Fume Hood Controls and HVAC System Sizing for a New
Scott Sepsy, P.E., Princeton
Russell Campbell, P.E., Campbell Engineering
Princeton University is currently developing contract documents
for a new 260,000 square foot chemistry laboratory. This building
will include teaching and research laboratories, an atrium, auditorium,
and other support spaces. A major focus for the mechanical engineering
team, since the project inception, has been the type, quantity,
and control schemes for the fume hoods and the air systems serving
these hoods. An earlier iteration of this project was previously
described in a poster
session at the Labs21 2006 Annual Conference.
In arriving at the current design scheme, the team has looked at
various hood types on the campus and measured hood usage patterns
with presence detection. Different hood control schemes and diversity
factors, informed by measured usage patterns, were integrated using
life cycle cost analysis. This presentation will review the various
control schemes that were studied and the data collected on the
campus that was used in the design.
These control scheme decisions and allowances for future growth,
operational changes and central utility plant capacity are factored
in to the equipment sizing. Different sizing factors are applied
to different system components due to ease of modification and probabilities
of future changes.
Scott Sepsy, P.E., has
worked at Princeton University since 1986 and been manager of mechanical
engineering since 1992. Prior to that, he worked for five years
at Werden Associates Consulting Engineers in Jenkintown, Pennsylvania.
Scott has been active in ASHRAE since 1982, serving on various local
and society committees. He has worked on a variety of project types
including research laboratories, historical buildings, rare book
archives, food storage facilities, and athletic facilities, to name
a few. He is a registered Professional Engineer in Pennsylvania
and New Jersey.
Russell C. Campbell,
P.E., is the principal of Campbell Engineering & Associates,
with offices in Rochester, New York, and Yardley, Pennsylvania.
He has 27 years of experience as a field engineering and design
specialist in HVAC and mechanical systems and is engaged in providing
investigation, testing, balancing, design, and corrective design
services for laboratory, institutional, industrial, and commercial
facilities. He has worked with Princeton University over the last
27 years on a variety of laboratory and other facilities-related
projects. Mr. Campbell has a degree in mechanical engineering from
the College of New Jersey and is a registered Professional Engineer
in Pennsylvania, New Jersey, and New York.
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