A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mechanical ventilation and indoor air quality in recently constructed U.S. homes in marine and cold-dry climates
https://orcid.org/0000-0003-4594-3822
https://orcid.org/0000-0002-2289-8742
https://orcid.org/0000-0002-0802-0431
https://orcid.org/0000-0001-9667-1797
https://orcid.org/0000-0001-5665-4343
Abstract Data were collected to characterize whole-house mechanical ventilation (WHMV) and indoor air quality (IAQ) in 55 homes in the Marine climate of Oregon and the Cold-Dry climate of Colorado in the U.S. Sixteen homes were monitored for two weeks, with and without WHMV operating. Ventilation airflows; airtightness; time-resolved CO2, PM2.5 and radon; and time-integrated NO2, NOX and formaldehyde were measured. Participants provided information about IAQ-impacting activities, perceptions and ventilation use. All homes had operational cooktop ventilation and bathroom exhaust. Thirty homes had equipment that could meet the ASHRAE 62.2–2010 standard with continuous or controlled runtime and 34 had some WHMV operating as found. Thirty-five of 46 participants with WHMV reported they did not know how to operate it, and only half of the systems were properly labeled. Two-week homes had lower formaldehyde, radon, CO2 and NO (NOX-NO2) when operated with WHMV, and had faster PM2.5 decays following indoor emission events. Overall IAQ satisfaction was similar in Oregon and Colorado, but more Colorado participants (19% vs 3%) felt their IAQ could be improved and more reported dryness as a problem (58% vs. 14%). The collected data indicate that there are benefits of operating WHMV, even when continuous use may not be needed because outdoor pollutant concentrations are low and indoor sources do not present substantial challenges.
Highlights Whole-house mechanical ventilation (WHMV) and IAQ characterized in 55 homes; 16 with/out WHMV. 31 of 42 had WHMV airflow that complied with ASHRAE 62.2–2010 >50% of WMHV systems not labeled; few occupants knew how to operate them. Formaldehyde, radon, CO2 and NO lower in homes with WHMV running. Faster PM2.5 decay rates after indoor emission events in homes with WHMV running.
Mechanical ventilation and indoor air quality in recently constructed U.S. homes in marine and cold-dry climates
https://orcid.org/0000-0003-4594-3822
https://orcid.org/0000-0002-2289-8742
https://orcid.org/0000-0002-0802-0431
https://orcid.org/0000-0001-9667-1797
https://orcid.org/0000-0001-5665-4343
Abstract Data were collected to characterize whole-house mechanical ventilation (WHMV) and indoor air quality (IAQ) in 55 homes in the Marine climate of Oregon and the Cold-Dry climate of Colorado in the U.S. Sixteen homes were monitored for two weeks, with and without WHMV operating. Ventilation airflows; airtightness; time-resolved CO2, PM2.5 and radon; and time-integrated NO2, NOX and formaldehyde were measured. Participants provided information about IAQ-impacting activities, perceptions and ventilation use. All homes had operational cooktop ventilation and bathroom exhaust. Thirty homes had equipment that could meet the ASHRAE 62.2–2010 standard with continuous or controlled runtime and 34 had some WHMV operating as found. Thirty-five of 46 participants with WHMV reported they did not know how to operate it, and only half of the systems were properly labeled. Two-week homes had lower formaldehyde, radon, CO2 and NO (NOX-NO2) when operated with WHMV, and had faster PM2.5 decays following indoor emission events. Overall IAQ satisfaction was similar in Oregon and Colorado, but more Colorado participants (19% vs 3%) felt their IAQ could be improved and more reported dryness as a problem (58% vs. 14%). The collected data indicate that there are benefits of operating WHMV, even when continuous use may not be needed because outdoor pollutant concentrations are low and indoor sources do not present substantial challenges.
Highlights Whole-house mechanical ventilation (WHMV) and IAQ characterized in 55 homes; 16 with/out WHMV. 31 of 42 had WHMV airflow that complied with ASHRAE 62.2–2010 >50% of WMHV systems not labeled; few occupants knew how to operate them. Formaldehyde, radon, CO2 and NO lower in homes with WHMV running. Faster PM2.5 decay rates after indoor emission events in homes with WHMV running.
Mechanical ventilation and indoor air quality in recently constructed U.S. homes in marine and cold-dry climates
https://orcid.org/0000-0003-4594-3822
https://orcid.org/0000-0002-2289-8742
https://orcid.org/0000-0002-0802-0431
https://orcid.org/0000-0001-9667-1797
https://orcid.org/0000-0001-5665-4343
Abstract Data were collected to characterize whole-house mechanical ventilation (WHMV) and indoor air quality (IAQ) in 55 homes in the Marine climate of Oregon and the Cold-Dry climate of Colorado in the U.S. Sixteen homes were monitored for two weeks, with and without WHMV operating. Ventilation airflows; airtightness; time-resolved CO2, PM2.5 and radon; and time-integrated NO2, NOX and formaldehyde were measured. Participants provided information about IAQ-impacting activities, perceptions and ventilation use. All homes had operational cooktop ventilation and bathroom exhaust. Thirty homes had equipment that could meet the ASHRAE 62.2–2010 standard with continuous or controlled runtime and 34 had some WHMV operating as found. Thirty-five of 46 participants with WHMV reported they did not know how to operate it, and only half of the systems were properly labeled. Two-week homes had lower formaldehyde, radon, CO2 and NO (NOX-NO2) when operated with WHMV, and had faster PM2.5 decays following indoor emission events. Overall IAQ satisfaction was similar in Oregon and Colorado, but more Colorado participants (19% vs 3%) felt their IAQ could be improved and more reported dryness as a problem (58% vs. 14%). The collected data indicate that there are benefits of operating WHMV, even when continuous use may not be needed because outdoor pollutant concentrations are low and indoor sources do not present substantial challenges.
Highlights Whole-house mechanical ventilation (WHMV) and IAQ characterized in 55 homes; 16 with/out WHMV. 31 of 42 had WHMV airflow that complied with ASHRAE 62.2–2010 >50% of WMHV systems not labeled; few occupants knew how to operate them. Formaldehyde, radon, CO2 and NO lower in homes with WHMV running. Faster PM2.5 decay rates after indoor emission events in homes with WHMV running.
Mechanical ventilation and indoor air quality in recently constructed U.S. homes in marine and cold-dry climates
Antonopoulos, Chrissi A. (author) / Rosenberg, Samuel I. (author) / Zhao, Haoran (author) / Walker, Iain S. (author) / Delp, William W. (author) / Chan, Wanyu Rengie (author) / Singer, Brett C. (author)
Building and Environment ; 245
2023-05-30
Article (Journal)
Electronic Resource
English
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