The Airbitat DC Cooling System can achieve over 20% in energy savings for tropical data centre cooling, with payback in less than three years
Singapore, 13 July 2022 - ST Engineering today announced the launch of its new Airbitat DC Cooling System, marking its entry into the data centre cooling market. An innovation by its Urban Environment Solutions (UES) business, the Airbitat DC Cooling System delivers powerful pre-cooling for tropical data centres, achieving annual net energy savings of more than 20 per cent over conventional chiller systems alone. This translates to annual energy savings of about $104 per kW of heat load.
Combined with existing chiller systems, the Airbitat DC Cooling System enables data centres to reach a targeted Power Usage Effectiveness (PUE) of below 1.3, which is supported by UES’ live system data and backed by eight years of engineering, R&D and its patented evaporative cooling technology. This performance represents a significant improvement over current regulatory requirements for data centres in Singapore and positions it to meet more stringent standards for future data centre builds.
“Through re-engineering our established Airbitat solution for the data centre environment, we have successfully developed a sustainable solution that significantly cuts energy consumption while reducing carbon intensity and Urban Heat Island Effect. Its ability to be readily deployed in existing data centres presents an attractive option for operators who are looking for cost-effective solutions to lower energy consumption and achieve their sustainability targets,” said Gareth Tang, Head of Urban Environment Solutions at ST Engineering.
“With the exponential growth in compute-intensive applications and increasing data needs, the data centre industry is fast reaching its sustainability tipping point. We believe that the Airbitat DC Cooling System can help the industry address its most critical challenge today and support its growth in a more sustainable manner.”
Enabling Greener Data Centres
Backed by extensive R&D, the Airbitat DC Cooling System comprises a Dual Coil Computer Room Air Handler (CRAH) and a Deep Cooling Unit that’s powered by the patented Reevac® Deep Cooling technology. The Airbitat DC Cooling System works by pre-cooling the hot return air in the data hall to reduce over 40 per cent of the heat load from the existing chiller system. This significantly reduces the overall energy requirements for cooling by more than 20 per cent. Additionally, the Airbitat DC Cooling System does not generate waste heat into the environment as it does not use energy-intensive compressors, nor refrigerants. It also has lower water consumption requirements compared to conventional water-cooled chiller systems.
The Airbitat DC Cooling System can operate under varied climate conditions ranging from hot and humid, to hot and dry environments. Its smart controls detect ambient psychrometric conditions and automatically adjust its cooling modes in real-time for consistent energy-efficient cooling. Additionally, its modular design and ability to scale on demand accommodate different data centre cooling requirements as well as structural and layout constraints, allowing for easy integration in both brownfield and greenfield developments.
The International Energy Agency estimates that the data centre industry currently uses around one per cent of the world’s electricity which could reach double digits by 2030. In Singapore, data centres accounted for seven per cent of Singapore’s electricity requirements in 2020. Over 40 per cent of a data centre’s energy needs is used for cooling, and data centres commonly utilise conventional water-cooled chiller systems which not only have high energy and water consumption requirements but also release waste heat into the environment. With demand for data centre services set to heighten against the backdrop of climate change, more efficient and effective cooling technologies will be critical to ensure the sustainable growth of the industry.
Annex A: Factsheet - How the Airbitat DC Cooling System Works
 Based on electricity tariff rate of $0.299/kwh.
 PUE is a measure of a data centre’s efficiency. It refers to the ratio of total amount of energy used by a data centre, to the energy used to operate the computing equipment in the data centre. A lower PUE value represents higher efficiency.
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