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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


Making the Case for Zero-Leak Ducts

Journal of Light Construction, Apr. 2014, by Mike MacFarland.
http://www.jlconline.com/hvac/making-the-case-for-zero-leak-ducts_o.aspx

"Installing ducted distribution systems that fully contain and deliver all of the air that moves through to the intended locations offers many benefits for the builder, homeowner, installing contractor, and the environment."

The Long Winding Road Toward Efficient Furnaces

American Council for an Energy-Efficient Economy (ACEEE), Apr. 24, 2014, by Andrew deLaski.
http://aceee.org/blog/2014/04/long-winding-road-toward-efficient-fu

"The struggle for improved gas furnace efficiency standards may have an end in sight. Yesterday, the U.S. Court of Appeals for the D.C. Circuit approved a settlement between the Department of Energy (DOE) and an industry trade group. In the settlement, DOE agreed to pull back efficiency standards completed in 2011 and develop new standards in their place within two years. This new rulemaking represents another opportunity to set strong furnace standards which will save energy and cut consumers’ heating bills."

Geothermal Heat Pumps vs. Condensing Boilers [in Schools]

Heating/Piping/Air Conditioning, Mar. 2014, by Ramez Naguib. (Free registration required to view full-text.)
http://hpac.com/heating/geothermal-heat-pumps-vs-condensing-boilers

"This article compares the energy performance of two air-conditioning systems common in schools across the United States: condensing-boiler heating systems and geothermal water-source-heat-pump systems. In the case of geothermal water-source-heat-pump systems, the article also compares the performance of new systems to that of systems older than 10 years."

What Owners Need to Know About...School Summer HVAC Maintenance

Heating/Piping/Air Conditioning Engineering, Mar. 2014, by Peter D'Antonio. (Free registration required to view full-text.)
http://hpac.com/air-conditioning/what-owners-need-know-about-school-summer-hvac-maintenance

"13 steps to sustained efficiency, reduced costs, and prolonged equipment life."

Motor Selection in HVAC Design

Engineered Systems, Mar. 2014, by Gary Hamilton.
http://digital.bnpmedia.com/publication/?i=198332&p=40

"Who actually specified that motor? Did they keep the entire system in mind or were they simply specifying one component at a time? And will that spec require over-speeding the motor? Answers to the first two questions frequently aren’t what they should be these days, and the fallout from over-speeding isn’t so great, either. We can do better."

HVAC Upgrades: Opportunity Knocks

Building Operating Management, Mar. 2014, by Charbel Farah.
http://www.facilitiesnet.com/hvac/article/Taking-A-Systems-View-Of-HVAC-Upgrades-Can-Lead-To-Bigger-Benefits--14805

A five-part article:
Part 1: Taking a Systems View of HVAC Upgrades Can Lead to Bigger Benefits
Part 2: Refrigerant, Water, Air Leaks Can All Lead to HVAC Problems
Part 3: Economizers, Heat Recovery Can Help Reduce Demands On HVAC Systems
Part 4: How Lawrence Berkeley National Laboratory Used an HVAC Systems Approach to Upgrade
Part 5: Capitol Records Building Upgrade Solves HVAC Issues

Constructing Comfort — One Tool at a Time: It Takes the Right Instruments to Get the Job Done

Air Conditioning, Heating & Refrigeration News, Mar. 3, 2014, by Cherie Preville.
http://www.achrnews.com/articles/126051-constructing-comfort-one-tool-at-a-time

"HVAC contractors aim to make homeowners comfortable in their own houses. To achieve this goal, a growing number of contractors are extending their attention beyond basic HVAC equipment; they’re considering efficiency improvements to the entire residential structure. Once equipped with the right dose of knowledge and the proper tools, contractors are able to offer whole-house “Goldilocks” solutions: Those that fit just right."

What Owners Need to Know About ... Rooftop Units: Repair or Replace?

Heating/Piping/Air Conditioning Engineering, Feb. 2014, by David Negrey. (Free registration required to view full article.)
http://hpac.com/air-conditioning/what-owners-need-know-about-rooftop-units-repair-or-replace

"Most light-commercial HVAC products are designed for a useful life of 15 to 20 years. During that time, however, the reliability and cost-effectiveness of operation often is dictated by factors beyond the manufacturer’s control. At the same time, newer, more efficient HVAC products often can reduce maintenance and utility costs. When it comes to deciding whether to repair or replace an older rooftop unit, it is important to consider a number of factors, including current condition, age, efficiency, maintenance/repair history, and associated utility costs. This article will discuss the process of making an informed decision."

For Better Or For Worse...R-22 RIP (Part 3)

Heating, Plumbing, Air Conditioning, Feb. 2014, by Dave Demma.
http://www.hpacmag.com/news/for-better-or-for-worse-r-22-rip/1002910208/

The first two articles in the series discussed the importance of having an R-22 refrigerant replacement strategy, help in choosing a replacement, and the process of implementing the conversion. 

This 3rd and final article in the series discusses how "a detailed plan can be assembled to ensure the conversion is completed in a minimum amount of time, and the result is a system that operates efficiently and trouble free."

Links to Part 1 and 2:
Part 1 - Oct. 2013 - http://www.hpacmag.com/news/for-better-or-for-worse-r-22-rip/1002665122/?&er=NA

Part 2 - Dec. 2013 - http://www.hpacmag.com/news/demma-r22-refrigerant-conversion/1002789061/


Restoring The Low Limit For Indoor Relative Humidity

Engineered Systems, Feb. 2014, by Gary L. Berlin.
http://www.esmagazine.com/articles/96370-restoring-the-low-limit-for-indoor-relative-humidity

"Industry leaders realized hundreds of years ago that their processes and machines operate best when the indoor relative humidity is maintained at an optimum level for their process. They found it was necessary to use energy to increase productivity, lower scrap and environment impacts, maintain profits, and maintain costs to their customer. It does not matter if their process is related to food, woodworking, textiles, printing, pharmaceuticals, electronics, automotive, laboratories, or maintaining and preserving artifacts in museums and libraries. Controlling the indoor humidity was and is still critical for their applications."

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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.