ASHRAE Journal - May 2021 - 4

COMMENTARY
COMMENTARY

180 Technology Parkway
Peachtree Corners, GA 30092
Phone: 404-636-8400
Fax: 404-321-5478 | www.ashrae.org

Everything Changes

DIRECTOR OF ASHRAE PUBLICATIONS & EDUCATION
Mark S. Owen

It will be years before we understand how much the
pandemic has changed the industry. An early change for
ASHRAE was the formation of the Epidemic Task Force in
March 2020. Since then, the COVID-19 resources page on
ASHRAE's website (www.ashrae.org/COVID19) has expanded to include
hundreds of pages of guidance. The guidance has been updated as scientific understanding increased and as circumstances changed.
In January, ASHRAE's Epidemic Task Force published " Core
Recommendations for Reducing Airborne Infectious Aerosol Exposure. "
This one-page document provides a concise summary of the most current task force recommendations. Starting on page 18, a column by task
force members goes through the recommendations and provides the
rationale for each one.

EDITORIAL
Editor
Sarah Foster
sfoster@ashrae.org
Managing Editor
Mary Kate McGowan
mmcgowan@ashrae.org
Assistant Managing Editor
Jeri Alger
jalger@ashrae.org
Associate Editor
Rebecca Matyasovski
rmatyasovski@ashrae.org
Associate Editor
Tani Palefski
tpalefski@ashrae.org
Associate Editor
Chadd Jones
cjones@ashrae.org

RESEARCHERS QUICKLY SWITCHED GEARS during the pandemic to
conduct experiments to provide badly needed answers. A study conducted
last summer evaluated the efficacy of a range of protective measures that
can reduce the probability of COVID-19 infection via the airborne route.
Field experiments were conducted in an actual classroom space
(in pre-COVID-19 and reduced occupant density layouts). Manikins
were set up to " exhale " aerosolized particles consistent with the size of
SARS-CoV-2. The experiments showed that smaller particle sizes may be
distributed more uniformly in the room.
They also tested various types of masks on the manikins, and found that
a three-ply spunbond polypropylene mask had the highest effective filtration rate. For more about what researchers found, see page 10.

PUBLISHING SERVICES
Publishing Services Manager
David Soltis
Production
Jayne Jackson
ADVERTISING
Associate Publisher,
ASHRAE Media Advertising
Greg Martin
gmartin@ashrae.org
Senior Coordinator-Advertising
Production and Operations
Vanessa Johnson
vjohnson@ashrae.org
Coordinator-Circulation Development
Austin Brafford
abrafford@ashrae.org

RESEARCHERS HAD TO CHANGE how they worked to help people
stay safe during the pandemic. But work is changing in many arenas. For
example, emerging technologies, such as augmented reality (AR), are
poised to take their place in the toolkit of HVAC&R professionals. AR can
be used to quickly resolve challenges in design, construction and operations and maintenance processes.
" Proficient use of these tools affords us the ability to eliminate waste
in the solution delivery supply chain. The virtual building can be projected to the physical world to enhance quality, improve flow and reduce
rework, " says ASHRAE President Charles E. Gulledge III, P.E., Fellow
ASHRAE. More about how AR can be used in the industry is on page 22.

ASHRAE OFFICERS
President
Charles E. Gulledge III, P.E.
President-Elect
Michael Schwedler, P.E.
Treasurer
Farooq Mehboob, P.E.
Vice Presidents
Donald L. Brandt
K. William Dean, P.Eng.
William F. McQuade, P.E.
Tim McGinn, P.E.
Secretary & Executive Vice President
Jeff H. Littleton
POLICY GROUP
2020 - 21 Chair
Publications Committee
Hugh D. McMillan III, P.E.

ASHRAE Journal is always open to submissions of abstracts and articles.
E-mail me at sfoster@ashrae.org if you have any questions.
Sarah Foster, ASHRAE Journal Editor

Washington Office
washdc@ashrae.org

Mission Statement: ASHRAE Journal reviews current HVAC&R technology of broad interest through publication of application-oriented articles. ASHRAE
Journal's editorial content ranges from back-to-basics features to reviews of emerging technologies, covering the entire spectrum of professional interest
from design and construction practices to commissioning and the service life of HVAC&R environmental systems.

4

ASHRAE JOURNAL

ashrae.org

M AY 2021


http://www.ashrae.org http://www.ashrae.org/COVID19 http://www.ashrae.org

ASHRAE Journal - May 2021

Table of Contents for the Digital Edition of ASHRAE Journal - May 2021

Contents
ASHRAE Journal - May 2021 - Intro
ASHRAE Journal - May 2021 - Cover1
ASHRAE Journal - May 2021 - Cover2
ASHRAE Journal - May 2021 - 1
ASHRAE Journal - May 2021 - Contents
ASHRAE Journal - May 2021 - 3
ASHRAE Journal - May 2021 - 4
ASHRAE Journal - May 2021 - 5
ASHRAE Journal - May 2021 - 6
ASHRAE Journal - May 2021 - 7
ASHRAE Journal - May 2021 - 8
ASHRAE Journal - May 2021 - 9
ASHRAE Journal - May 2021 - 10
ASHRAE Journal - May 2021 - 11
ASHRAE Journal - May 2021 - 12
ASHRAE Journal - May 2021 - 13
ASHRAE Journal - May 2021 - 14
ASHRAE Journal - May 2021 - 15
ASHRAE Journal - May 2021 - 16
ASHRAE Journal - May 2021 - 17
ASHRAE Journal - May 2021 - 18
ASHRAE Journal - May 2021 - 19
ASHRAE Journal - May 2021 - 20
ASHRAE Journal - May 2021 - 21
ASHRAE Journal - May 2021 - 22
ASHRAE Journal - May 2021 - 23
ASHRAE Journal - May 2021 - 24
ASHRAE Journal - May 2021 - 25
ASHRAE Journal - May 2021 - 26
ASHRAE Journal - May 2021 - 27
ASHRAE Journal - May 2021 - 28
ASHRAE Journal - May 2021 - 29
ASHRAE Journal - May 2021 - 30
ASHRAE Journal - May 2021 - 31
ASHRAE Journal - May 2021 - 32
ASHRAE Journal - May 2021 - 33
ASHRAE Journal - May 2021 - 34
ASHRAE Journal - May 2021 - 35
ASHRAE Journal - May 2021 - 36
ASHRAE Journal - May 2021 - 37
ASHRAE Journal - May 2021 - 38
ASHRAE Journal - May 2021 - 39
ASHRAE Journal - May 2021 - 40
ASHRAE Journal - May 2021 - 41
ASHRAE Journal - May 2021 - 42
ASHRAE Journal - May 2021 - 43
ASHRAE Journal - May 2021 - 44
ASHRAE Journal - May 2021 - 45
ASHRAE Journal - May 2021 - 46
ASHRAE Journal - May 2021 - 47
ASHRAE Journal - May 2021 - 48
ASHRAE Journal - May 2021 - 49
ASHRAE Journal - May 2021 - 50
ASHRAE Journal - May 2021 - 51
ASHRAE Journal - May 2021 - 52
ASHRAE Journal - May 2021 - 53
ASHRAE Journal - May 2021 - 54
ASHRAE Journal - May 2021 - 55
ASHRAE Journal - May 2021 - 56
ASHRAE Journal - May 2021 - 57
ASHRAE Journal - May 2021 - 58
ASHRAE Journal - May 2021 - 59
ASHRAE Journal - May 2021 - 60
ASHRAE Journal - May 2021 - 61
ASHRAE Journal - May 2021 - 62
ASHRAE Journal - May 2021 - 63
ASHRAE Journal - May 2021 - 64
ASHRAE Journal - May 2021 - 65
ASHRAE Journal - May 2021 - 66
ASHRAE Journal - May 2021 - 67
ASHRAE Journal - May 2021 - 68
ASHRAE Journal - May 2021 - 69
ASHRAE Journal - May 2021 - 70
ASHRAE Journal - May 2021 - 71
ASHRAE Journal - May 2021 - 72
ASHRAE Journal - May 2021 - Cover3
ASHRAE Journal - May 2021 - Cover4
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_MCDEBX
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_WNYSQY
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XATVOD
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_FJSHSS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_CCBZDS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XDEFVG
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2023november_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2023november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_VHGNBL
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_WPKBNJ
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_UUVCDE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RTGDEW
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2023
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_LKRFXS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_AZSOFG
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ERCDBH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QWDFRV
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JHGVDF
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OPUYHG
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SREIBM
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_LRTGLK
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OKRFGH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2022november_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2022november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_TZSERA
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_LVRUIX
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RPTVYZ
https://www.nxtbook.com/nxtbooks/ashrae/mini_pub_catalog
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XIYTGD
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2022
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RFGDOB
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_PABXNU
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_REMKLS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_PICVBT
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_AOYTVW
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JQOPLS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_IOYTBC
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SGAJJF
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_IGHYER
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_PDRKLS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2021november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2021november_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_XCODFR
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QSLFGO
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ILKVNM
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2021
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OPDJKD
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_VJKSRY
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SDHUTC
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JPPKRR
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SDLTTH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_CKLLES
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_SLDOX
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_HJETUK
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_OLUHGE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2020october
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2020october_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ZERDGH
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_QVMNEO
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_RTPOKE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_BBATRE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_STUBMW
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_TPEMPE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_JNMKDS
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_FBTTPA
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_WQMMNE
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_TVBRYN
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_showguide2020
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_KTUZMA
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_ABEDGD
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201910
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201909
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2019septmeber_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2019september
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201908
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201907
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201906
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201905
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201904
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2019april
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201903
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2019march
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201902
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201901
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_showguide2019
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2018december
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2018november
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2018fall_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2018fall
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_2018october
https://www.nxtbook.com/nxtbooks/ashrae/ashraemexico_2018
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201810
https://www.nxtbook.com/nxtbooks/ashrae/ashraeinsights_201806
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201805
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201804
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201803
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201712
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201711
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201710
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2017fall_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2017fall
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201709
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201705
https://www.nxtbook.com/nxtbooks/ashrae/ashrae_meetinginsert_201610
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2016fall_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2016fall
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_acrexindia
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2015summer_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_amca_2015summer
https://www.nxtbook.com/nxtbooks/amca/2014summer2
https://www.nxtbook.com/nxtbooks/amca/2014summer
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_acma_2014summer
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201311
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201309
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_acmasupp_2013fall
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201305
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201303
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2013winter
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201211
https://www.nxtbook.com/nxtbooks/ashrae/achr_expo_mexico2012
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201209
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201208_v3
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201208_v2
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2012summer
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201205
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201203
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2012winter
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201111_v2
https://www.nxtbook.com/nxtbooks/ashrae/ashraejournal_201109_v2
https://www.nxtbook.com/nxtbooks/ashrae/pubcatalog_2011summer
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201105
https://www.nxtbook.com/nxtbooks/ashrae/meetingplanner_201103
https://www.nxtbookmedia.com