The GEA Adia-DENCO cooling system has been especially designed for HVAC use in data centres.
The system, with its extremely low energy consumption, is based on the proven GEA CAIR range of air handling units.
It exploits the principle of free cooling in combination with adiabatic humidification to effectively reject heat.
On the basis of the very slight number of hours in the year with temperatures above 29°C (in central Europe, for example), power consumption for compressor-based cooling is reduced to an absolute minimum.
With the GEA Adia-DENCO, data centre operators can save up to 70 per cent energy and can accordingly lower their operating expenses.
At outdoor temperatures under 6"C, the indirect free cooling alone of the system is sufficient to completely extract the thermal load produced.
At this operating point, all additional cooling sources (adiabatic sources as well as compression-refrigeration cooling) are switched off.
Depending on the output demand from the computer centre and at outdoor temperatures over 29°C, the adiabatic cooling system is supported by an additional peak-load cooler.
It can, as an option, be designed for 100 per cent cooling duty for purposes of redundancy.
The adiabatic cooling system is based on the simple principle that evaporating water removes heat from its surroundings.
With the GEA Adia-DENCO, cooling takes place energy-efficiently in a large double-plate heat exchanger.
The warm outdoor air is first humidified, which cools it, and is then sent to the recuperator.
This dual recuperator then cools the entering warm return air from the data centre by hermetically sealed heat exchange.
The large surface involved enables highly efficient operation at all operating points, with low pressure drop.
