Ventilation and Fume Hood Design Considerations for Academia
Gary C. Shaver,
MSPH, CIH, UNC Chapel Hill
The fume hood is recognized as the largest single source of building
energy consumption on campus. On average, laboratory facilities
use 2 to 3 times the power required for the typical classroom or
office building. Besides energy, hood reliability and safety are
critical concerns due to the limitations on building maintenance,
repair and upgrading resources. Further, academic laboratory buildings
are kept in service in excess of 75 years, so the initial building
ventilation design is critical. UNC is on the brink of several large-scale
laboratory construction projects. Decisions now will have major
impacts in the future.
To address energy, ventilation system reliability and safety, two
low flow (~50 fpm face velocity), high performance hoods were considered;
the Lab Crafters' Air Sentry and the Fisher Hamilton Pioneer hoods.
Both hoods were studied for ergonomics and general ease of use.
The combination sash and increased hood depth are new features for
the campus laboratories. Data from the ASHRAE hood testing protocol
provide the benchmark for hood safety performance comparison. Finally,
integration of these hoods into an overall building energy management
system with variable air volume control was reviewed.
Gary Shaver has a BS in biology from Wheaton College and an MSPH
in industrial hygiene from UNC-Chapel Hill. As an industrial hygienist,
he has worked in the environmental, health and safety field for
22 years, both in the University setting and General Industry.
Gary is currently employed by UNC-Chapel Hill in the EHS Department
focusing specifically on design planning and implementation for
new construction and renovation of campus buildings.