ASHRAE recently released “Liquid Cooling Guidelines for Datacom Equipment Centers,” second edition, a guide for implementing liquid cooling systems in data centers. The guide provides guidelines on interface requirements between chilled-water systems and technology cooling systems and on the requirements of liquid-cooled systems that attach to a datacom electronics rack.
Data center rack heat loads are steadily climbing, creating a need for liquid cooling solutions to reduce the volume of airflow needed, ASHRAE says. “There is an increasing interest in liquid-cooled IT equipment at the rack, equipment and component levels,” says Don Beaty, publication chair of Technical Committee 9.9., Mission Critical Facilities, Data Centers, Technology Spaces and Electronic Equipment. “There is also increased interest in reuse of the heat rejected from IT equipment. One of the more important changes to the second edition is the addition of supply water temperature classification.”
The addition of liquid classes can have a similar effect on the industry as the creation of supply air temperature classes did—which was the critical enabler to the use of economizers in data centers, Beaty says. “There are five water temperature classes with the highest temperature class being >45 C (113 F), which opens up possibilities for using the rejected heat for building heating systems,” he said.
Related Stories
| Feb 7, 2014
ASHRAE releases new refrigerant standards
The 2013 editions of ASHRAE’s major refrigerants-related standards, incorporating 41 new addenda, have been published.
| Feb 7, 2014
Ohio legislature moves to bar LEED standards on state projects
The use of LEED standards is being barred for public construction in Ohio under a state senate resolution.
| Jan 31, 2014
Center for Environmental Innovation in Roofing releases solar panel racking criteria for asphalt shingle roof systems
The Center for Environmental Innovation in Roofing’s PV Taskforce is releasing the first public draft of PV Racking and Attachment Criteria for Effective Asphalt Shingle Roof System Integration for an initial round of public comment.
| Jan 31, 2014
Developers are exceeding LEED standards for marketing purposes
Using LEED certification as a marketing tool is perceived by developers to be a successful tool, and this has pushed them to go above the minimum requirements at each level of certification, according to a study in the Environmental Science & Technology journal.
| Jan 31, 2014
OSHA extends feedback period for disclosure of workplace injuries proposal
The Occupational Safety and Health Administration said it would extend the comment period for a proposal that would require employers to submit electronic reports of workplace injuries and illnesses.
| Jan 31, 2014
DOE releases new efficiency standards for halide lamps
The Energy Department has finalized new energy efficiency standards for metal halide lamp fixtures, which are used in lighting for big box stores and parking lots.
| Jan 31, 2014
New LEED online platform now available for LEED v4 projects
LEED v4 projects will be the first to experience the new LEED Online platform with streamlined documentation and processes.
| Jan 26, 2014
New York extends, enhances tax abatements to promote green roofs
The expansion of a tax-abatement program for green roofs under New York state law doubles the previous maximum benefit of $100,000, adds new plant species to the list of those applicable for the tax break.
| Jan 23, 2014
Washington state micro apartment law prompts fire safety concerns
Proposed legislation to further regulate the building of micro apartments has triggered appeals from community activists concerned that fire safety standards are sub-par.
| Jan 23, 2014
Pennsylvania owes school districts $1B for construction projects
The Pennsylvania Department of Education owes about $1 billion to numerous school districts for about 350 state-approved renovation and construction projects.
