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
| Sep 10, 2014
Perry named new director of OSHA’s Standards and Guidance Directorate
Bill Perry has been named new director of the OSHA’s Directorate of Standards and Guidance, effective Aug. 24, 2014.
| Sep 10, 2014
ASHRAE proposes verification for energy standard
The ASHRAE/IES energy standard would have multiple compliance options to ensure verification of delivered building envelope performance under a new proposal.
| Sep 2, 2014
Micro-apartment concept can’t get traction in Boston suburb
Micro-apartments are gaining acceptance in nearby Boston and in places such as San Francisco and New York, but Weymouth, Mass., officials and neighbors were not receptive to a proposal for tiny dwellings this summer.
| Sep 2, 2014
Montreal borough leader urges city to issue green roof guidelines
The mayor of Montreal's Saint-Laurent borough wants Quebec's housing authority to speed up its plan to publish construction guidelines for green roofs.
| Sep 2, 2014
Proposed federal rules would create more stringent healthcare facility safety rules
A key change is a requirement that buildings over 75 feet tall have sprinkler systems throughout the structure. Existing buildings would have 12 years to install them.
| Sep 2, 2014
Construction unions, housing activists press New York mayor on affordable apartment projects
A group of New York City construction unions have joined forces with affordable housing activists to pressure Mayor Bill de Blasio to require organized labor on construction of 80,000 lower-cost apartment units.
| Aug 27, 2014
Houma, La., will tap FEMA grants to raise hurricane resilience standards on public buildings
The Houma-Terrebonne Civic Center and other public buildings in Houma, La., would be renovated to withstand Category 3 hurricane winds according to a plan being considered by the Parish Council.
| Aug 27, 2014
Napa Valley assesses impact of structural retrofits on buildings after earthquake
About 30 inspection teams of two inspectors each have conducted at least quick exterior inspections of downtown Napa, Calif., buildings since a magnitude 6.0 earthquake struck the region.
| Aug 27, 2014
Liberty Building Forensics cautions hotel building teams on moisture, mold issues
Liberty Building Forensics Group, a building forensics firm warned building teams working on hotel projects to be on guard against moisture intrusion and mold.
| Aug 27, 2014
Requirement for site safety inspectors hampering construction in New York City
New York City’s regulation that requires contractors to hire independent safety inspectors for job sites is holding up projects worth millions of dollars, contractors say.
