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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.

 


RTUs Cool More Space Using Less Energy

Air Conditioning, Heating & Refrigeration News, Feb. 10, 2014, by Dan Vastyan.
http://www.achrnews.com/articles/125759-rtus-cool-more-space-using-less-energy

"Some industry experts in the HVAC industry consider gas-fired condensing combustion heating systems to be the final frontier in rooftop heating technology.  As seen during the formative years, throughout the development of high-efficiency residential furnaces, several manufacturers boast condensing rooftop equipment on the market. Most product lines available today are in the 90-92 percent efficiency range, but a few approach 95 percent."

Commissioning Beyond the Documents: Using Commissioning as the Basis for Innovation and Improved Performance

HPAC Engineering, Jan. 2014, by James I. Givens.
http://hpac.com/archive/commissioning-beyond-documents (requires free registration)

"Realizing the fundamental intent of commissioning requires an inherent understanding of a facility, the procedures/operations within, and the integration of building systems. This reaches far beyond documents and is where the value in commissioning is found."


VFD, Motor Strategies for Energy Efficiency

Consulting-Specifying Engineer, Jan./Feb. 2014, by John Yoon, PE, LEED AP.
http://www.csemag.com/single-article/vfd-motor-strategies-for-energy-efficiency/5d507c13fed1f2680da1f419b85cefa6.html

"A variable frequency drive (VFD) often is specified to save money by reducing energy consumption in pumps, fans, compressors, or any other motor loads that may be found in a typical building. These best practices will provide the engineer with information on how to specify a VFD to meet load conditions while achieving efficiency."

Don't Blow Your Money on a Steam Trap

Consulting-Specifying Engineer, Jan./Feb. 2014, by David Grassl, PE.
http://www.csemag.com/single-article/don-t-blow-your-money-on-a-steam-trap/1ea8d3707c39adae4585b425e07b4f31.html

"Steam and condensate leaks cost buildings and industrial plants millions of dollars in lost energy, while increasing emissions from boilers due to increased operation, creating potential safety hazards, and lowering the reliability of operations. This article will review the many factors that impact the reliability, performance, longevity, and maintenance requirements for condensate return piping systems."

Establishing Proper Pressure Drop for Feedwater Flow Control Valves

Power Magazine, Feb. 2014, by S. Zaheer Akhtar, PE.
http://www.powermag.com/establishing-proper-pressure-drop-for-feedwater-flow-control-valves/

"Feedwater control valves play a critical role in boiler operation. One important parameter of their design is the pressure drop at the rated condition as well as off-design conditions. However, conventional methods used for establishing control valve pressure drop cannot be used at face value without reviewing all plant operating scenarios."

What Owners Need to Know About ... Maximizing Boiler Efficiency

HPAC Engineering, Jan. 2014, by Peter D'Antonio.
http://hpac.com/heating/what-owners-need-know-about-maximizing-boiler-efficiency (free registration is required)

"Hydronic heating systems are becoming increasingly common in commercial buildings, playing an ever-expanding role in high-performance design. This article discusses tried-and-true methods of minimizing costly mistakes and maximizing efficiency."


What Now: Complying With Major- and Area-Source Boiler Rules

HPAC Engineering, Jan. 2014, by Thomas Fitzpatrick.
http://hpac.com/heating/what-now-complying-major-and-area-source-boiler-rules (free registration required)

"Covering both new and existing boilers, which are divided into 19 subcategories, the rules [EPA] establish numerical limits for emissions of five pollutants: carbon monoxide (CO), hydrogen chloride (HCl), mercury (Hg), and filterable particulate matter or total selected metals. There are various requirements regarding start-up and shutdown to meet, and most boilers are required to have a tune-up; meanwhile, a one-time energy assessment is required for affected units."

An Advanced Frame of Mind: Next-Generation Framing for Energy-Efficient Glazing

The Construction Specifier, Feb. 2014, by Chuck Knickerbocker.
http://www.kenilworth.com/publications/cs/de/201402/files/38.html

"Curtain wall and window framing establishes the total possible area of unobstructed glazing, provides support for high-efficiency glass units, and can help improve thermal performance. With proper specification, it has the potential to help manage a building's lighting, heating, and cooling energy consumption. However, there is a fine line between good daylighting and increased energy consumption."

Boilers, Water Heaters Efficiently Evolve: Manufacturers Aim For Higher Efficiencies, Smaller Footprints

Air Conditioning, Heating & Refrigeration News, Jan. 27, 2014, by Matt Bishop.
http://www.achrnews.com/articles/125637-boilers-water-heaters-efficiently-evolve

"When it comes to boilers and water heaters, manufacturers are sensing an ongoing trend — the move to higher-efficiency models." Article also discusses the trend towards space efficiency for residential models, and hybrid systems for commercial boilers.

Arid Anaerobics: Colorado Cattle Managers Spurred to Consider Anaerobic Digestion

Manure Manager, Jan./Feb. 2014, by Tony Kryzanowski.
http://www.mydigitalpublication.com/publication/index.php?i=0&m=1559&l=1&p=3&pre&ver=flex (article begins on page 10)

"Anaerobic digestion of cattle manure has not taken off in the arid western United States like it has in other parts of the country. The main reason it hasn’t taken hold in this part of the United States is water scarcity. Water is a critical factor in anaerobic digestion.
Researchers at Colorado State University believe this method of manure disposal might still work under the right circumstances. For that reason, they have created an online decision tool for use by both cattle feedlot and dairy farmers to help them determine if anaerobic digestion of their manure could be a viable optio
n."

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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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