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Energy Newsbriefs Blog

The WSU Energy Program Library prepares this current awareness blog with funding from the U.S. Department of Energy State Energy Program. These articles highlight energy-related news, articles, and reports about energy efficiency, energy conservation, and renewable sources of energy for energy professionals and interested members of the public.

Category: Ventilation

Ventilation


State Of Diffusion: Have Typical Air Distribution Design Habits Gone Stale?

Engineered Systems, May 2017, by Steven G. Liescheidt.
http://www.esmagazine.com/articles/98294-state-of-diffusion-have-typical-air-distribution-design-habits-gone-stale

"After decades of the old terminal velocity standby, it may be time to do away with “We’ve always done it that way.”"

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."

Less Steam, Please: Thermal Power Reduction In Health Care

Engineered Systems, July 2016, by Carl C. Schultz.
http://www.esmagazine.com/articles/97816-less-steam-please-thermal-power-reduction-in-health-care

"It might seem like an odd objective, but the potential efficiency gains are real. And from heat recovery chillers to modified humidification targets so are the opportunities to replace steam production with hot water generation and to manage remaining steam needs more intelligently."

Classroom Ventilation: Meeting Today's Challenges

Engineered Systems, May 2016, by Steven G. Liescheidt.
http://www.esmagazine.com/articles/97718-classroom-ventilation-meeting-todays-challenges

"Budgets, codes, and technologies are constantly shifting and evolving. These days, even the classrooms are often portable. Staying one step ahead will depend on your knowledge of current design options and how to integrate them into the space."

Classroom Ventilation: Meeting Today's Challenges

Engineered Systems, May 2, 2016, by Steven G. Liescheidt.
http://www.esmagazine.com/articles/97718-classroom-ventilation-meeting-todays-challenges

"Budgets, codes, and technologies are constantly shifting and evolving. These days, even the classrooms are often portable. Staying one step ahead will depend on your knowledge of current design options and how to integrate them into the space."

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."

Applying Demand-Controlled Ventilation

ASHRAE Journal, Jan. 2016, by Xingbin Lin and Josephine Lau.
http://tinyurl.com/hhw2kab

"Demand-control ventilation (DCV) provides "automatic reduction of OA intake below design rates when the actual occupancy of spaces served by the system is less than design occupancy."1 CO2 sensing can be used to estimate the strength of occupant-related contaminant sources.2 This type of control approach is called CO2-based DCV. With a single-zone system, the breathing zone CO2 concentration can be used to directly control the outdoor air (OA) damper."

Optimizing Airflows In Foodservice Facilities, Part 2 - Optimizing Exhaust Air

Engineered Systems, Jan. 2016, by Doug Horton.
http://www.esmagazine.com/articles/97511-optimizing-airflows-in-foodservice-facilities-part-2--optimizing-exhaust-air

"Many methods await when it comes to reducing exhaust rates. Fortunately, engineers can avail themselves of multiple tactics, from the hood specification to proper commissioning and air balance."

VAV Terminal Units: Looking Back, Ahead

ASHRAE Journal, Oct. 2015, by Dan Int-Hout and Gus Faris
http://tinyurl.com/pzvcuc5

"July 2015's 'Basics of Well-Mixed Room Air Distribution' described how conditioned air moves throughout a space. In the Fundamentals at Work article, we discuss where the conditioned air comes from by exploring the most predominant products in use today: commercial building variable air volume (VAV) terminal units."

Pacific Northwest Residential Ventilation Effectiveness Study

Northwest Energy Efficiency Alliance, Sept. 14, 2015, by Ken Eklund and others.
http://neea.org/docs/default-source/reports/pacific-northwest-residential-ventilation-effectiveness-study.pdf?sfvrsn=6

"This report presents the findings and conclusions of the Pacific Northwest Residential Ventilation Effectiveness study in houses with low air leakage. The Northwest Energy Efficiency Alliance (NEEA) commissioned the Washington State University (WSU) Energy Program to conduct the study, which included a total of twenty-nine houses in Washington State with five different types of ventilation systems. Exhaust ventilation (Exhaust Only (EO) and Exhaust with Inlet Vents (EI)) and heat recovery ventilation (HRV)/energy recovery ventilation (ERV) systems made up the largest share of the ventilation systems studied."
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