Cooling & Chillers

ASHRAE creates five categories for liquid-cooled datacom environments

December 5, 2011
/ Print / Reprints /
ShareMore
/ Text Size+

“2011 Thermal Guidelines for Liquid Cooled Data Processing Environments” creates data center classes for liquid cooling that can enable fulltime economizers for a number of applications in many climates, according to according to Don Beaty, chair of the Publications Subcommittee of ASHRAE’s Technical Committee (TC) 9.9, Mission Critical Facilities, Technology Spaces and Electronic Equipment.

 

“2011 Thermal Guidelines for Liquid Cooled Data Processing Environments” can be downloaded for free from the ASHRAE TC9.9 website at www.tc99.ashraetcs.org.

The increasing heat density of modern electronics is stretching the ability of air to adequately cool the electronic components within servers as well as the data center facilities that house these servers. To meet this challenge, the use of direct water or refrigerant cooling at the rack or board level is now being deployed. This trend of increasing heat densities combined with the interest in energy and waste heat recovery created the need for liquid cooling guidelines to help bridge the gap between IT equipment design and data center facility design, according to Beaty.

Five liquid cooling classes have been created:

 

• W1 – Facility Water Supply Temperature of 2° to 17°C

• W2 – Facility Water Supply Temperature of 2° to 27°C

• W3 – Facility Water Supply Temperature of 2° to 32°C

• W4 – Facility Water Supply Temperature of 2° to 45°C

• W5 – Facility Water Supply Temperature of > 45°C

 

In addition to the classes, the white paper provides insight into other considerations for liquid cooling including condensation, operation, water flow rates, pressure, velocitym, and quality as well as information on interface connections and infrastructure heat rejection devices.

This white paper follows an earlier white paper released in May 2011, “2011 Thermal Guidelines for Data Processing Environments – Expanded Data Center Classes and Usage Guidance,” which addresses air cooling in data centers and created new data center environmental classes which expanded the opportunity for chiller-less data centers (fulltime economizers). 

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

ES Gallery: Snapshots & Systems

Check out highlights from projects featured in our magazine this year!
11/20/14 2:00 pm CDT

Key Issues in Selecting Emergency Back-up Generators

Join us for this webinar on key issues for selecting back-up generators, as well as the related critical components in the power chain of emergency power systems.

Engineered Systems Magazine

ES October 2014 cover

2014 October

Check out the October 2014 issue of Engineered Systems, with features on economizers, pump operations, and much more!

Table Of Contents Subscribe

System Design

Based on your experience and knowledge level, are you currently comfortable designing or maintaining a system incorporating VRF or radiant ceiling panels?
View Results Poll Archive

THE ENGINEERED SYSTEMS STORE

The_Green_Energy_Management
The Green Energy Management Book

Learn from our experts how to evaluate job opportunities, market your services, sell a Walk-through Survey, target areas for an Energy Audit, calculate energy savings, do retrofit work, and win continuing contracts for retrofit work.

More Products

Clear Seas Research

Clear Seas Research ImageWith access to over one million professionals and more than 60 industry-specific publications,Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

Tomorrow's Environment Podcast

This series from longtime columnist and chronic forward-thinker Howard McKew covers a lot of ground -- from retrocommissioning to systems training, on toward checklists for drawings and tips for meeting minutes. Click HERE to be taken to the podcast page!

STAY CONNECTED

new Facebook icon Twitter icon YouTube iconLinkedIn icon  Google+