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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


Part Two: Radiant Heating and Cooling Systems

ASHRAE Journal, Mar. 2015, by Kwang Woo Kim and Bjarne W. Olesen.
http://bookstore.ashrae.biz/journal/download.php?file=2015Mar_034-043_Olesen-pt.2.pdf

"Control of the heating and cooling system needs to be able to maintain the indoor temperatures within the comfort range under the varying internal loads and external climates. To maintain a stable thermal environment, the control system needs to maintain the balance between the heat gain/loss of the building and the supplied energy from the system."

Part One is here - http://www.energy.wsu.edu/EnergyLibrary/Newsbriefs/EnergyNewsbriefsBlog/
tabid/905/entryid/606/Default.aspx

Energy-Efficient Makeup Air Units

ASHRAE Journal, Mar. 2015, by Hugh Crowther.
http://bookstore.ashrae.biz/journal/download.php?file=2015Mar_026-033_Crowther.pdf

"Unless you live in paradise, delivering makeup air to most buildings is expensive. Table 1 shows the amount of work it takes to heat and cool air (based on Chicago conditions) for a standard rooftop unit (a unit that recirculates air with typical air conditioning loads) and a makeup air (MUA) unit."

LCCA for HVAC Systems

Consulting-Specifying Engineer, Mar. 2015, by David J. MacKay and Kohler Ronan.
http://www.csemag.com/single-article/lcca-for-hvac-systems/04e8a9c9fa723b70ef0b48829cb9b620.html

"Practically speaking, there are multiple building design options that can meet programmatic needs and achieve acceptable levels of performance. From a purely financial perspective, the only appropriate design alternative is the solution that satisfies the owner's project requirements for the lowest total cost of ownership. Lifecycle cost analysis (LCCA) is a powerful tool used to determine the most cost-effective option among competing alternatives. Although LCCA has been used for decades to reliably identify cost-optimal design solutions, many building owners and architecture and engineering professionals still rely on simple payback to make project investment decisions."

2015 ASHRAE Technology Awards: Energy Efficient Ice Rink

ASHRAE Journal, Mar. 2015, by Art Sutherland.
http://bookstore.ashrae.biz/journal/download.php?file=2015Mar_078-087_TechAward_Sutherland.pdf

"An extensive study conducted by Natural Resources Canada determined that a typical 40,000 ft2 (3716 m2) ice rink in Canada will consume an average of 1.5 million kWh of equivalent energy per year. The Westhills Recreation Centre in Langford, British Columbia, is nearly twice as big uses only 768,000 kWh. And, the refrigeration system for the ice surfaces produces so much waste heat that excess is shared with a nearby housing development."

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


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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