pursuit of this goal is now being applied across the Colt estate by local teams.”

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