ASHRAE Journal - November 2023 - 12
IEQ APPLICATIONS
Column
Donald M. Weekes
Recent Trends in
Environmental Health
BY DONALD M. WEEKES, P.ENG., CIH, ASSOCIATE MEMBER ASHRAE
Every year, the ASHRAE Environmental Health Committee (EHC) reviews the field of
environmental health to determine what are the latest trends. Based on the feedback
from the members of EHC, a list of these trends and their impact on the HVAC&R
industry is prepared for a report to be sent to the ASHRAE Technology Council for
their review. In 2023, the recent trends have been suggested by the members of the
Communications and Outreach subcommittee who in turn reviewed the suggestions
and compiled the recommended trends to the full EHC. Additionally, research needs
related to these trends are listed in the report. The Tech Council will take under
advisement what the " Recent Trends " report notes, and these trends will be taken into
account when the Tech Council deliberates on what issues should be emphasized by
ASHRAE as a whole.
Recent Trends
For 2023, the following recent trends in
environmental health were identified by EHC
as likely to have an impact on the mechanical
engineering field.
* Enhanced indoor air quality;
* Increasing use of air cleaners;
* Unvented combustion;
* IEQ as an aspect of resilience;
* Ventilation rates;
* Infectious aerosols;
* Indoor agriculture;
* Temporary indoor environments;
* Climate change; and
* Financial cost/benefit.
12
ASHRAE JOURNAL ashrae.o rg N O V E M B E R 2023
Enhanced Indoor Air Quality
During the pandemic over the last three years, the
demand for better IAQ has been increasing. There has
also been a paradigm shift1 in expectations for IAQ-
toward health/productivity focus, including infection
control outside health-care environments. A need
exists to formulate practical metrics for evaluating
IAQ. Currently our primary ventilation standard,
ANSI/ASHRAE Standard 62.1, Ventilation and Acceptable
Indoor Air Quality, is based on bioeffluents. The new
ASHRAE Standard 241, Control of Infectious Aerosols,
contain many provisions that can lead to improved
and enhanced IAQ. The Recent Trends document also
Donald M. Weekes, P.Eng., CIH, is president of IEQ-GA in Ottawa, ON, Canada.
ASHRAE Journal - November 2023
Table of Contents for the Digital Edition of ASHRAE Journal - November 2023
Table of Contents
ASHRAE Journal - November 2023 - Intro
ASHRAE Journal - November 2023 - Cover1
ASHRAE Journal - November 2023 - Cover2
ASHRAE Journal - November 2023 - 1
ASHRAE Journal - November 2023 - Table of Contents
ASHRAE Journal - November 2023 - 3
ASHRAE Journal - November 2023 - 4
ASHRAE Journal - November 2023 - 5
ASHRAE Journal - November 2023 - 6
ASHRAE Journal - November 2023 - 7
ASHRAE Journal - November 2023 - 8
ASHRAE Journal - November 2023 - 9
ASHRAE Journal - November 2023 - 10
ASHRAE Journal - November 2023 - 11
ASHRAE Journal - November 2023 - 12
ASHRAE Journal - November 2023 - 13
ASHRAE Journal - November 2023 - 14
ASHRAE Journal - November 2023 - 15
ASHRAE Journal - November 2023 - 16
ASHRAE Journal - November 2023 - 17
ASHRAE Journal - November 2023 - 18
ASHRAE Journal - November 2023 - 19
ASHRAE Journal - November 2023 - 20
ASHRAE Journal - November 2023 - 21
ASHRAE Journal - November 2023 - 22
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ASHRAE Journal - November 2023 - 30
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ASHRAE Journal - November 2023 - Cover3
ASHRAE Journal - November 2023 - Cover4
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