Client: 4D Data Centres in Surrey
Types of works: completed a 500kW EcoCooling CREC cooling scheme for their data centre.
This project followed a successful evaluation of the EcoCooling low energy cooling system in an existing UPS area. The project objectives reflect 4Ds strategy to work towards a PUE of 1.1 to both improve efficiency and release power. An added benefit is an improvement in air flow which provides better conditions for IT equipment.
Poor air distribution is a common problem in traditional data centres using raised access floors. To achieve ideal conditions 17 EcoCooling CRECS (computer room evaporative coolers) were used to provide over 50 cubic meters of air per second to the cold aisle of the data centre. Extraction is provided by 7 energy efficient Electrically Commutated (EC) Axial extraction fans. Initial results show the cooling system and extraction fans only add 0.05 to the PUE.
A control system designed and manufactured by EcoCooling using Schneider Crouzet PLC controls the coolers, ventilation fans and dampers to provide ASHRAE standard compliant temperature conditions in the data centre. Key data and fault reporting is communicated through the internal network. It is also fully integrated into the fire system.
Since the ambient temperature is so low most of the time in the UK, it is possible at no extra cost to run the data centre at a set temperature of 18.5C. This allows a more comfortable environment for operators and also reduces temperature related failures. The cold temperatures which can cause non-compliant conditions are prevented using a patented attemperation system which allows the cool air to be mixed back in with warm air from the servers to provide air at the correct temperature.
The data centre has now made the first steps in the path towards achieving a PUE of under 1.1 and has reduced its cooling power consumption by over 90%.