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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: Ventilation

Ventilation


Energy Impacts of Laboratory Ventilation Methods

Heating/Piping/Air Conditioning Engineering, Feb. 2015, by Victoria Herman and others.
http://hpac.com/iaq-ventilation/energy-impacts-laboratory-ventilation-methods?page=1

"Laboratory ventilation method—fixed percentage offset or fixed flow per door—has little effect on overall energy consumption compared with other design variables."

Demand-Controlled Ventilation

Engineered Systems, Jan. 2015, by Paul Ehrlich.
http://www.esmagazine.com/articles/96931-demand-controlled-ventilation

"The right design strategy can lead to safe, more efficient environments."

[ASHRAE] 90.1 and Designing High Performance Commercial Kitchen Ventilation Systems

ASHRAE Journal, Nov. 2014, by Don Fisher.
http://bookstore.ashrae.biz/journal/download.php?file=2014Nov_012-025_Fisher.pdf

"...regardless of the limits to energy efficiency, ASHRAE through its technical committees and industry support has moved the North American CKV design world from the dark ages to the front-of-the-pack. Furthermore, the inclusion of commercial kitchen ventilation within Standard 90.1 has caught the attention of the HVAC design community. We believe that the CKV system design has taken a positive step forward as a result of the Standard 90.1 initiative. Provided the designer understands the implications, limits and subtleties of the best practice options, one can cost-effectively increase the energy efficiency of CKV systems in concert with improving thermal comfort in the kitchen."

Choosing a Whole-House Ventilation Strategy (Pt. 2)

Journal of Light Construction, Oct. 2014, by Allison Bailes.
http://www.jlconline.com/ventilation/choosing-a-whole-house-ventilation-strategy_o.aspx

"An update on current standards and how to meet them."

Variable Volume DOAS Fan-Powered Terminal Unit

ASHRAE Journal, Aug. 2014, by Dan Int-Hout. [Choose Download or Save.]
http://bookstore.ashrae.biz/journal/download.php?file=2014Aug_070-073_HVACapps_Int-Hout.pdf

"Today’s design engineers face a series of complex decisions in an effort to reduce energy consumption and maintain comfort, all while meeting a variety of codes and standards. One option that seems to satisfy all these requirements is a DOAS [dedicated outdoor air system] fan-powered terminal unit. Its combination of a variable speed ECM fan, large sensible cooling coil, and small DOAS primary air valve allows for the widest possible range of operational strategies that both minimize energy and maximize ventilation control."


Energy Efficiency Can Negatively Impact Public Health

Scientific American - Plugged In Blog, Sep. 10, 2014, by Melissa C. Lott.
http://blogs.scientificamerican.com/plugged-in/2014/09/10/energy-efficiency-can-have-negative-impacts-on-public-health/

"Some energy efficiency improvements could cost lives by increasing indoor radon exposure and the resulting risk of developing lung cancer.  According to an article in the British Medical Journal, energy efficiency improvements could reduce home energy use and greenhouse gas emissions (which could lead to many health benefits). But, improvements that decrease air exchange rates lead to elevated exposure to indoor pollutants, including radon."

At the Tipping Point of Airtightness

Home Energy, Sep./Oct. 2014, by Max Sherman. [Scroll to page 12.]
http://www.omagdigital.com/publication/index.php?i=0&m=15729&l=1&p=3&pre=

Looks at the history of residential air tightness, air infiltration, and indoor air quality and the evolution of testing and measuring.

Air Barriers: Expectations vs. Reality

Environmental Design & Construction (EDC), May 2014, by Richard Scott and Donald B. Snell. (Requires free registration to view full-text.)
http://www.edcmag.com/articles/95601-air-barriers-expectations-vs-reality?v=preview

"Air barriers are expected to be beneficial to owners of green buildings, but improper specification and installation can cause problems." Includes a chart that compares air barrier standards.


Balancing Home-Performance Demands with Ventilation Needs

Air Conditioning, Heating & Refrigeration News, Apr. 21, 2014, by Jen Anesi.
http://www.achrnews.com/articles/126433-balancing-home-performance-demands-with-ventilation-needs

"While new homes are being built tighter than ever, more and more contractors are helping their customers identify and rectify sources of energy loss in their homes, ensuring future energy savings and comfort for homeowners. But, as contractors seal up these homes, they also need to consider proper ventilation, avoid common mistakes, and follow industry protocols to ensure occupant health and safety."

Current Trends for Health-Care Ventilation

ASHRAE Journal, Apr. 2014.
http://tinyurl.com/p5b8gah

"Health-care design evolves constantly, reflecting improvements and advancements in surgical techniques, equipment (such as MRIs and robotic surgical equipment), clinical practices, hospital design trends, energy efficiency, sustainable design, and other factors. Ventilation for health-care facilities must change to be aligned with the changing needs of health-care facilities design, patients, surgeons, clinical staff, and visitors."
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