Schneider Electric Releases White Paper on Capital Cost Comparison of Data Centre Liquid Cooling vs Traditional Air Cooling

LONDON, July 1, 2020 /PRNewswire/ -- Schneider Electric, the leader in digital transformation of energy management and automation, has announced a new White Paper #282, "Capital Cost Analysis of Immersive Liquid-Cooled vs. Air-Cooled Large Data Centres," available for immediate download via the Schneider Electric website. The paper provides a detailed comparison of the capital costs of a 2MW data centre using traditional air-cooling, versus a second utilising racks where each server chassis is partially filled with a dielectric fluid. This new architecture is called chassis-based immersion.

Overall, the cost analysis showed that the capital expenditure (CapEx) of each approach is comparable at similar power densities of 10kW/rack. However, applications utilising greater compaction and higher power densities of up to 40kW per rack, possible only with liquid cooling, resulted in far greater cost savings. At 20kW/rack the space savings result in an overall reduction of 10%, whereas at 40kW/rack the CapEx savings are 14%.

"From an environmental perspective, liquid cooling provides significant sustainability benefits by reducing the water and energy consumption of data centres," said Robert Bunger, Liquid Cooling Program Director, Secure Power Division, Schneider Electric. "Other benefits include increased power densities, reduced footprint and noise pollution, lower capital costs and improved reliability. For customers in the edge computing, telco and Hyperscale spaces, this technology presents real promise. I believe it will continue to exceed our expectations with future developments."

Liquid cooling enables greater savings

Focusing exclusively on capital costs, rather than a total cost of ownership (TCO) comparison, the paper examines how additional investment into the infrastructure for an immersive liquid-cooling deployment are offset by the removal of air-cooling components. This includes chillers, containment systems and computer room air handlers (CRAHs), which represent a considerable cost saving for owners and operators.

By reducing the air-cooling equipment, power components including uninterruptible power supplies (UPS) and switchgear can also be removed, contributing further to the associated space saving.

In late 2019, Schneider Electric announced the data centre industry's first commercially available, integrated rack with immersed, Liquid-Cooled IT, in partnership with Iceotope and Avnet. Chassis-based immersive cooling is an emerging technology, however, the cost savings calculated within Schneider Electric White Paper #282 are representative of a near-term deployment at scale. Additional savings can be expected as future technology and manufacturing efficiencies improve.

Schneider Electric White Paper #282 "Capital Cost Analysis of Immersive Liquid-Cooled vs. Air-Cooled Large Data Centres" is available for download now - click here.

About the Authors.

Robert Bunger is a Program Director within the CTO office at Schneider Electric. He has held management positions in customer service, technical sales, offer management, business development and industry associations. He was previously a commissioned officer in the US Navy Submarine force. He has a BS in Computer Science from the US Naval Academy and MS EE from Rensselaer Polytechnic Institute.

Wendy Torell is a Senior Research Analyst at Schneider Electric's Data Centre Science Centre. She researches best practices in data centre design and operation and develops TradeOff Tools to help clients optimize the availability, efficiency and cost of their data centre environments. She also consults with clients on availability science approaches and design practices to help them meet their data centre performance objectives.

Victor Avelar is the Director and Senior Research Analyst at Schneider Electric's Data Centre Science Centre. He is responsible for data centre design and operations research and consults with clients on risk assessment and design practices to optimize the availability and efficiency of their data centre environments. He holds a bachelor's degree in mechanical engineering from Rensselaer Polytechnic Institute and an MBA from Babson College.

About Schneider Electric

At Schneider Electric, we believe access to energy and digital is a basic human right. We empower all to make the most of their energy and resources, ensuring Life Is On everywhere, for everyone, at every moment. We provide energy and automation digital solutions for efficiency and sustainability. We combine world-leading energy technologies, real-time automation, software and services into integrated solutions for Homes, Buildings, Data Centers, Infrastructure and Industries. We are committed to unleash the infinite possibilities of an open, global, innovative community that is passionate about our Meaningful Purpose, Inclusive and Empowered values.

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