ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 24
unaffected. When the door was open 25 percent of the
time, indoor PM2.5 concentrations were reduced by 54.0
percent, from a maximum of 658 μg/m³ with the air curtain
off to a maximum of 303 μg/m³ with the air curtain on.
With the door open 50 percent of the time, indoor PM2.5
concentrations were reduced by 54.4 percent, from a
maximum of 1,005 μg/m³ with the air curtain off to a
maximum of 458 μg/m³ with the air curtain on.
While the testing involved particulate levels higher
than those expected in most real-life scenarios, the
consistency in percent reduction is indicative of the positive
health impacts of air curtains in the fi eld, as even a
Door Open 25% of Time, Air Curtain Off
1600
1400
1200
1000
800
600
400
200
45
45
Time (min)
Door Open 50% of Time, Air Curtain Off
2000
000
1500
15
Outside
much lower (e.g., 20 percent) reduction can amount to a
signifi cant health benefi t. With evidence of the harmful
effects of airborne particulates continuing to emerge
and nearly 6.7 million deaths worldwide a year attributed
to the cumulative effects of air pollution,13 every
little bit helps.
Conclusion
In this time of increased public interest in IAQ, building
owners and managers would do well to consider all of
their options. Empirical tests are demonstrating that better
IAQ is attainable with a far less than capital investment.
Door Open 25% of Time, Air Curtain High
Outside
Inside
1600
1400
1200
1000
800
600
400
200
90
90
45
45
Time (min)
Door Open 50% of Time, Air Curtain High
2000
1500
15
Outside
1000
000
Inside
50050
50050
Inside
45
Time (min)
FIGURE 2. Particulate levels, wildfi re simulation.
24
2023 AMCA inmot ion
www.amca.org
90
90
45
45
Time (min)
90
90
1000
000
Outside
Inside
90
90
PM2.5 (μg/m3
)
PM2.5 (μg/m3
)
PM2.5 (μg/m3
)
PM2.5 (μg/m3
)
http://www.amca.org
ASHRAE Journal Supplement - AMCA InMotion - November 2023
Table of Contents for the Digital Edition of ASHRAE Journal Supplement - AMCA InMotion - November 2023
Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - BB1
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - BB2
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover1
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover2
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Contents
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 2
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 3
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 4
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 5
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 6
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 7
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 8
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 9
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 10
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 11
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 12
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 13
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 14
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 15
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 16
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 17
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 18
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 19
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 20
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 21
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 22
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 23
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 24
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 25
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 26
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 27
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 28
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 29
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 30
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 31
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 32
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 33
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 34
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 35
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - 36
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover3
ASHRAE Journal Supplement - AMCA InMotion - November 2023 - Cover4
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