Publishing Date: Jul 20, 2021

Datacentres for better security

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STULZ helps data centres beat the heat with its CyberCool Free Cooling Booster

STULZ the global mission critical air conditioning specialist including STULZ UK, has announced the worldwide availability of its CyberCool Free Cooling Booster – an innovative free cooling module that enables data centres, as well as industrial applications, to benefit from environmentally friendly cooling. This latest addition to the pioneering CyberCool range means that water-cooled chillers can now be supplemented with modern free cooling functionality without any major planning or installation effort.


Free cooling is firmly established as one of the most highly effective ways to reduce energy consumed by chillers, or the time that they run for, by using the outside temperature of air or water. The CyberCool Free Cooling Booster offers a flexible high performance cooling solution that enables the significant savings potential of free cooling to be fully exploited in both new and exisiting systems. This not only maximises operational reliability and enhances equipment lifespan, but also reduces CO2 emissions.

Water-cooled chillers that previously did not meet the technical requirements for using free cooling can now be retrofitted with the CyberCool Free Cooling Booster, which is fully integrated into the hydraulic system. The plug and play facility with a high level of prefabrication, means it can be used with most conventional chilled water systems without additional high costs. In order to provide the most flexible and controllable solution possible it offers factory tested hydraulics, coordinated cooling components and intelligent control, while high quality part load capable components with redundancy, and a mode of operation with or without glycol, are options.

Available in five sizes with cooling capacities between 270kW and 1800kW, the CyberCool Free Cooling Booster ensures optimum control and flawless communication. The integrated control cabinet solution uses patented free cooling control software, based on controllers from STULZ, which feature an integrated Ethernet interface and a micro-SD port for firmware upgrades and data management. This intelligent controller monitors both the outside and the operating temperatures, and regulates the cooling capacity according to current demand.

The CyberCool Free Cooling Booster supports three operating modes – free cooling, mixed mode and mechanical cooling. Depending on the outside temperature, the system automatically selects the most appropriate mode to ensure efficient operation. As a result, it ensures the most effective free cooling capability and condensation temperature control – even with higher outside temperatures.

When combined with the STULZ Explorer WSW and CyberCool WaterTec chillers, the CyberCool Free Cooling Booster forms a coordinated and energy efficient air conditioning system with industry leading functionality and performance.

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Since its foundation in 1947, the STULZ company has evolved into one of the world’s leading solution providers of energy efficient temperature and humidity management technology, specifically for mission critical applications. With the manufacture of precision air conditioning units and chillers, the sale of air conditioning and humidifying systems, as well as the service plus the facility management, this division of the STULZ Group achieved a turnover of around 570 million euros in 2020.

Since 1974 the Group has seen continual international expansion of its air conditioning business, specializing in air conditioning for data centres and telecommunication installations. STULZ employs 2,700 workers at 11 production sites and 21 sales companies in America, Africa, Asia, Europe and Oceania . In addition, the company cooperates with sales and service partners in over 140 countries, giving it an international network of air-conditioning specialists. The STULZ Group employs around 7,000 people worldwide. Current annual sales are around 1,300 million euros.

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