ASHRAE Journal Supplement - AMCA InMotion - November 2021 - 4

apart in the bulk-storage area (Figure 1b). The warehouse
was modeled with (Figure 1c) and without racks, with
the racks oriented to provide the most benefi cial airfl ow
performance across most aisles. Simulation results are
reported mostly at the whole-warehouse-breathing-zone
horizontal plane (Figure 1d), at the vertical plane crossing
the two LDCF centers (Figure 1e), and inside the working
zone (Figure 1f).
The warehouse was assumed to be located in Chicago.
Simulations using the DOE's EnergyPlus whole-building
energy-modeling program were performed to determine
air and surface temperatures during winter and summer,
respectively.
Name
Liangzhu (Leon) Wang,
PhD, P.Eng.
William P. Bahnfl eth,
PhD, PE
Edward A. Nardell, MD
Title
Associate professor, Department of
Building, Civil, and Environmental
Engineering
Professor, architectural engineering
Chair, ASHRAE Epidemic Task Force
Professor, departments of
Environmental Health and
Immunology and Infectious Diseases
Paul Raftery, PhD
Geoff Sheard, DSc
Professional researcher
President
Pawel Wargocki, PhD
Associate professor, departments
of Civil Engineering and Indoor
Environment
Chair, ASHRAE Epidemic Task Force
Science Applications Committee
INDUSTRY TEAM
Michael Ivanovich
Eddie Boyd
Marc Brandt
Senior director, global affairs
Chief executive offi cer
Director, domestic industrial
Thomas Catania, Esq. Board member
Aaron Gunzner
Mark Stevens
Christian Taber
Mike Wolf, PE
Senior manager, advocacy
Executive director
Principal engineer, codes and
standards
Director, regulatory business
development
AMCA International
Hunter Industrial
Project manager
MacroAir Technologies LDCF performance
LDCF performance
Institute for Energy
Innovation
AMCA International
Big Ass Fans
Greenheck Fan Corp.
TABLE 1. The science and industry teams for AMCA's LDCF research.
4
2021 AMCA inmot ion
www.amca.org
Regulatory communications
Staff liaison
AMCA International Member relations
Warehouse model, LDCF
modeling
Regulatory communications
Scenarios
A variety of arrangements and locations of the packing
line relative to the ceiling fans and workers were simulated
(Figure 2). The U-H-D-3 (packing line directly under
the right-side fan and oriented horizontally, two rows of
workers 0.9 m [3 ft] apart) combination in Figure 2 is the
scenario used for most of the discussion.
Figure 3 shows steady-state airfl ow distribution for
a case of U-H-D-3 at three air speeds exiting the fans
(i.e., average air speeds through the area swept by the
fan blades): 3 m/s (10 fps) (100-percent fan speed) (FS-3),
0.6 m/s (2 fps) (20-percent fan speed) (FS-0.6), and 0 m/s
(0 fps) (fans off) (FS-0). When the fans blow air downward
SCIENCE TEAM
Affi liation
Concordia University
The Pennsylvania State
University
Harvard T.H. Chan
School of Public Health
Jovan Pantelic, PhD Research scientist, building science Well Living Lab Inc.
Center for the Built
Environment, University
of California, Berkeley
AGS Consulting LLC
Technical University of
Denmark
Project role/contribution
Principal investigator
Science-team leader
Infectious diseases and study
of ceiling fans for control of
infectious diseases
Infectious diseases
Ceiling-fan modeling
Computational-fl uid-dynamics
modeling and fan engineering
Indoor-air-quality expertise
http://www.amca.org
ASHRAE Journal Supplement - AMCA InMotion - November 2021

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