Systems to Minimize Energy Costs While Maintaining Acceptable Air
Dr. Ron Petersen,
Cermak Peterka Petersen, Inc.
An important element of laboratory design, especially one that
obtains the "green" designation, is the quality of the
indoor environment. An important aspect of the indoor environment
is the potential impact of pollutants exiting laboratory stacks
that subsequently reenter the building through air intakes, operable
windows or entrances. To ensure acceptable air quality at these
locations numerical and/or wind tunnel modeling techniques are
employed to estimate the minimum acceptable stack height, volume
flow and exhaust velocity required to achieve the specified air
quality design criterion. The more restrictive the air quality
design criterion the larger these parameters become. Since stack
heights are usually fixed at a some low height, the volume flow
and exhaust velocity are often increased using entrained air systems
or larger conventional fans to meet the air quality design criterion.
The larger horsepower fans needed to achieve the higher flows and
velocities have a direct impact on day-to-day energy costs.
This presentation will discuss the relationship between the air
quality design criterion, the fan size/type specification and annual
energy costs. Examples from recent projects for the CDC and various
university laboratories will be presented showing how initial fan
size specifications could be reduced to save energy costs while
at the same time meet the air quality design criterion.
Dr. Ron Petersen has a B.S. in mathematics
from the South Dakota School of Mines and Technology, an M.S. in
Atmospheric Science from the South Dakota School of Mines and Technology
and a Ph.D. in Civil Engineering (Specialty in Wind Engineering)
from Colorado State University. Dr. Petersen is a Vice President
and Principal at Cermak Peterka Petersen, Inc. (CPP), a firm that
specializes in providing design information to account for the
effect of wind on man and his environment. One of the areas that
Dr. Petersen specializes in is providing design information for
new and existing laboratories or hospitals so that the air quality
impact of building exhausts can be minimized at nearby air intakes
and other sensitive locations (i.e., operable windows, entrances,
plazas, walkways, etc.). Some of the projects he has worked on
include CDC Building 110, Cornell's Duffield Hall, National Institutes
of Health Clinical Research Center, the UCLA Westwood Replacement
Hospital, M.D. Anderson Cancer Research Center in Houston and the
Fred Hutchinson Cancer Research Center in Seattle.
Dr. Petersen is also actively involved in several professional
organizations to include AMS, ASHRAE, A&WMA, ISPE and AIHA.
In 1996, Dr. Petersen was the program chairman for the Ninth Joint
Conference on Air Pollution Meteorology and in 2000 helped coordinate
and provide comments on behalf of the Air & Waste Management
Association's meteorology committee for presentation at the 7TH
EPA Modeling Conference regarding revisions to EPA's "Guideline
on Air Quality Modeling." He has also served or is serving
on committees related to pollutant dispersion and fume reentry
for ASHRAE, AMS and A&WMA. Dr. Petersen has also presented
a short course on fume reentry for the AIHA. He has authored or
coauthored more than 300 papers and technical reports including
technical papers regarding minimizing pollutant reentry into buildings
to include a recent paper in the ASHRAE Journal.