Sustainability and PUE reduction in data centres
The data centre industry is at a crossroads. As demand for colocation, hyperscale cloud, and edge solutions continues to rise, operators and enterprises are also facing up to the reality that sustainable design and operating practice are a mission critical component of the modern data centre. Going green is no longer an optional extra.
Data centres are becoming an increasingly critical foundation that underpins the modern world, and the demand for them continues to grow exponentially each year. Data centres must remain in constant operation in order to provide the services for which customers depend on them.
This mission critical need, combined with the sector-wide push towards reduced energy consumption and carbon footprint throughout the industry, is making the search for innovative evaporative media solutions that keep systems running at peak efficiency an equally mission critical priority.
The two main sources of energy consumption in a modern data centre are its IT equipment and the cooling infrastructure used to keep that equipment cool. A 2017 study found that energy consumption as the direct result of cooling data centre IT equipment can amount to over 40% of the total energy consumption in a facility. From air cooling to liquid and evaporative chillers, data centre operators, finding the right cooling solution for your facility is a top-of-mind goal for any data centre operator.
Portacool: keeping it Kuul
Based in Center, Texas, Portacool is a portable evaporative cooling solutions firm that has been pushing the boundaries of mission critical infrastructure cooling technology since it entered the market in 1990.
Through constant embodiment of its five brand pillars - Safety & Liability, Total Cost of Ownership, Productivity & Performance, Sustainability & Social Responsibility, and Life & Comfort Enhancing Solutions - Portacool has grown steadily over the past 30 years, continually reinforcing its reputation for industry-leading cooling solutions.
Portacool’s solutions have been successfully applied throughout the agricultural and horticultural, manufacturing, industrial, business, entertainment, sports, home, and hobby industries - “anywhere cooling is needed and traditional air conditioning is impractical or cost prohibitive.”
The company’s sub-brand, Kuul, is Portacool’s answer to the growing need for reliable, sustainable cooling solutions in the data centre sector. Portacool manufactures three series of evaporative media – Kuul Control, Kuul Vitality and Kuul Evolution. Kuul Control is used in power gen, HVAC systems, and Portacool-branded portable evaporative coolers. Kuul Vitality is utilized primarily in the horticulture, poultry, and swine industries. Kuul Evolution is designed for the industrial, commercial, and data centre industries.
Kuul can help data centre operators lower their PUE dramatically, increasing the environmental sustainability of their facilities significantly as a result of its rigid evaporative media solutions.
Liquid cooling market poised for growth
The data centre liquid cooling market is set for strong growth over the coming decade, as a series of high-profile trials by prominent hyperscalers and growing demand for greener, more efficient cooling drives adoption throughout the industry. A new report by Research and Markets puts the size of the liquid cooling industry in 2021 at just over $3.19bn globally. By 2026, that market is expected to exceed $7.2bn, exhibiting a CAGR of 14.64%.
Liquid cooling can trace its roots all the way back to the mid-1960’s, when IBM launched its first cooling system that used water instead of air. Chilled water was used to cool interboard heat exchangers to reduce the temperature rise across multiple stacks of boards populated with cards. The technology was, like many new innovations, somewhat expensive and unreliable; putting water and expensive electronics in close proximity to one another has always been seen as a somewhat risky business.
Things have come a long way since then, however, and it seems as though liquid cooling might finally be reaching maturity at a critical juncture in the data centre industry’s history, as skyrocketing demand for digital infrastructure collides with the non-negotiable need for more sustainable designs.
Research and Markets’ report lists three key factors as the key drivers behind this growth rate, which is expected to be more than 4% faster than the expansion of the overall data centre cooling industry during the 2021-2026 period.
Strategic collaboration with leading technical giants
Earlier this year, hyperscale cloud giant Microsoft announced that it had been playing around behind the scenes with a new type of liquid cooling solution from Bitfury spinout firm LiquidStack. We actually sat down with LiquidStack’s CEO, Joe Capes recently, and you can read the full interview in this month’s issue of Data Centre Magazine.
Microsoft’s interest in liquid cooling solutions apparently stems from its need to ensure its hyperscale facilities (which the company builds denser and runs hotter every year) continue to make progress in terms of efficiency.
“Air cooling is not enough,” said Christian Belady, distinguished engineer and vice president of Microsoft’s datacenter advanced development group in Redmond, Washington. “That’s what’s driving us to immersion cooling, where we can directly boil off the surfaces of the chip.”
Because heat transfer in liquids is orders of magnitude more efficient than air, Microsoft (and likely other hyperscalers looking to reap similar rewards) is expected to be a key driver of hyperscale adoption throughout the industry.
Bolstered production of liquid cooling systems
In response to growing interest and demand, liquid cooling companies are racing to globalise and scale up their offerings. A recent report from Markets and Markets identified more than 10 firms from across the world currently either diversifying into or directly targeting the liquid cooling sector of the data centre cooling industry: Asetek (Denmark), Rittal (Germany), Vertiv (US), Green Revolution Cooling (US), Midas Green Technologies (US), Allied Control (Hong Kong), Schneider Electric (France), Chilldyne (US), CoolIT Systems (Canada), Submer (Spain), Iceotope (UK), Fujitsu (Japan), Aspen Systems (US), DCX The Liquid Cooling Company (Poland), Ebullient (US), Aquila Group (US), ExaScaler (Japan), Cooler Master Co (China), Asperitas (Netherland), and Liqit.io (Ukraine).
Need to address the limitations associated with air-based cooling
Air cooling (such as hot-aisle-cold-aisle setups) remains the most widely-utilised solution for cooling data centres. However, as rack densities rise, and the climate crisis continues to make air-based free cooling less of a viable option in more and more places, liquid cooling could be the solution.
The growth of data centres at the edge is also a potential driver of liquid cooling adoption. Because edge data centres are built on much smaller footprints (commonly enough inside a shipping container), huge walls of fans are rarely efficient enough in terms of square-footage to support edge data centre needs, particularly with the growth of high performance computing (HPC) applications at the network edge.