a Green Lab without Sacrificing Safety
Phoenix Controls Corporation
HVAC system designers are considering the use of low flow fumehoods
on an increasing number of laboratories today. The desire to take
advantage of the benefits of low flow constant volume can very
easily distract a designer from the most important goal of a laboratory:
A recent trend in the fumehood industry is to use the ASHRAE 110
Standard in a way it was never intended. Hoods are being tested
using 110 to determine the lowest possible face velocity at which
they will "pass", discarding the fact that the most critical
moment for containment is when it is challenged by an occupant.
This misuse of the standard is creating unsafe situations.
Another threat to safety arises out of the use of hoods with restricted
sash openings. This refers to hoods that incorporate sash stops
located much lower than the traditional 18" height. These
impractical sash stops are much more likely to be overridden and
can result in face velocities significantly less than 40 FPM with
a fully opened sash, a scenario for which higher face velocities
Saving energy in laboratories is an important goal, but it must
not sacrifice the primary goal of creating a safe environment.
This presentation will present several control approaches that
will help maximum energy savings while not compromising safety.
Christopher S. Robertson, Phoenix Controls
Corporation, is the Vice President, Worldwide Sales & Marketing
responsible for the companies' worldwide sales & marketing
operations. Prior to assuming this responsibility he spent two
years in Japan where he was the Director of Asia/Pacific in charge
of developing and running the company's business unit throughout
Asia and the Pacific Rim. He has also serviced as the Manager,
Laboratory and Heath Care Markets, responsible for overall direction,
development, and implementation of strategies and products directed
towards the laboratory and health care markets worldwide. He has
been a featured speaker on airflow control issues at many national
and international conferences and seminars. He is a Member of ASHRAE
and is active on Laboratory Committee TC 9.10, Clean Spaces Committee
TC 9.11 and Standards Committee SPC 110 (Testing Performance of
Laboratory Fume Hoods)
His background includes eight years with Phoenix Controls in various
sales and marketing roles and ten years with Johnson Controls as
an Applications Engineer, Sales Engineer and Sales Manager. He
holds a B.S. in Electrical Engineering from Marquette University.