Immersed Computing®: Energy efficiency on a global scale
Asperitas
Category
Data Centre Energy Efficiency Innovation of the year
Entry Description
With Immersed Computing® you fully immerse servers into a dielectric liquid to cool very efficiently making use of a unique concept, natural convection, meaning you do not need any other installations to run a datacentre besides three connections: water supply, power and data connectivity. This is what makes Asperitas different from the competition and what makes it a novel innovation. The cassettes within the module house the IT, and the cassettes are simply placed in, or “bathed” for them to remain cool. The liquid itself (a dielectric fluid) is a synthetic single-phase oil, made from gas using Shell’s GTL technology, which is designed to ensure the highest possible optimisation for the IT. Our trusted partnership with Shell also sets us apart from the rest. The fluid is single-phase, which means little to no evaporation (meaning you are not required to “top-up”) Thermal shock is also greatly reduced due to the high heat capacity of liquid. Because no oxygen gets to the IT, this reduces the need for maintenance on the parts by up to 15%. Compared to an average air cooled datacentre, the AIC24 module can facilitate 5-10 times as much density.

Asperitas‘ mission is to enable sustainable and high performing datacentres that facilitate all emerging digital technologies, anywhere and on any scale. The innovation breaks from conventional ideas, with Asperitas looking to live and work for reshaping and innovating the datacentre world and the company believes in thinking differently, with responsibility towards the future energy footprint and therefore contributing to a better world. The innovation goes beyond marginal improvements on something that already exists as up to 2 million households in The Netherlands could be provided with residual heat generated by datacentres when the Asperitas module is deployed at large scale. The design is perfect for warm water cooling, allowing for climate-independent operation.

One common challenge for the industry has been to facilitate energy efficient and sustainable datacentres in hot climates. Even with traditional immersion cooling solutions this is a challenge. Asperitas has addressed this by developing a solution that is different in a very specific core technology aspect, the way in which the immersion cooling fluid is circulated within, without pumps or other forced circulation. In practice, this means warm water-cooling ability and even free cooling with ambient temperatures of 48 degrees Celsius.

A good example of a customer benefitting from the innovation was in November 2020, whereby Asperitas won the deal for immersion cooling for the French bank, Crédit Agricole Tier 4 datacentres. We were chosen to support the datacentre scale up of the Chartres site for them. The project enables the bank’s datacentres to significantly reduce their energy costs and environmental footprint while preparing for a near future with more compute driven applications and where high-density solutions are required.

In 2018, a pilot project with Asperitas Immersed Computing® was installed for Credit Agricole, during which the technology was validated and met all their Tier 4 datacentre and enterprise standards, therefore being qualified to adopt at their core datacentres. The pilot project of the Asperitas solution at the Greenfield datacentre, the largest within Crédit Agricole, managed more than 40% of the bank workload in Chartres. The module was exposed to numerous weather fluctuations and performed exceptionally, demonstrated by the energy efficiency indicator PUE improving from 1.4 to 1.03 in the winter and 1.04 during a heat wave. Based on this success, the next step of the project is to now install multiple Asperitas modules in two datacentres, taking up a potential 150 square meters of floor space, versus the 6000 square meters of white space currently.
Supporting Documents