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Leonardo evolves in style


The upturn in demand for Data Centre space, and the increase in heat loads from the deployment of blade servers and other new IT systems, is potentially bad news for the drive to cut carbon emissions.

It is in order to counter this trend that Uniflair has launched the new Leonardo 2 "Evolution" range of precision air conditioning units with a whole series of measures to reduce energy consumption for Data Centre cooling.

Electronic Expansion Valves
First up, all the direct expansion units: air or water cooled, twin cool or free cooling versions, now incorporate electronic expansion valves as standard.

Given the 24/7 year-round cooling operation of this type of equipment, this means that lower refrigerant condensing pressures can be used for much of the year, increasing the system COP (Coefficient of Performance) with a consequent reduction of over 8% in the average annual energy consumption.

E C Fan Motors
Electronically commutated DC fan motors are standard on all Leonardo 2 "Evolution" V-series units. Depending upon the model, this means a reduction of between 35% and 60% in fan motor power consumption compared to standard induction motor drives.

With these units, fan speed adjustment to modify air flow or external static pressure can be simply carried out via the on-board micro processor control.

Free Cooling
E-series versions incorporate glycol cooled condensers and a second cooling coil, interlaced with the main evaporator coil. When the glycol coolant temperature is below the return air temperature to the room unit it is circulated through this second coil to provide partial or total free-cooling, yielding energy savings in excess of 40% in a typical year based on meteorological records for London.

Versatility
As with the previous generation of Leonardo units, all models can be supplied with any airflow configuration: down flow and up flow face-return, floor return or rear return, as well as a comprehensive range of options in terms of air filters, electric, LPHW or hot-gas reheat, humidifiers, LAN and BMS connections, base frames, extension hoods, etc.

Style
While precision air conditioning units are specified or purchased for what they do, rather than what they look like, in the view of the Uniflair design engineers, itís no more difficult or expensive to make them stylish additions to the Data Centre, rather than the same old metal boxes. Thatís easy for them to sayÖ...

Email: allanbaynton@uniflair.co.uk


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