By Eamonn Ryan
As the digital economy continues to expand, the immense heat generated by information technology (IT) infrastructure has become one of the defining engineering challenges of our time.
The data centre boom – fueled by AI, cloud services and global digitisation – means the cooling challenge will only grow more intense. Rawpixel | Freepik.com
Without effective cooling, servers and processors would overheat, causing costly downtime, equipment damage, or even data loss.
A new white paper, The Hidden Energy Drain, published by HVACInformed.com in collaboration with Ziehl-Abegg, highlights just how central cooling – and specifically fans – are the future of data centres.
AI is turning up the heat
Data centres already demand enormous energy resources, but the rapid rise of artificial intelligence (AI) is intensifying the pressure. Unlike traditional IT systems, AI workloads run on specialised hardware with a much higher power density, which in turn generates significantly more heat.
“The scale of the data centre business is amazing,” notes Brooke Zalud, market segment manager for IT and telecommunication at Ziehl-Abegg. “It’s really a powerhouse industry that is exploding. Fans will always be needed to remove heat from data centres.”
According to the report, the expansion of AI and the digitisation of the global economy means that cooling systems must not only grow in capacity but also evolve to become far more energy efficient.
The unsung heroes of data centre cooling
Cooling in a data centre can happen at multiple levels – from fans mounted directly on a server rack, to larger fans designed to ventilate entire rooms or buildings. In every case, their role is the same: moving air efficiently, dissipating heat and maintaining reliability.
As the white paper explains: “The strategic deployment and intelligent control of cooling fans ensure the efficient and reliable operation of today’s data centres.”
The reliability of these systems is non-negotiable. Servers, processors and memory systems cannot be allowed to overheat at any point, making fans essential not only for protecting equipment but also for ensuring uptime, extending hardware life and lowering overall energy consumption.
Enter the EC fan
One of the most promising solutions lies in electronically commutated (EC) fan technology. EC fans, like those manufactured by Ziehl-Abegg, combine energy efficiency with precision control.
The white paper highlights several advantages:
- Energy efficiency: EC fans consume less power while maintaining high airflow performance
- Smart monitoring: Built-in sensors track temperature, vibration, kilowatt usage, and amperage draw, all accessible via Ziehl-Abegg’s free ZAset management system
- Integrated electronics: A variable frequency drive (VFD) is built directly into the motor, eliminating the need for external VFDs and simplifying system design
- Long service life and easy maintenance: Durability ensures that cooling systems remain dependable even under continuous 24/7 operation
These innovations are particularly important at a time when sustainability is becoming a business imperative. With cooling systems often accounting for a large portion of a data centre’s energy bill, every efficiency gain has a direct impact on operating costs and carbon footprint.
Applications across the cooling chain
Ziehl-Abegg fans are used at every level of the cooling hierarchy. For instance, smaller centrifugal fans such as the ZApilot can be integrated into rack-level cooling, where they support rear-door heat exchangers connected to liquid cooling systems. By pulling hot air across servers and transferring that heat into a liquid medium, these systems ensure highly localised and efficient cooling.
At a larger scale, EC fans manage airflow across rows of racks or entire rooms, intelligently directing cool air where it’s most needed while removing hot air efficiently. This flexibility makes them a cornerstone of modern cooling strategies.
The future of cooling
As The Hidden Energy Drain makes clear, the data centre boom – fueled by AI, cloud services and global digitisation – means the cooling challenge will only grow more intense. But with innovations like EC fans and intelligent monitoring, the industry has powerful tools at its disposal.
In short, the humble fan has never been more critical. By ensuring efficiency, reliability and sustainability, fans are not just moving air – they’re powering the digital future.
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