Behind Castrol’s Liquid Cooling Innovation in Data Centres
The demand for high-performance computing is pushing data centre infrastructure to its structural limits. Traditional air cooling methods are increasingly falling short when faced with the concentrated heat produced by the latest generation of processors.
Facility operators must manage unprecedented thermal loads as rack densities climb to accommodate advanced workloads. Effective heat rejection is a core operational necessity to maintain performance, reduce energy consumption and prevent equipment failure.
Expanding the thermal fluid portfolio
Castrol is actively expanding its product offerings to meet these escalating industry demands. The business has developed a specific focus on thermal fluids designed to manage the intense heat generated by modern IT hardware.
Francesco Cassanello, Global Product Marketing Manager Thermal Fluids at Castrol, explains the company’s focus is on "launching products – the thermal fluids – which help our customers to achieve their targets, their density targets, in their data centres”.
The strategy involves a phased rollout of targeted cooling solutions. Operators require different approaches depending on their legacy infrastructure, physical space constraints and future upgrade paths.
"We launched first the immersion cooling fluids, then we launched the direct-to-chip liquid cooling and then more recently we launched the primary cooling fluid," Francesco says.
He adds that the company remains focused on continuous development to support operators integrating high-density infrastructure: “The job is not yet done – there is more to come, more products in the pipeline – because we would like to stay close to our customers in their liquid cooling journey. We would like to give them the opportunity to run this journey, to go alongside them in the AI journey with our products."
Prioritising trust and reliability
Developing effective cooling fluids requires strict attention to material compatibility, lifespan and performance under sustained thermal stress. For facility operators, implementing new liquid cooling infrastructure represents a significant capital expenditure and a major operational shift. Any fluid introduced into the white space must perform exactly as expected without risking hardware damage, environmental hazards or unplanned downtime.
Francesco emphasises that product development goes beyond simply formulating a chemical solution. It requires building confidence through rigorous evaluation.
"The key words are trust and reliability,” he explains. “It's not a matter of launching a product itself – it's a matter of testing the thermal fluids upfront, prior to launch, in order to gather data about how the fluid behaves."
This comprehensive testing protocol is designed to eliminate uncertainty for data centre managers. By understanding the long-term behaviour of their solutions under varying conditions, the technical team can anticipate potential challenges before deployment.
Francesco continues: "We test our products thoroughly in order to understand how the fluid behaves, to get predictability and trust, to be proactive in understanding any kind of issue – if any – and to be ready to deal with any question coming from our customers in advance."
Ultimately, the goal is to provide operators with peace of mind when upgrading their cooling infrastructure. As Francesco states, the main objective is to deliver "the assurance and the trust to the customer that the commissioning and the operation will go smoothly”.