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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


Seawater Warms Up Marine College Building

Engineered Systems, Feb. 2014, by Rob Klinedinst and David Reinheimer.
http://www.esmagazine.com/articles/96378-seawater-warms-up-marine-college-building

"In its latest effort in an ongoing program to green its campus in South Portland, Southern Maine Community College (SMCC) turned to an innovative way to heat and cool one campus building: seawater.

Tapping into nearby Casco Bay, the seawater-based system uses a variable refrigerant flow (VRF) configuration with geothermal heat pumps to heat and cool the 3,250-sq-ft Lighthouse Building, which houses the school’s arts program and offices for The Foundation for Maine’s Community Colleges."

Residential [HVAC] Regulations to Watch in 2014: DOE and EPA Expected to Continue High Level of Activity

Air Conditioning, Heating & Refrigeration News, Feb. 10, 2014, by Kimberly Schwartz.
http://www.achrnews.com/articles/125757-residential-regulations-to-watch-in-2014

"According to the Air-Conditioning, Heating, and Refrigeration Institute (AHRI), the U.S. Department of Energy (DOE) has issued 86 rules regulating the HVAC industry in the past 13 years. And that’s just the DOE. Other federal agencies and various levels of government are making rules that impact the HVAC sector, and industry experts are paying close attention to what may lie ahead in 2014."

 

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."

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."

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."

A Penny Saved... Recent Advances in HVAC System Controls and Operational Efficiency

Business Energy, Jan./Feb. 2014, by Daniel P. Duffy
http://www.businessenergy.net/DE/Articles/A_Penny_Saved__24310.aspx

"A properly operating heating, ventilating, and air-conditioning (HVAC) system is a lot like a football lineman. When it is running perfectly, you don’t even know it is there. Recent advances in efficiency, operating controls, durability, and “smart” applications can make your HVAC system even more unnoticeable."

Right-Size Your Ventilation Needs [with DCV]

Buildings, Jan. 2014, by Jennie Morton.
http://www.buildings.com/article-details/articleid/16743/title/right-size%20your%20ventilation%20needs/viewall/true.aspx

"Can ventilation requirements and energy conservation go hand in hand? They can if you implement demand control ventilation (DCV). There’s no reason to waste energy conditioning air for people who aren’t in your building. Instead of supplying air at fixed rates, DCV automatically adjusts ventilation levels based on real-time occupancy measurements. This strategy allows you to meet code and reduce energy use without sacrificing indoor air quality."

Vaunting VRF: An Energy Slashing System Is on the Rise

Buildings, Jan. 2014, by Christopher Curtland.
http://www.buildings.com/article-details/articleid/16758/title/vaunting-vrf-an-energy-slashing-system-is-on-the-rise.aspx

"While [Variable Refrigerant Flow] VRF has been dominant worldwide for over 20 years, the U.S. has been slow to accept it for several reasons. Products have primarily been manufactured by Asian companies, which at one point had limited presence in the U.S. There is also little critical evaluation of actual field energy performance. But VRF sales in the U.S. are growing and multiple manufacturers offer these systems, including Carrier, Daikin, LG, Mitsubishi, and Sanyo."

Using Duct Surface for Leakage Testing?: Simple Testing Isn’t Always the Most Accurate

Air Conditioning, Heating & Refrigeration News, Jan. 6, 2014, by David Richardson.
http://www.achrnews.com/articles/125242-using-duct-surface-for-leakage-testing

Author questions "the metrics that have been in place for residential duct leakage testing for years. Are they the most accurate metrics to use for determining duct leakage in a residential duct system? Would this be the best metric to use for quantifying duct leakage in residential duct systems?"

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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.