Dave Wolfenden, Heat Load: From Wang Computers to 120MW - Three Decades of Data Centre Testing Evolution
What happens when you've been testing data centres since before "data centre" was even a term? In this episode, Dave Wolfenden of Heat Load joins Robert to trace an extraordinary journey from COBOL programming at Heathrow Airport to becoming one of the UK's pioneering data centre commissioning specialists. Starting with Argos heaters and 500kW of rack-mounted units delivered in transit vans, Heat Load has evolved to deploy up to 120MW of testing equipment across 10 articulated lorries. Dave shares candid insights from over three decades in the industry - from the early days of chaotic rack layouts and liquid CO2 cooling experiments to today's hyperscale pressure cooker where data halls are worth £1M per megawatt per day in lost revenue. Together, they explore: How testing has evolved from basic USB sensors to real-time 3D modelling with wireless monitoring The logistics nightmare of juggling equipment across Europe while customers demand instant deployment Why immersion cooling adoption is slower than expected (and why Heat Load is ready anyway) The shift from owner-operators to hyperscalers - and what that means for the industry If you want to understand how data centre commissioning really works - from the sharp end of delivery deadlines to the evolution of an entire industry - this conversation delivers the unvarnished truth from someone who's been there since day one.
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Maarten Trautmann, Oleon: Plant-Based Fluids, Energy Reuse & the Liquid Cooling Opportunity Europe’s Missing
What if we could decarbonise IT… by rethinking the liquid? In this episode, Maarten Trautmann of Oleon joins Robert to unpack why plant-based dielectric fluids aren’t just a greener alternative - they may be the key to unlocking waterless, sustainable cooling at the edge, at scale, and across Europe. From his early fascination with Ireland to leading Oleon's charge into liquid cooling, Maarten shares how Oleon's biodegradable, non-toxic fluids are offering a credible path to closed-loop cooling, heat reuse, and decarbonisation - without compromising performance. Together, they dive into: The surprising history of Oleon (yes, it started with candles) Why Europe is missing the mark on incentivising heat reuse How immersion cooling adoption is being throttled by warranty fears and retrofitting costs Why innovation in cooling is still in full swing - and where consolidation might come next If you're interested in liquid cooling beyond just AI hype, this one’s for you. 🔗 Connect with Maarten: linkedin.com/in/maarten-trautmann-2997a71a 🔗 Connect with Robert: linkedin.com/in/robertussher
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Dr. Richard Bonner, CTO at Accelsius: The Two-Phase Cooling Revolution for AI-Driven Data Centers
Two-phase cooling isn’t new - but it’s never been more needed. In this episode, Dr. Richard Bonner of Accelsius joins Robert to unpack how a decades-old thermal principle, once used in industrial processes, is being reimagined to meet the explosive demands of AI and high-power GPUs. They explore Accelsius’ patented two-phase cold plate technology - originally developed at Bell Labs - and how it’s being commercialised to deliver unmatched reliability, redundancy, and sustainability. From N+1 pump systems to the role of two-phase in future data center architectures, this episode covers everything from thermal physics to practical deployment strategies. If you’re curious about the roadmap to next-gen cooling, the reality behind liquid vs. immersion, or what’s actually going to enable the Rubin generation of chips… this episode is for you. Connect with Robert: www.linkedin.com/in/robertussher Connect with Richard: https://www.linkedin.com/in/richbonnerphd/
Explore the dynamic world of AI and cooling systems with host Robert Ussher from Hanley Automation. Whether you're a tech enthusiast, policymaker, or simply curious, this podcast is your gateway to understanding the pivotal role of cooling technologies in the AI revolution. Join us for insightful interviews, cutting-edge discussions, and actionable strategies that shed light on the future of AI in DC and beyond. From industry experts to innovative solutions, each episode delivers valuable insights to keep you informed and inspired. Subscribe now to stay ahead of the curve and be part of the conversation shaping the future of AI and cooling in DC.
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