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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


Advanced Heating Technologies for VRF

Construction Specifier, Oct. 2016, by Cain White.
http://www.constructionspecifier.com/advanced-heating-technologies-for-vrf/

"Cold temperatures and disruptive precipitation create problems every year. When it comes to heating spaces, the challenge tends to be how to do 
it effectively and efficiently...Variable refrigerant flow (VRF) makes the most of the square footage and budget while offering energy-efficient and reliable technology providing superior occupant comfort. It achieves success by dividing a building’s interior into zones, each of which can be operated separately."

ASHRAE/IES Publish 2016 Energy Efficiency Standard [ASHRAE 90.1]

ASHRAE News, Oct. 26, 2016, by Jodi Scott.
https://www.ashrae.org/news/2016/ashrae-ies-publish-2016-energy-efficiency-standard

"Numerous energy savings measures resulting from industry input are contained in the newly published energy efficiency standard from ASHRAE and IES. ANSI/ASHRAE/IES Standard 90.1-2016, Energy Efficiency Standard for Buildings Except Low-Rise Residential Buildings, contains 125 addenda published since the 2013 standard. This 2016 version is the 10th edition published since the original standard was first published in 1975 during the energy crisis of the United States."

Know When, Where to Specify VRF Systems

Consulting-Specifying Engineer, Sept. 2016, by James M. Del Monaco.
https://www.csemag.com/industry-news/codes-and-standards-updates/single-article/know-when-where-to-specify-vrf-systems/afe0f6f206f06f553b360c1b00bb694b.html

"Variable refrigerant flow (VRF) offers an alternate HVAC solution. Its key attributes include zonal control, energy efficiency, and indoor air quality (IAQ). To help facilitate their successful design and operation, engineers should take advantage of the available resources and training offered by manufacturers, utilities, and others."

Fan Selections and Their Energy Impacts, Part 1 of 2

HPAC Engineering, Sept. 2016, by Khalil Kairouz and Dale Price.
http://hpac.com/iaq-ventilation/fan-selections-and-their-energy-impacts-part-1-2

"Evaluating fans and fan systems and their impact on operating costs."

Stanford University's "Fourth-Generation" District Energy System

District Energy, 4th Quarter 2016, by Joseph C. Stagner.
http://www.districtenergy-digital.org/districtenergy/2016q4?sub_id=DOwgMT0rNL8TV&folio=19&pg=21#pg21

"In 1987 Stanford took a giant step forward in efficiency and environmental stewardship with the installation of a 50 MW natural gas-fired cogeneration plant to provide electricity, steam and chilled water for its campus. Three decades later, the Cardinal Cogeneration plant has been replaced by the new $468 million Stanford Energy System Innovations (SESI) project...."

Designing With Liquid-Immersion Cooling Systems

Consulting-Specifying Engineer, Sept. 21, 2016, by Saahil Tumber.
http://www.csemag.com/single-article/designing-with-liquid-immersion-cooling-systems/50ef4dcd4e7dee72b8d45e1fa4608abb.html

"Liquid cooling refers to a scenario where liquid (or coolant) must be supplied to the ITE. An IT cabinet is considered to be liquid-cooled if liquid, such as water, dielectric fluid, mineral oil, or refrigerant, is circulated to and from the cabinet or cabinet-mounted equipment for cooling. Several configurations are possible, depending on the boundary being considered (i.e., external or internal to the cabinet). For the same heat-transfer rate, the flow rate requirement for a liquid and the energy consumed by the pump are typically much lower than the flow rate requirement for air and the energy consumed by the fan system. This is primarily because the specific volume of a liquid is significantly lower than that of air."

HVAC Codes and Standards: Cooling and Energy Efficiency

Consulting-Specifying Engineer, Aug. 2016, by Gayle Davis.
http://www.csemag.com/single-article/hvac-codes-and-standards-cooling-and-energy-efficiency/4f684e7f21eada9b13b825014bbfc464.html

"Codes and standards dictate the design of HVAC systems; however, there are ways to improve the design of nonresidential buildings to achieve maximum energy efficiency."

New-Old Refrigerant: Carbon Dioxide for Industrial Refrigeration

ASHRAE Journal, Aug. 2016, by Donald L. Fenton.
http://tinyurl.com/h4r23pt

"CO2 is one of the five natural refrigerants and over the past 20 years has gained popularity, particularly with low-temperature refrigeration for industrial systems."

Premium Power Drive Systems

Heating, Piping, Air Conditioning Engineering, Aug. 2016, by Rob Boteler.
http://hpac.com/motors-drives/premium-power-drive-systems

"Increasingly in industrial and commercial HVAC applications, electric motors are being combined with power converters to form premium power drive systems (PPDS). When used in variable-flow applications, PPDS can deliver savings unmatched by mechanical speed/flow-control systems."

Next Generation Standards: How the National Energy Efficiency Standards Program Can Continue to Drive Energy, Economic, and Environmental Benefits

ACEEE, Aug. 4, 2016, by Andrew deLaski, Joanna Mauer, et. al.
http://aceee.org/sites/default/files/publications/researchreports/a1604.pdf

"Appliance, equipment, and lighting standards have been among the most effective energy efficiency policies, delivering increased savings over multiple rounds of standards for many products. But how much more can be accomplished? What is the potential for additional savings from future standards, specifically for the presidential administration that begins in 2017? This report estimates the savings opportunities from updates to existing standards. We also offer five strategic recommendations for improving the national standards program and further increasing savings."

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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