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Operating Experience with
Several Energy Efficient Lab Systems
D. Randall Lacey,
PE, and Abigail Krich, Cornell University
Abstract:
Laboratory buildings constructed at a major research university
for the past two decades have included a variety of energy reducing
design features. In most cases operating energy was greater than
expected even with conservation features in place. A recent effort
to "retro-commission" these buildings has provided information
on actual system performance and suggests further refinements. The
lab buildings to be discussed include full VAV hood systems, two-position
systems, and heat recovery. All buildings include digital control
systems that allow data recording and are metered individually for
all utilities. Each fume hood is tested annually with face velocity
measurements and dry ice testing. This data is used to compare these
buildings in terms of energy consumption, peak and average air flow
rates, maintenance experience and fume hood performance. Observed
energy performance is compared to simulated performance for these
system types.
Biography:
D. Randall Lacey, P.E., has a BS degree
in mechanical engineering from Cornell University and a Masters
of Engineering degree also from Cornell. He has 20 years of experience
with laboratory design and project management. This experience
includes design and operation of VAV laboratories, biohazard labs,
animal facilities, GMP drug production, and many other unusual
laboratories. He is currently the University Engineer at Cornell
University and manages a staff of engineers and project managers.
Mr. Lacey has been a member of ASHRAE Technical Committee 9.10
Laboratory Systems since its inception in 1992. He has authored
many papers on laboratory design and operation and was a member
of the ASHRAE Standards Project Committee that revised Standard
110-1995 Method of Testing Laboratory Fume Hoods. His project team
won second place in national competition for the 1997 ASHRAE Technology
Award for the project, "Innovative Ventilation System for
an Animal Anatomy Laboratory."
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