Sustainable Strategies
Optimize Ventilation Requirements

This includes integrated consideration of room air change rates, fume hood exhaust alternatives, and fume hood sash management.

In the Labs21 Design Guide, see the following topics:
- Room air change rates
- Impact of fume hood diversity and face velocity
- Glove boxes and biological safety cabinets as alternatives to fume hoods
- Mini environments to reduce laboratory ventilation load
- Sash management training

Also see these related codes and standards:
- California code on fume hood face velocity
- Ventilation standards from ACGIH, OSHA and ANSI

See these Labs21 Conference Presentations for more information on the following topics:
- Use of CFD modeling to optimize room air change rates in a university laboratory (phone forum presentation)
- Use of CFD modeling to optimize room air change rates in a pharmaceutical laboratory.

These Labs21 Case Studies implement this strategy:
- Fred Hutchinson Cancer Research Center changed min air change rate from 10 ACH to 6 ACH (occupied) and 4 ACH (unoccupied). (pg. 5, 6)
- The Georgia Public Health laboratory changed from 10 ACH to 6 ACH for BSL-2 labs (pg. 6)
- The Whitehead Building reduced vivarium air change rates by using ventilated cages (pg.5)
- The Labs21 Energy Analysis Study has data on the energy impact of different ventilation rates (section 2.1)

See the Frequently Asked Questions (FAQ) list






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