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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


Chilled-Water Piping Condensation Control for Energy Savings and Risk Avoidance

Insulation Outlook, Feb. 2015, by Richard Lubinski.
http://www.insulationoutlook.com/io/article.cfm?id=IO150203

"Proper mechanical insulation of chilled-water piping is critical. The life-cycle cost savings and risk avoidance made possible by insulating chilled-water piping is vital to the design of a high-functioning system. Chilled-water pipe insulation is the wrong place to attempt value engineering when designing new or replacement piping."

Using 4 Waste Heat Sources for HVAC Optimization

Chiller & Cooling Best Practices, Mar. 2015, by Thomas Mort.
http://coolingbestpractices.com/industries/hvac/using-4-waste-heat-sources-hvac-optimization

"Heat recovery opportunities have resulted in the largest amount of savings of our common projects our industrial energy management teams have implemented. It is not the easiest type of project to implement but the amount of savings and the reduction of emissions makes this project very worthwhile."

Case in Point: Symphony Hall Cooling Tower Hits the Right Notes

Engineered Systems, Mar. 2015.
http://www.esmagazine.com/articles/97021-symphony-hall-cooling-tower-hits-the-right-notes

"In an effort to eliminate disruptive airflow noises during performances, the Symphony Hall at The Woodruff Arts Center in Atlanta installed cooling towers designed with the benefit of quieter operation."

ACCA Initiates New Standard On HVAC System Design For Energy Efficient Homes

Air Conditioning Contractors of America (ACCA) Press Release, Mar. 23, 2015.
http://www.acca.org/release/acca-initiates-new-standard-hvac-system-design-energy-efficient-homes/

"The Air Conditioning Contractors of America Educational Institute (ACCA-EI) Standards Task Team (STT) announces the initiation of development of BSR/ACCA 16 Manual E-201x, “HVAC System Design for Energy Efficient Homes” as a new industry standard. This standard will provide procedures to design/select HVAC systems and equipment for low-load homes that will achieve satisfactory indoor conditions with lower equipment capacity; i.e., resolving ventilation and moisture requirements/issues with low air volume systems while addressing occupant comfort, health, and safety."

Faulty Installations Slash System Efficiency [HVAC Equipment]

Air Conditioning, Heating, Refrigeration News, Feb. 9, 2015, by Nicole Krawcke.
http://www.achrnews.com/articles/128787-faulty-installations-slash-system-efficiency

"Duct leakage, refrigerant undercharge or overcharge, low indoor airflow, and oversized equipment with undersized ductwork have the most potential to significantly degrade equipment efficiency, according to a recent National Institute of Standards and Technology (NIST) study. Contractors who adequately address these challenges differentiate themselves from the competition."

Direct link to the NIST Report, Sensitivity Analysis of Installation Faults on Heat Pump Performance, NIST Technical Note 1848, October 2014.

Part One: Radiant Heating and Cooling Systems

ASHRAE Journal, Feb. 2015, by Kwang Woo Kim and Bjarne W. Olsen.
http://bookstore.ashrae.biz/journal/download.php?file=2015Feb_028-039_Olesen_pt-1.pdf

"This two-part article describes basic knowledge of radiant heating and cooling systems to give a principle understanding of the design and operation of this advantageous system including comfort, system load, heating/cooling capacity, installation and application of the system with examples."

Part Two is here - http://www.energy.wsu.edu/EnergyLibrary/Newsbriefs/EnergyNewsbriefsBlog/
tabid/905/entryid/674/Default.aspx



ASHRAE, REHVA Jointly Publish Guide to Chilled Beam Systems

Air Conditioning, Heating, Refrigeration News, Feb. 13, 2015.
http://www.achrnews.com/articles/128835-feb-13-2015-ashrae-rehva-jointly-publish-guide-to-chilled-beam-systems

"ASHRAE and the Federation of European Heating, Ventilation and Air-Conditioning Associations (REHVA) have published guidance on designing chilled beam systems. The Active and Passive Beam Application Design Guide is a collaboration to give system designers a current, authoritative guide on successfully applying active and passive beam technology."

Boiler Design & Selection: What Engineers Should Keep In Mind

Engineered Systems, Feb. 2015, by Mark Avron and Matthew Freeman.
http://www.esmagazine.com/articles/96978-boiler-design-selection-what-engineers-should-keep-in-mind

"In the maze of specification choices, the customer's specific needs should still guide the design. Footprints and retrofits, associated pump/valve costs, and application type all point toward condensing or not, and high- or low-mass equipment. Find your way to long-term performance."

Humidification Options For Commercial Buildings

Engineered Systems, Feb. 2015, by Steven G. Liescheidt.
http://www.esmagazine.com/articles/96977-humidification-options-for-commercial-buildings

"Although industry debate about the research on acceptable humidity levels may continue, there is a growing realization that commercial buildings need some form of humidity control to provide optimum occupant comfort and productivity."

Variable Refrigerant Flow [VRF] Is Evolving

Engineered Systems, Feb. 2015, by Marcia Karr.
http://www.esmagazine.com/articles/96976-vrf-is-evolving

"While mechanical energy codes may lag relative to the efficiency targets of some other codes, the expansion of VRF into a wider range of equipment makes it easier than ever to exceed expectations. Perhaps more importantly, its incorporation into heat pumps, dehumidifiers, compressors, and more represents more flexibility in delivering an effective retrofit without a total system overhaul."

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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