Intelligent Data Centres Issue 3 - Page 55

consume 1kw of energy for every 3–4kw of cooling delivered. Compare this to an equivalent sized adiabatic solution, which for the same 1kw of energy consumed, will deliver up to 75kw of cooling. In terms of EER, this difference translates as an approximate EER of 4 (4kwth/1kwe) for a conventional compressor solution, and an impressive EER of around 75 (75kwh/1kwe) for the equivalent ambient solution. This of course, translates to substantial energy and cost savings for energy-hungry mission critical environments. Can legacy data centres still benefit from ambient cooling? Older data centres which house older style servers will still rely on compressor or refrigeration chillers to dissipate enough heat from the data centre and maintain an AS WE MOVE TOWARDS A FUTURE EVEN MORE RELIANT ON THE STORAGE AND EXCHANGE OF DATA, THE REST OF THE INDUSTRY IS EXPECTED TO FOLLOW SUIT. internal building environment which meets the operational temperature thresholds of dated server technology. That said, given that most leading ambient coolers are installed externally, retrofitting additional cooling technology to supplement an existing compressor solution is a highly viable option for many older data centres looking to maximise geographical assets and weather patterns to deliver free cooling during certain seasons. If an older data centre retains its legacy infrastructure but is refitted with state- of-the art servers which can operate at higher temperatures, adiabatic cooling equipment can be retrofitted to the same inlets as older equipment. As the data centre industry evolves and grows at a rapid pace, energy conservation focused industry leaders like Facebook have already maximised ambient and free cooling technologies within their data centres. As we move towards a future even more reliant on the storage and exchange of data, the rest of the industry is expected to follow suit. ◊ Adiabatic V Cooler – A Transtherm adiabatic V cooler i Issue 03 55