Bookmark and Share

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


School Districts Strive for Efficiency, Occupant Comfort

Ari Conditioning, Heating & Refrigeration, Aug. 3, 2015, by Jen Anesi.
http://www.achrnews.com/articles/130253-school-districts-strive-for-efficiency-occupant-comfort

"It’s no secret that many school districts across the country lack funding for buildings repairs and desperately need to upgrade their facilities. While some administrators put off HVAC projects for as long as they can, choosing to repair instead of replace antiquated equipment, others are looking for ways to save energy and money in the long run while operating as green and sustainably as possible. The following case studies illustrate how schools across the country are implementing different HVACR solutions to achieve these goals."

Thermostatic Radiator Valves for Multiunit Residential Buildings

HPAC Engineering, July 2015, by Bill Boss.
http://hpac.com/heating/thermostatic-radiator-valves-multiunit-residential-buildings

"A simple, cost-effective way to combat overheating in older apartment buildings."

Saving Water with Cooling Towers

ASHRAE Journal, Aug 2015, by Frank Morrison.
http://bookstore.ashrae.biz/journal/download.php?file=2015Aug_020-033_Morrison.pdf

"Saving water with cooling towers. At first glance, this statement seems counterintuitive. Cooling towers save energy but aren’t they major users of water? This article will help readers understand the critical role evaporative heat transfer systems play in a sustainable environment, explore how water is consumed in such systems, and review the strategies that help minimize the use of both water and energy."

10 Cooling Tower Maintenance Tips

Air Conditioning, Heating, Refrigeration News, June 22, 2015, by Baltimore Aircoil Co.
http://www.achrnews.com/articles/129904-cooling-tower-maintenance-tips

"A well-maintained unit will continue to function at the original optimum efficiency. Over time, a neglected cooling tower’s leaving water temperature will increase, raising energy costs by up to 6 percent for every 2°F increase. However, a well-maintained cooling tower will continue to function at the original optimum efficiency, keeping energy costs low. These simple preventive cooling tower maintenance tips can help users save up to 15 percent on electricity costs. Routine maintenance also helps to conserve water and extend the operating life of cooling equipment."

Expensive Doesn’t Always Mean Efficient: Correctly Sizing, Selecting, and Installing Equipment...

Air Conditioning, Heating, Refrigeration News, June 22, 2015, by Joanna R. Turpin.
http://www.achrnews.com/articles/129879-expensive-doesnt-always-mean-efficient

"HVAC systems now come with higher efficiencies than ever, with air-source cooling equipment surpassing the 25-SEER mark and gas furnaces achieving more than 98 percent AFUE. Customers who pay for these highly efficient (and expensive) systems expect them to achieve those ratings and provide superior comfort, and, if they don’t, they are often disappointed and even angry. When high-end equipment does not live up to consumer expectations, the culprit is almost always improper installation.

The bottom line: Properly sizing, selecting, and installing HVAC equipment is critical to ensuring energy efficiency and comfort
."

Technology Solutions Case Study: Overcoming Comfort Issues Due to Reduced Flow Room Air Mixing

U.S. Department of Energy, Building America, March 2015.
http://energy.gov/sites/prod/files/2015/03/f20/ba_case_study_reduced
_flow_room_airmixing.pdf


"The U.S. Department of Energy Building America team IBACOS studied when HVAC equipment is downsized and ducts are unaltered to determine conditions that could cause a supply air delivery problem and to evaluate the feasibility of modifying the duct systems using minimally invasive strategies to improve air distribution."

Enduring Summer’s Deep Freeze

New York Times, July 4, 2015, by Kate Murphy.
http://www.nytimes.com/2015/07/05/sunday-review/enduring-summers-deep-freeze.html

"Why is America so over air-conditioned? It seems absurd, if not unconscionable, when you consider the money and energy wasted — not to mention the negative impact on the environment from the associated greenhouse-gas emissions. Architects, engineers, building owners and energy experts sigh with exasperation when asked for an explanation. They tick off a number of reasons — probably the most vexing is cultural."

Are Your HVAC Controls Helping or Hurting?

Buildings, Aug. 1, 2015, by Janelle Penny.
http://www.buildings.com/article-details/articleid/19188/title/are-your-hvac-controls-helping-or-hurting.aspx

"Sophisticated controls can be a great way to boost the energy efficiency of your HVAC system, but if they’re not installed properly or used correctly, you may end up wasting energy without realizing it."

3 Options for HVAC Energy Savings

Building Operating Management, June 2015, by James Piper.
http://www.facilitiesnet.com/hvac/article/3-Options-for-Energy-Savings-in-HVAC-Systems-Facilities-Management-HVAC-Feature--15949

"Even with today’s falling energy prices, facility managers are looking for ways to reduce the energy use of HVAC systems. New technologies and improvements in existing technologies are giving facility managers options. While advances can be seen in practically all HVAC systems, some of the most significant advances are coming in three particular areas: variable refrigerant flow systems, rooftop units, and geothermal systems."

Is VRF Right for Your Next Project?

Consulting-Specifying Engineer, June 2015, by Amara Rozgus.
http://www.csemag.com/single-article/is-vrf-right-for-your-next-project/813af7c1ee8273ef158c0c3463470ee3.html

"Variable refrigerant flow (VRF) systems can be specified into a variety of buildings, especially those that require flexibility. An overview of these systems and some best practices have been provided by Julianne Laue, PE, LLED AP BD+C, BEMP, senior energy engineer at the Center for Energy Performance, Mortenson, Minneapolis."

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