ASHRAE Journal - September 2023 - 24
COLUMN IEQ APPLICATIONS
Conclusion
Hybrid ventilation designs using the
IAQ Procedure to combine mechanical
ventilation and air cleaning merit
further attention in light of Standard
241 and CDC guidance on ventilation
and pressures to reduce ventilation
costs and building carbon emissions.
Using high efficiency particulate
filtration provides additional clean air
with only a small increase in energy
cost; thus, it is the first infection
mitigation action that should be taken
in the cases considered.
TABLE 3 Outdoor air (OA) and particulate filtration impact on operating cost and net metrics of tons of carbon
relative to VRP.
NET METRIC TONS CARBON/100,000 FT2
VENTILATION STRATEGY
ASHRAE STANDARD 62.1-2022
OA+ FILTRATION
VRP + 150%
VRP + 50%
VRP
VRP + Energy Recoverya
IAQPb
IAQPb + Energy Recoverya
$/ft2 TO OPERATE
$/ft2 TO INSTALL
MERV 7 MERV 13 MERV 7 MERV 13
2.09
1.25
0.86
0.40
0.25
0.16
2.12
1.28
0.9
0.43
0.28
0.19
5.47
4.30
3.77
4.89
2.92
3.14
5.47
4.30
3.77
4.90
2.92
3.15
aEnergy recovery efficiency is 60%.
bIAQP with air cleaning efficiency for removal of formaldehyde of 70%.
References
1. CDC. 2023. " Ventilation in Buildings. " U.S.
Centers for Disease Control and Prevention. https://tinyurl.com/
yckr2y5z
2. ASHRAE Standard 241-2023, Control of Infectious Aerosols.
3. enVerid. 2023. " How to Achieve Sustainable Indoor Air Quality:
A Roadmap to Simultaneously Improving Indoor Air Quality &
Meeting Building Decarbonization and Climate Resiliency Goals. "
enVerid. https://tinyurl.com/3rh9cshe
4. Zaatari, M., A. Novoselac, J. Siegel. 2014. " The relationship
between filter pressure drop, indoor air quality, and energy
consumption in rooftop HVAC units. " Building and Environment
73:151 - 161. https://tinyurl.com/3rh9cshe
RELATIVE TO ASHRAE STANDARD 62.1-2022
VRP
MERV 7
190
59
Baseline
(71)
(95)
(109)
MERV 13
195
64
Baseline
(66)
(90)
(104)
Healthy Air.
Healthy School.
Healthy Air.
The Ruskin®
AIRFLOW-IQ series of
products helps reduce virus transmission
in buildings by using precision outside
air velocity and temperature data to
provide healthier indoor air quality.
The AIRFLOW-IQ also helps satisfy the
requirements and recommendations of
ASHRAE 62.1, 90.1 and 189.1, as well as
California Title 24 and the International
Energy Conservation Code (IECC),
by ensuring the minimum ventilation
rate for each occupied space is being
satisfi ed. Combine the AIRFLOW-IQ
with our high-performance Ruskin zone
control products for virus mitigation and
healthier building environments.
Healthy School.
Healthy Air
Healthy School.
ruskin.com
24
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https://tinyurl.com/yckr2y5z
https://tinyurl.com/3rh9cshe
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https://tinyurl.com/3rh9cshe
http://www.ruskin.com
http://www.ashrae.org
ASHRAE Journal - September 2023
Table of Contents for the Digital Edition of ASHRAE Journal - September 2023
Table of contents
ASHRAE Journal - September 2023 - Intro
ASHRAE Journal - September 2023 - Cover1
ASHRAE Journal - September 2023 - Cover2
ASHRAE Journal - September 2023 - 1
ASHRAE Journal - September 2023 - Table of contents
ASHRAE Journal - September 2023 - 3
ASHRAE Journal - September 2023 - 4
ASHRAE Journal - September 2023 - 5
ASHRAE Journal - September 2023 - 6
ASHRAE Journal - September 2023 - 7
ASHRAE Journal - September 2023 - 8
ASHRAE Journal - September 2023 - 9
ASHRAE Journal - September 2023 - 10
ASHRAE Journal - September 2023 - 11
ASHRAE Journal - September 2023 - 12
ASHRAE Journal - September 2023 - 13
ASHRAE Journal - September 2023 - 14
ASHRAE Journal - September 2023 - 15
ASHRAE Journal - September 2023 - 16
ASHRAE Journal - September 2023 - 17
ASHRAE Journal - September 2023 - 18
ASHRAE Journal - September 2023 - 19
ASHRAE Journal - September 2023 - 20
ASHRAE Journal - September 2023 - 21
ASHRAE Journal - September 2023 - 22
ASHRAE Journal - September 2023 - 23
ASHRAE Journal - September 2023 - 24
ASHRAE Journal - September 2023 - 25
ASHRAE Journal - September 2023 - 26
ASHRAE Journal - September 2023 - 27
ASHRAE Journal - September 2023 - 28
ASHRAE Journal - September 2023 - 29
ASHRAE Journal - September 2023 - 30
ASHRAE Journal - September 2023 - 31
ASHRAE Journal - September 2023 - 32
ASHRAE Journal - September 2023 - 33
ASHRAE Journal - September 2023 - 34
ASHRAE Journal - September 2023 - 35
ASHRAE Journal - September 2023 - 36
ASHRAE Journal - September 2023 - 37
ASHRAE Journal - September 2023 - 38
ASHRAE Journal - September 2023 - 39
ASHRAE Journal - September 2023 - 40
ASHRAE Journal - September 2023 - 41
ASHRAE Journal - September 2023 - 42
ASHRAE Journal - September 2023 - 43
ASHRAE Journal - September 2023 - 44
ASHRAE Journal - September 2023 - 45
ASHRAE Journal - September 2023 - 46
ASHRAE Journal - September 2023 - 47
ASHRAE Journal - September 2023 - 48
ASHRAE Journal - September 2023 - 49
ASHRAE Journal - September 2023 - 50
ASHRAE Journal - September 2023 - 51
ASHRAE Journal - September 2023 - 52
ASHRAE Journal - September 2023 - 53
ASHRAE Journal - September 2023 - 54
ASHRAE Journal - September 2023 - 55
ASHRAE Journal - September 2023 - 56
ASHRAE Journal - September 2023 - 57
ASHRAE Journal - September 2023 - 58
ASHRAE Journal - September 2023 - 59
ASHRAE Journal - September 2023 - 60
ASHRAE Journal - September 2023 - 61
ASHRAE Journal - September 2023 - 62
ASHRAE Journal - September 2023 - 63
ASHRAE Journal - September 2023 - 64
ASHRAE Journal - September 2023 - 65
ASHRAE Journal - September 2023 - 66
ASHRAE Journal - September 2023 - 67
ASHRAE Journal - September 2023 - 68
ASHRAE Journal - September 2023 - 69
ASHRAE Journal - September 2023 - 70
ASHRAE Journal - September 2023 - 71
ASHRAE Journal - September 2023 - 72
ASHRAE Journal - September 2023 - Cover3
ASHRAE Journal - September 2023 - Cover4
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