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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


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?"

Energy Efficiency: Information Drives HVAC Savings

Building Operating Management, Jan. 2014, by Jerome Conraud.
http://www.facilitiesnet.com/energyefficiency/article/Information-Technology-Help-McGill-University-Save-On-HVAC-Costs--14649

A 5-part article on the Energy Management Information System (EMIS) at McGill University:
  1. Information, Technology Help McGill University Save On HVAC Costs.
  2. Energy Management Information System Helps McGill University Cut Down On HVAC Energy Usage.
  3. Focus On Demand Can Help Cut HVAC Energy Costs.
  4. Energy Audits, Retrocommissioning Are Keys To Energy Management Plan.
  5. Set Design Standards, Review Them Often To Maximize HVAC Energy Savings.

Critical Facilities: Data Center Deliberation

Building Operating Management, Jan. 2014, by Loren Snyder.
http://www.facilitiesnet.com/datacenters/article/How-HVAC-Economizers-Can-Help-Data-Centers-Meet-Energy-Codes-Energy-Star-Ratings-And-ASHRAE-Standards--14655?source=part

A 4-part article on energy use in data centers:
  1. Air-Flow Management, Economizer Use And Understanding PUE Can Help Improve Data Center Efficiency
  2. How HVAC Economizers Can Help Data Centers Meet Energy Codes, Energy Star Ratings And ASHRAE Standards
  3. Managing Data Center Air Flow With Hot Aisles, Cold Aisles Can Help Drive Energy Efficiency
  4. Tailor Data Center Energy Strategies To Business Needs

About

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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