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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


Variable Volume DOAS Fan-Powered Terminal Unit

ASHRAE Journal, Aug. 2014, by Dan Int-Hout. [Choose Download or Save.]
http://bookstore.ashrae.biz/journal/download.php?file=2014Aug_070-073_HVACapps_Int-Hout.pdf

"Today’s design engineers face a series of complex decisions in an effort to reduce energy consumption and maintain comfort, all while meeting a variety of codes and standards. One option that seems to satisfy all these requirements is a DOAS [dedicated outdoor air system] fan-powered terminal unit. Its combination of a variable speed ECM fan, large sensible cooling coil, and small DOAS primary air valve allows for the widest possible range of operational strategies that both minimize energy and maximize ventilation control."


Integrated Thinking at the Hilton Foundation: Combining Architecture with Operations

Business Energy, Jul/Aug.\ 2014, by Carol Brzozowski.
http://www.distributedenergy.com/DE/Articles/26496.aspx

"The Hilton Foundation building [Agoura Hills, CA], designed to exceed the US Green Building Council’s Leadership in Energy & Environmental Design (LEED) Platinum certification, is significantly more efficient in its use of energy and water than most LEED Platinum office buildings. A large contributor toward achieving net-zero energy is the design of the building’s integrated envelope and building cooling and heating systems."

Ramping Up System Performance [Hydronics]

Heating, Plumbing, Air Conditioning, Aug. 2014, by Mark Norris.
http://www.hpacmag.com/news/hydronics-factors-affecting-system-efficiency/1003216585/

"How do you determine the efficiency of the heating system that you are recommending to a customer? It is an important question that comes up regularly, but there is no simple answer. The simple answer would be the published boiler efficiency, right? Simple, maybe, but probably not correct because the published efficiencies will rarely be an accurate representation of real system efficiency."

Evaluating Power-Demand Reduction With VFD-Controlled Systems

Heating, Piping, Air Conditioning, Aug. 2014, by Alexander L. Burd and Galina S. Burd.
http://hpac.com/motors-drives/evaluating-power-demand-reduction-vfd-controlled-systems

Discusses the "the impact of relative dynamic-pressure losses and other factors on overall power demand and energy savings."

Tips for Updating School HVAC Equipment

Air Conditioning, Heating, Refrigeration News, Aug. 4, 2014, by Jen Anesi.
http://www.achrnews.com/articles/127240-tips-for-updating-school-hvac-equipment

"While times are hard now for many schools, some manufacturers believe an improving economy and increasing availability of alternative financing options will soon make it easier for schools to get the funding necessary for upgrades. And, in the meantime, HVAC products will continue to improve in energy efficiency, ease of installation, and life cycle."


10 Easy Maintenance Tips To Save Cooling-Tower Energy

Maintenance Technology, July 2014, by Baltimore Aircoil Co.
http://www.maintenancetechnology.com/2014/07/10-easy-maintenance-tips-save-cooling-tower-energy/

"Did you know that simple cooling-tower maintenance techniques could help your facility save up to 15% on its electricity costs? Routine preventive maintenance also can help conserve water and extend the operating life of your cooling equipment."

Chiller Retrofits In Health Care Facilities

Engineered Systems, Jul. 2014, by Gary Hamilton. (Free registration required to view full-text.)
http://www.esmagazine.com/articles/96638-chiller-retrofits-in-health-care-facilities

"One of the worst things you can do is note the capacity and replace the chiller. Have the building loads and usage changed? What about motors and cooling towers? Consider these and your part-load realities to create real long-term improvements."

Evaluating Power-Demand Reduction With VFD-Controlled Systems

Heating/Piping/Air Conditioning, July 2014, by Alexander L. Burd and Galina S. Burd.
http://hpac.com/motors-drives/evaluating-power-demand-reduction-vfd-controlled-systems

"This article considers the impact of relative dynamic pressure losses and other factors on overall power demand and energy savings in various systems."

Report Highlights Opportunities for Cooling World’s Data Centers

Heating/Piping/Air Conditioning, July 2014, by Scott Arnold.
http://hpac.com/air-conditioning/report-highlights-opportunities-cooling-world-s-data-centers

Article summarizes and highlights results of a Lux Research report on the forecasted growth of data centers and the resulting demand for cooling equipment and capacity. The full Lux report is not available for free, but this summary is informative.

Wood-Pellet-Fired Boilers Provide Highly Efficient, No-Fuss Operation

Heating/Piping/Air Conditioning Engineering, June 2014, by Dan Vastyan.
http://hpac.com/heating/wood-pellet-fired-boilers-provide-highly-efficient-no-fuss-operation

"The Pennsylvania Department of Conservation and Natural Resources (DCNR)...wanted a district hydronic heating system fired by a renewable fuel—ideally, wood for its Resource Management Center—in Weiser State Forest in eastern Pennsylvania.

After reviewing several proposals, the DCNR chose a solution offered by ATI Systems Inc., a hybrid representative/distributor/engineering-services organization based in Conestoga, Pa., whose founder, Carl Longenecker, has found a way to burn wood automatically at near-condensing efficiencies with an air-friendly emissions profile vastly beyond traditional wood and coal burners
."
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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.