flexiblefullpage
billboard
interstitial1
catfish1
Currently Reading

Slash energy consumption in data centers with liquid-based ‘immersive-cooling’ technology

Slash energy consumption in data centers with liquid-based ‘immersive-cooling’ technology

A new technology promises to push the limits of data center energy efficiency by using liquid instead of air to cool the servers.


By David Barista, Editor-in-Chief | October 14, 2014
Immersive cooling systems use a liquid instead of air to cool the servers. The b
Immersive cooling systems use a liquid instead of air to cool the servers. The basic idea is to submerge the motherboards in tan

In the rush to slash energy consumption in power-hungry data centers, design teams, equipment manufacturers, and tech companies have been developing clever, low-energy cooling solutions—from Facebook’s open-rack server setup with exposed motherboards, to Skanska’s eOPTI-TRAX liquid refrigerant coil system, to Google’s evaporative cooling schemes.

Solutions like these have helped data center facility operators achieve unprecedented energy performance levels, with power utilization effectiveness (PUE) ratios dipping below 1.10 in some instances. This means that less than 10% of the total energy consumption in a facility is attributed to noncomputing functions, such as air-conditioning and lighting.

Now, a new technology promises to push the limits of data center energy efficiency even further. Called immersive cooling, it uses a liquid instead of air to cool the servers. LiquidCool Solutions, Green Revolution, and 3M are among the pioneers of this technology. Each system works a bit differently, but the basic idea is to submerge the motherboards in tanks filled with nonconductive fluid, which absorbs the heat generated by the processors. 

LiquidCool Solutions, for example, uses an enclosed server module and pumps dielectric fluid through the server enclosure. Green Revolution uses a tub full of dielectric oil and circulates the liquid through the tubs. 3M also uses the tub approach, but the fluid boils and then is condensed to reject the heat.

By using liquid-based cooling at the server level, the need for air-conditioning is greatly reduced, or even eliminated in some climates. The same goes for traditional HVAC equipment and systems—chillers, fan units, raised floors, and so on. 

 


The Allied Control 500 kW immersion-cooled data center in Hong Kong is capable of delivering a PUE of just 1.02. The standard, 19-inch server racks use 3M Novec Engineered Fluids to enable tight component packaging for greater computing power in less space, according to Allied. Its open-bath design permits easy access to hardware and eliminates the need for pressure vessel enclosures and charging/recovery systems. PHOTO: COURTESY ALLIED CONTROL 

 

“In most parts of the world, compressorized cooling would not be required with immersive cooling, since the liquid temperatures can be at a level where direct heat rejection using outdoor condensers or cooling towers would be sufficient,” says Thomas Squillo, PE, LEED AP, Vice President with Environmental Systems Design, who is currently researching the technology for the firm’s data center clients. “The fan energy is also eliminated, both in the HVAC system and in the server itself. Fluid pumping energy is very low.”

Other advantages of the cooling technology, according to Squillo:
• Increased performance and service life of the computer chips by eliminating heat buildup and problems related to contaminated air and dust.
• Ability to deploy data centers in extremely harsh environments without greatly impacting energy performance.
• Potential construction cost savings by downsizing or eliminating traditional HVAC systems. 

Other than a few pilot projects, including a Bitcoin mining data center in Hong Kong and a Lawrence Berkeley National Laboratory-led installation in Chippewa Falls, Wis., immersive cooling technology is largely untested. A year into the Bitcoin pilot, the data center operator reported a 95% reduction in cooling costs. 

AEC professionals are starting to realize the potential for immersive cooling, especially for high-performance computing centers and consolidated, high-density data centers. 

“Large data centers that have many homogenous machines at high density—like those operated by Internet and cloud providers—are a good application,” says Squillo. “Small footprint and minimal energy use are very important due to the volume of servers. These can be deployed in remote areas where space and energy are cheap, but where air quality may be a concern, without having to worry about the data center air.”

 

TRICKY DESIGN CONSIDERATIONS

Before the technology can be implemented, says Squillo, several nettlesome design factors specific to immersive cooling have to be addressed:
• Piping distribution to the racks and cooling units requires redundancy and valving to accommodate equipment maintenance without disrupting server performance.
• Additional equipment and space are needed to drain fluid from the tanks for server maintenance.
• Local code requirements may limit the amount of fluid that can be stored in a single room.
• For the foreseeable future, it’s unlikely that a large data center would be 100% liquid-immersion cooled. This means provisions will have to be made for both air- and liquid-cooling systems, which will require additional space in the data hall and mechanical room.

“I think that some form of this technology will definitely be the direction the data center market will take in the future,” says Squillo. “The market just needs to mature enough for owners to trust the technology and demand servers that are designed for a particular type of liquid cooling. In the short term, I see large companies and server manufacturers doing small-scale installations to test the concept, before wanting to implement it at a large scale.”

Related Stories

| Aug 11, 2010

ACSA announces 2008-2009 ACSA/AISC steel design student competition winners

The Association of Collegiate Schools of Architecture (ACSA) is pleased to announce the winners of the ninth annual steel design student competition for the 2008-2009 academic year.  Administered by the Association of Collegiate Schools of Architecture (ACSA) and sponsored by the American Institute of Steel Construction (AISC), the program challenged students, working individually or in teams, to explore a variety of design issues related to the use of steel in design and construction.

| Aug 11, 2010

ZweigWhite Announces 2009 Best Firms to Work For

Management consulting and research firm ZweigWhite has identified the best civil engineering, structural engineering, multidiscipline A/E services, environmental services, and architecture firms to work for in its annual ranking of top industry firms. These outstanding employers were selected based on their commitment to provide a positive work environment and challenging and interesting work opportunities for their employees.

| Aug 11, 2010

Autodesk 2010 Certification Now Available for Design Professionals

Autodesk, Inc., (Nasdaq: ADSK), today announced that design and engineering professionals can become Autodesk Certified in AutoCAD 2010, Autodesk Inventor 2010, Autodesk Revit Architecture 2010, and AutoCAD Civil 3D 2010 software. Becoming Autodesk Certified allows professionals, and companies boasting Autodesk Certified employees, to validate their industry skills and knowledge, demonstrate expertise and gain credibility.

| Aug 11, 2010

Jacobs, CH2M Hill, AECOM top BD+C's ranking of the 75 largest federal government design firms

A ranking of the Top 75 Federal Government Design Firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants

| Aug 11, 2010

Manhattan's Pier 57 to be transformed into cultural center, small business incubator, and public park as part of $210 million redevelopment plan

LOT-EK, Beyer Blinder Belle, and West 8 have been selected as the design team for Hudson River Park’s Pier 57 at 15th Street and the Hudson River as part of the development group led by New York-based real estate developer YoungWoo & Associates. The 375,000 square foot vacant, former passenger ship terminal will be transformed into a cultural center, small business incubator, and public park, including a rooftop venue for the Tribeca Film Festival.

| Aug 11, 2010

AIA selects three projects for National Healthcare Design Awards

The American Institute of Architects (AIA) Academy of Architecture for Health (AAH) have selected the recipients of the AIA National Healthcare Design Awards program. The AIA Healthcare Awards program showcases the best of healthcare building design and healthcare design-oriented research.  Projects exhibit conceptual strengths that solve aesthetic, civic, urban, and social concerns as well as the requisite functional and sustainability concerns of a hospital.

| Aug 11, 2010

AGC: Construction employment declines in 47 states in July

Few states were immune from construction employment declines this July based on an analysis of federal employment data released today by the Associated General Contractors of America.  That analysis found that 47 states saw declines in construction employment, while only two states saw increases and one saw no change in construction employment between July 2008 and July 2009.

| Aug 11, 2010

AGC: Construction unemployment reaches 19.2%

Unemployment in the construction sector climbed to a “horrendous” 19.2 percent (not-seasonally adjusted) as an additional 59,000 construction workers lost their jobs in May according to new federal data, said construction economist Ken Simonson today.

boombox1
boombox2
native1

More In Category


Urban Planning

Bridging the gap: How early architect involvement can revolutionize a city’s capital improvement plans

Capital Improvement Plans (CIPs) typically span three to five years and outline future city projects and their costs. While they set the stage, the design and construction of these projects often extend beyond the CIP window, leading to a disconnect between the initial budget and evolving project scope. This can result in financial shortfalls, forcing cities to cut back on critical project features.



Libraries

Reasons to reinvent the Midcentury academic library

DLR Group's Interior Design Leader Gretchen Holy, Assoc. IIDA, shares the idea that a designer's responsibility to embrace a library’s history, respect its past, and create an environment that will serve student populations for the next 100 years.

halfpage1

Most Popular Content

  1. 2021 Giants 400 Report
  2. Top 150 Architecture Firms for 2019
  3. 13 projects that represent the future of affordable housing
  4. Sagrada Familia completion date pushed back due to coronavirus
  5. Top 160 Architecture Firms 2021