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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


Rooftop Refrigeration Unit Performance

ASHRAE Journal, Apr. 2016, by Kenneth M. Elovitz.
http://bookstore.ashrae.biz/journal/download.php?file=2016Apr_034-043_Elovitz.pdf

"Diagnosing a rooftop air-conditioning equipment performance problem requires analyzing complete refrigeration system performance data. The systematic approach described in this article resulted in replacing orifice-type metering devices with a traditional thermal expansion valve—and remedying insufficient dehumidification."

A Simple Approach to Affordable GSHPs

ASHRAE Journal, Apr. 2016, by Steve Kavanaugh and Chris Gray.
http://bookstore.ashrae.biz/journal/download.php?file=2016Apr_014-025_Kavanaugh.pdf

"Conventional wisdom says ground source heat pumps (GSHPs) should not be considered for commercial and institutional buildings because of the added cost. This article investigates how building owners leasing the ground heat exchanger can make GSHPS affordable for commercial and institutional applications."

Wood Alternatives to Fossil Fuels [Wood Pellets]

Buildings, Mar. 2016, by Janelle Penny.
http://www.buildings.com/news/industry-news/articleid/19958/title/wood-alternatives-to-fossil-fuels.aspx

"Could scraps from sawmills and furniture manufacturers become an affordable, eco-friendly heating option for your facility? Wood chips and pellets – a compressed form of wood-based waste that resembles rabbit feed – are growing in popularity as a green replacement for conventional heating fuels."

Design Considerations for Dedicated OA Systems

ASHRAE Journal, Mar. 2016, by Hugh Crowther and Yi Teng.
http://tinyurl.com/h4xlwh2

"Dedicated outdoor air systems (DOAS) decouple the heating, cooling, dehumidification and humidification of outdoor air from the space air-conditioning system. Common HVAC systems such as water (ground) source heat pumps, variable refrigerant flow (VRF), fan coils and chilled beams require a DOAS to meet ventilation requirements. But DOAS is a system, not a piece of equipment."

The Ultimate Biomass Heating Package [in a School]

Biomass Magazine, Mar. 2016, by Ron Kotrba.
http://biomassmagazine.com/articles/12891/the-ultimate-biomass-heating-package

"Via a contractual arrangement unique to biomass heat in the U.S., Wilton, New Hampshire-based High Mowing School replaced fuel oil with a biomass district heating system from Xylogen."

Absorption Chillers For Institutional Occupancies

Engineered Systems, Feb. 2016, by Marcia Karr.
http://www.esmagazine.com/articles/97567-absorption-chillers-for-institutional-occpancies

"It's not necessarily a plug-and-play situation, but these chillers can play key roles and deliver meaningful savings in several scenarios. Waste heat, CCHP, standalone, and even renewable solar as part of the refrigeration cycle can all provide the setting for absorption success."

VRF: Now More Than Ever

Engineered Systems, Feb. 2016, by James J. Siegel.
http://www.esmagazine.com/articles/97577-vrf-now-more-than-ever

"It’s not a new technology, but it’s more popular than ever. While VRF is providing engineers and building owners with a financial payback, the benefits go beyond energy efficiency. Take the tour from California offices to Manhattan apartment buildings to schools retrofits in the Midwest, and find out what improvements users might see in the years to come."

A Tale Of Three Boiler Plants

Engineered Systems, Jan. 2016, by Daniel McJacobson.
http://www.esmagazine.com/articles/97513-a-tale-of-three-boiler-plants

"School, warehouse, office building … the boiler stories they tell put the focus back on specific circumstances and smart pre-design study to ensure their systems (and budgets) enjoy the best of times for as long as possible. There is a widely held belief that high efficiency is always best. However, this is not necessarily the case."

Are Chilled Beams Viable in Humid Climates?

Buildings, Jan. 2016, by Daniel Kailey.
http://www.buildings.com/article-details/articleid/19494/title/are-chilled-beams-viable-in-humid-climates-.aspx

"As the effort to improve energy efficiency in buildings increases, many new technologies are under consideration by designers, builders, and owners.  The use of chilled beams, a technology that has been successfully employed to improve energy performance in European buildings for decades, is gaining popularity in the United States. But can this technology be used effectively in the hot, humid environments that much of the U.S. experiences every summer?"

Microsoft Plumbs Ocean’s Depths to Test Underwater Data Center

New York Times, Jan. 31, 2016, by John Markoff.
http://www.nytimes.com/2016/02/01/technology/microsoft-plumbs-oceans-depths-to-test-underwater-data-center.html?_r=0

"Microsoft has tested a prototype of a self-contained data center that can operate hundreds of feet below the surface of the ocean, eliminating one of the technology industry’s most expensive problems: the air-conditioning bill."
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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