Tradeoffs among indoor air quality, financial costs, and CO2 emissions for HVAC operation strategies to mitigate indoor virus in U.S. office buildings
Abstract
Adapting building operation during the COVID-19 pandemic to improve indoor air quality (IAQ) while ensuring sustainable solutions in terms of costs and CO2 emissions is challenging and limited in literature. Our previous study investigated different HVAC operation strategies, including increased filtration using MERV 10, MERV 13, or HEPA filters, as well as supplying 100% outdoor air into buildings for a system initially sized for MERV 10 filtration. This paper significantly extends that research by systematically analyzing the potential financial and environmental impact for different locations in the U.S. The previous medium office building system model is improved to account for operation in different climates. New evaluation metrics are created to consider the comprehensive impact of improving IAQ on costs and CO2 emissions, using dynamic emission factors for electricity generation depending on the location. HVAC operation strategies are studied in five different locations across the United States, with distinct climates and electricity sources. In four of the five locations, MERV 13 filtration offers the best improvement in IAQ per increase in costs and emissions relative to MERV 10. The exception is the mildest climate of San Diego, where use of 100% outdoor air provides the best IAQ with a limited increasemore »
- Authors:
-
- Univ. of Colorado, Boulder, CO (United States)
- Pennsylvania State Univ., University Park, PA (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE); Defense Threat Reduction Agency (DTRA); National Science Foundation (NSF)
- OSTI Identifier:
- 1884804
- Alternate Identifier(s):
- OSTI ID: 1874091
- Report Number(s):
- NREL/JA-5500-83853
Journal ID: ISSN 0360-1323; MainId:84626;UUID:f0b53039-4d1c-4ea3-8b99-92bd41fdbaae;MainAdminID:65240
- Grant/Contract Number:
- AC36-08GO28308; AC02-05CH11231; CBET-2217410
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Building and Environment
- Additional Journal Information:
- Journal Volume: 221; Journal ID: ISSN 0360-1323
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 29 ENERGY PLANNING, POLICY, AND ECONOMY; 60 APPLIED LIFE SCIENCES; climate change; CO2 emissions; COVID-19 pandemic; financial cost; indoor air quality
Citation Formats
Faulkner, Cary A., Castellini, Jr., John E., Lou, Yingli, Zuo, Wangda, Lorenzetti, David M., and Sohn, Michael D. Tradeoffs among indoor air quality, financial costs, and CO2 emissions for HVAC operation strategies to mitigate indoor virus in U.S. office buildings. United States: N. p., 2022.
Web. doi:10.1016/j.buildenv.2022.109282.
Faulkner, Cary A., Castellini, Jr., John E., Lou, Yingli, Zuo, Wangda, Lorenzetti, David M., & Sohn, Michael D. Tradeoffs among indoor air quality, financial costs, and CO2 emissions for HVAC operation strategies to mitigate indoor virus in U.S. office buildings. United States. https://doi.org/10.1016/j.buildenv.2022.109282
Faulkner, Cary A., Castellini, Jr., John E., Lou, Yingli, Zuo, Wangda, Lorenzetti, David M., and Sohn, Michael D. Thu .
"Tradeoffs among indoor air quality, financial costs, and CO2 emissions for HVAC operation strategies to mitigate indoor virus in U.S. office buildings". United States. https://doi.org/10.1016/j.buildenv.2022.109282. https://www.osti.gov/servlets/purl/1884804.
@article{osti_1884804,
title = {Tradeoffs among indoor air quality, financial costs, and CO2 emissions for HVAC operation strategies to mitigate indoor virus in U.S. office buildings},
author = {Faulkner, Cary A. and Castellini, Jr., John E. and Lou, Yingli and Zuo, Wangda and Lorenzetti, David M. and Sohn, Michael D.},
abstractNote = {Adapting building operation during the COVID-19 pandemic to improve indoor air quality (IAQ) while ensuring sustainable solutions in terms of costs and CO2 emissions is challenging and limited in literature. Our previous study investigated different HVAC operation strategies, including increased filtration using MERV 10, MERV 13, or HEPA filters, as well as supplying 100% outdoor air into buildings for a system initially sized for MERV 10 filtration. This paper significantly extends that research by systematically analyzing the potential financial and environmental impact for different locations in the U.S. The previous medium office building system model is improved to account for operation in different climates. New evaluation metrics are created to consider the comprehensive impact of improving IAQ on costs and CO2 emissions, using dynamic emission factors for electricity generation depending on the location. HVAC operation strategies are studied in five different locations across the United States, with distinct climates and electricity sources. In four of the five locations, MERV 13 filtration offers the best improvement in IAQ per increase in costs and emissions relative to MERV 10. The exception is the mildest climate of San Diego, where use of 100% outdoor air provides the best IAQ with a limited increase in costs and emissions. Finally, a system not sized for HEPA filtration can lead to increased costs and emissions without much improvement in IAQ.},
doi = {10.1016/j.buildenv.2022.109282},
journal = {Building and Environment},
number = ,
volume = 221,
place = {United States},
year = {Thu Jun 16 00:00:00 EDT 2022},
month = {Thu Jun 16 00:00:00 EDT 2022}
}
Works referenced in this record:
A comparative life-cycle assessment of hydro-, nuclear and wind power: A China study
journal, September 2019
- Wang, Like; Wang, Yuan; Du, Huibin
- Applied Energy, Vol. 249
A systematic approach to estimating the effectiveness of multi-scale IAQ strategies for reducing the risk of airborne infection of SARS-CoV-2
journal, August 2021
- Shen, Jialei; Kong, Meng; Dong, Bing
- Building and Environment, Vol. 200
Comparison of Test Methods for Determining the Particle Removal Efficiency of Filters in Residential and Light-Commercial Central HVAC Systems
journal, May 2012
- Stephens, Brent; Siegel, Jeffrey A.
- Aerosol Science and Technology, Vol. 46, Issue 5
Estimation of airborne viral emission: Quanta emission rate of SARS-CoV-2 for infection risk assessment
journal, August 2020
- Buonanno, G.; Stabile, L.; Morawska, L.
- Environment International, Vol. 141
Investigation of HVAC operation strategies for office buildings during COVID-19 pandemic
journal, January 2022
- Faulkner, Cary A.; Castellini, John E.; Zuo, Wangda
- Building and Environment, Vol. 207
Optimal control of high-rise building mechanical ventilation system for achieving low risk of COVID-19 transmission and ventilative cooling
journal, November 2021
- Sha, Haohan; Zhang, Xin; Qi, Dahai
- Sustainable Cities and Society, Vol. 74
HVAC filtration for controlling infectious airborne disease transmission in indoor environments: Predicting risk reductions and operational costs
journal, December 2013
- Azimi, Parham; Stephens, Brent
- Building and Environment, Vol. 70
COVID-19: The impact in US high-rise office buildings energy efficiency
journal, October 2021
- Cortiços, Nuno D.; Duarte, Carlos C.
- Energy and Buildings, Vol. 249
High indoor CO2concentrations in an office environment increases the transcutaneous CO2level and sleepiness during cognitive work
journal, January 2016
- Vehviläinen, Tommi; Lindholm, Harri; Rintamäki, Hannu
- Journal of Occupational and Environmental Hygiene, Vol. 13, Issue 1
Size dependent infectivity of SARS-CoV-2 via respiratory droplets spread through central ventilation systems
journal, March 2022
- Pease, Leonard F.; Salsbury, Timothy I.; Anderson, Kevin
- International Communications in Heat and Mass Transfer, Vol. 132
Indoor transmission of SARS‐CoV‐2
journal, November 2020
- Qian, Hua; Miao, Te; Liu, Li
- Indoor Air, Vol. 31, Issue 3
The effect of building retrofit measures on CO2 emission reduction – A case study with U.S. medium office buildings
journal, December 2021
- Lou, Yingli; Yang, Yizhi; Ye, Yunyang
- Energy and Buildings, Vol. 253
Experimental evaluation of respiratory droplet spread to rooms connected by a central ventilation system
journal, January 2022
- Vlachokostas, Alex; Burns, Carolyn A.; Salsbury, Timothy I.
- Indoor Air, Vol. 32, Issue 1
The relationship between filter pressure drop, indoor air quality, and energy consumption in rooftop HVAC units
journal, March 2014
- Zaatari, Marwa; Novoselac, Atila; Siegel, Jeffrey
- Building and Environment, Vol. 73
Impact of ventilation and filtration strategies on energy consumption and exposures in retail stores
journal, May 2016
- Zaatari, Marwa; Novoselac, Atila; Siegel, Jeffrey
- Building and Environment, Vol. 100
Quantitative assessment of the risk of airborne transmission of SARS-CoV-2 infection: Prospective and retrospective applications
journal, December 2020
- Buonanno, G.; Morawska, L.; Stabile, L.
- Environment International, Vol. 145
High energy efficiency ventilation to limit COVID-19 contagion in school environments
journal, June 2021
- Schibuola, Luigi; Tambani, Chiara
- Energy and Buildings, Vol. 240
Modelica Buildings library
journal, March 2013
- Wetter, Michael; Zuo, Wangda; Nouidui, Thierry S.
- Journal of Building Performance Simulation, Vol. 7, Issue 4
Energy vs. ventilation rate in buildings: A comprehensive scenario-based assessment in the European context
journal, November 2012
- Santos, Hugo R. R.; Leal, Vítor M. S.
- Energy and Buildings, Vol. 54
Investigation of potential aerosol transmission and infectivity of SARS-CoV-2 through central ventilation systems
journal, June 2021
- Pease, Leonard F.; Wang, Na; Salsbury, Timothy I.
- Building and Environment, Vol. 197
Interplay of ventilation and filtration: Differential analysis of cost function combining energy use and indoor exposure to PM 2.5 and ozone
journal, January 2018
- Ben-David, Tom; Waring, Michael S.
- Building and Environment, Vol. 128
Long-term carbon emission reduction potential of building retrofits with dynamically changing electricity emission factors
journal, February 2022
- Lou, Yingli; Ye, Yunyang; Yang, Yizhi
- Building and Environment, Vol. 210
Assessing the use of portable air cleaners for reducing exposure to airborne diseases in a conference room with thermal stratification
journal, January 2022
- Castellini, John E.; Faulkner, Cary A.; Zuo, Wangda
- Building and Environment, Vol. 207
Data fusion of mobile and environmental sensing devices to understand the effect of the indoor environment on measured and self-reported sleep quality
journal, April 2022
- Fritz, Hagen; Kinney, Kerry A.; Wu, Congyu
- Building and Environment, Vol. 214
COVID-19 Outbreak Associated with Air Conditioning in Restaurant, Guangzhou, China, 2020
journal, July 2020
- Lu, Jianyun; Gu, Jieni; Li, Kuibiao
- Emerging Infectious Diseases, Vol. 26, Issue 7
Evolution of pressure drop across electrospun nanofiber filters clogged by solid particles and its influence on indoor particulate air pollution control
journal, January 2021
- Xia, Tongling; Chen, Chun
- Journal of Hazardous Materials, Vol. 402
COVID-19 Outbreak Among Attendees of an Exercise Facility — Chicago, Illinois, August–September 2020
journal, March 2021
- Lendacki, Frances R.; Teran, Richard A.; Gretsch, Stephanie
- MMWR. Morbidity and Mortality Weekly Report, Vol. 70, Issue 9