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Energy Newsbriefs Blog

This current awareness service is prepared by the WSU Energy Program Library with funding from the U.S. Department of Energy State Energy Program. This information is provided for energy professionals and interested members of the public to highlight recent energy-related news, articles, and reports that discuss energy efficiency, energy conservation, and renewable sources of energy in engineering and policy circles.

 

Category: HVAC/R

HVAC/R


Glazing Systems: Considerations for the Mechanical Engineer

Consulting-Specifying Engineer, June 2014, by Jerry Bauers and George W. Houk.
http://www.csemag.com/single-article/glazing-systems-considerations-for-the-mechanical-engineer/116b8a44a720582d1d2543d7712a2ca4.html

"Window glazing and shading or louvers have a direct impact on the HVAC load of a building. Mechanical engineers often are tasked with specifying window and shading systems. Know about building envelope, and how it can be managed/altered by window system selection."


Taming an Energy Hog with Efficiency Standards [Furnace Fans]

American Council for an Energy-Efficient Economy (ACEEE), June 25, 2014, by Joanna Mauer.
http://aceee.org/blog/2014/06/taming-energy-hog-efficiency-standard%20

"The Department of Energy (DOE) issued new efficiency standards today that will dramatically reduce the energy use of a little-known home energy hog. Furnace fans, which circulate heated and cooled air throughout a home, consume more than twice the electricity in a year as a typical new refrigerator. The new standards will cut the cost to power furnace fans by about 40% and also deliver improved comfort."

Being Radiant: Planning In-Slab Hydronic Heating and Cooling

The Construction Specifier, June 2014, by Ryan Westlund.
http://www.constructionspecifier.com/masterformat/being-radiant-planning-in-slab-hydronic-heating-and-cooling/

"Radiant systems are ideally suited to a broad range of commercial applications and achieve best results when combined with other energy-efficient solutions in tight building structures. While radiant heating-only systems have a long history in conditioning both commercial and residential structures, radiant cooling is fairly new to North America. Early adopters of these systems were located primarily in arid regions. Mainstream acceptance required the development of more advanced controls, coupled with compelling evidence of reduced energy consumption for the built environment."

Designing for Comfort & IAQ: Air Distribution per ASHRAE 55 and 62.1

The Construction Specifier, June 2014, by Jim Aswegan and David Pich.
http://www.constructionspecifier.com/masterformat/designing-for-comfort-iaq-air-distribution-per-ashrae-55-and-62-1/

"The goal of a room air distribution system is to provide thermal comfort and a healthy living environment for occupants in the space. American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) 55-2013, Thermal Environmental Conditions for Human Occupancy, and ASHRAE 62.1-2013, Ventilation for Acceptable Indoor Air Quality, provide designers with the guidance to optimize health and comfort in building spaces. Many codes, along with the U.S. Green Building Council’s (USGBC’s) Leadership in Energy and Environmental Design (LEED) 2009 program, require compliance with these ASHRAE Standards."

Heat Pumps Designed to Save Energy

Air Conditioning, Heating, Refrigeration News, May 26, 2014, by Joanna R. Turpin.
http://www.achrnews.com/articles/126690-heat-pumps-designed-to-save-energy

"The energy-efficiency ratings of residential air-source heat pumps have risen dramatically over the last few years, with many manufacturers now offering equipment well exceeding the 20-SEER mark. There have been significant gains made in commercial heat pump efficiencies as well, thanks to the growing demand from building owners and managers, who are looking for ways to save energy."

Heat Pumps Riding a Wave of Popularity

Air Conditioning, Heating, Refrigeration News, May 26, 2014, by Matt Bishop.
http://www.achrnews.com/articles/126688-heat-pumps-riding-a-wave-of-popularity

"According to the Air-Conditioning, Heating, and Refrigeration Institute (AHRI), shipments of equipment increased in just about every category in 2013. Especially notable were shipments of air-source heat pumps, which were up 16 percent over 2012.

That good news has spilled over into this year as well, with a recent AHRI report showing a 25.4 percent year-to-date increase in air-source heat pump shipments for the first two months of 2014. With heat pumps becoming more popular across the U.S., manufacturers expect sales to remain strong for quite a while."


Hydronic Heat Recovery in Health Care

ASHRAE Journal, Jun 2014, by Jeremy McClanathan.
http://tinyurl.com/lkd6688

"Swedish Issaquah, a 350,000 ft2 (32 500 m2) hospital located in Issaquah, Wash., uses a hydronic heat recovery system to achieve a 50% energy savings compared to an average hospital in the Pacific Northwest."

Digital Controls Optimize Performance [Airside Economizers]

Heating Plumbing Air Conditioning, May 2014, by Adrienne Thomle.
http://www.hpacmag.com/news/adrienne-thomle-airside-economizer/1003079977/?&er=NA

"The airside economizers of today bear little resemblance to their predecessors."

VAV vs. Radiant [Cooling]: Side-by-Side Comparison

ASHRAE Journal, May 2014, by Guruprakash Sastry & Peter Rumsey.
http://tinyurl.com/pymv8p2

"Infosys, one of India’s top three software companies, implemented a program in 2011 to find the best way to cool its buildings, while creating lower energy buildings that better suited the needs of its employees. The resulting building, Software Development Block 1 (SDB-1) in Hyderabad, not only became the first radiantly cooled building in India, but also resulted in the world’s largest HVAC side-by-side comparison."



Air Barriers: Expectations vs. Reality

Environmental Design & Construction (EDC), May 2014, by Richard Scott and Donald B. Snell. (Requires free registration to view full-text.)
http://www.edcmag.com/articles/95601-air-barriers-expectations-vs-reality?v=preview

"Air barriers are expected to be beneficial to owners of green buildings, but improper specification and installation can cause problems." Includes a chart that compares air barrier standards.

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The Energy Newsbriefs Blog is a continuation of the weekly Energy Newsbriefs. Please bookmark this site and return frequently. Although we will not be accepting comments from within the Blog, we would be happy to hear from you by email at library@energy.wsu.edu

Archives of the weekly Energy Newsbriefs, from Oct. 2012 – Jan. 6, 2014, may be found on the WSU Energy Library web page.

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