Indoor air quality (IAQ) has a significant impact on human health, comfort, and productivity. For naturally ventilated spaces, IAQ is highly dependent on human interaction with the building (opening windows, etc.) as well as occupancy. The COVID-19 outbreak caused a global pandemic and informed that airborne transmission of the virus indoors is the most important route of infection. The alarming facts and measures taken in response to this event have changed people's behaviour and occupancy levels in public spaces. The ELISIR project's smart window units equipped with a variety of sensors monitored the indoor environmental parameters of an office in Milan from 2019 to 2023, the long-term monitoring data made it possible to statistically observe the changes in the indoor environment and occupants' behaviour before, during and after the pandemic. The data were split into different phases, comparing indoor CO2 concentrations and window openings at different phases, to analyse how the changes brought about by the COVID-19 pandemic affected occupants' window opening behaviour and room occupancy levels. To see whether people's behaviour was changed by the pandemic to be more conducive to maintaining a better indoor environment, whether people became more aware of indoor air quality as a result of the experience, and to make predictions about what might still be a problem in the future based on the trends that have been observed, as a reminder of the lessons that have been learned and the importance of indoor air quality.
La qualità dell'aria interna (IAQ) ha un impatto significativo sulla salute umana, sul comfort e sulla produttività. Per gli spazi ventilati naturalmente, l'IAQ dipende fortemente dall'interazione dell'uomo con l'edificio (apertura delle finestre, ecc.) e dall'occupazione. L'epidemia di COVID-19 ha causato una pandemia globale e ha informato che la trasmissione del virus per via aerea in ambienti chiusi è la principale via di infezione. I fatti allarmanti e le misure adottate in risposta a questo evento hanno cambiato il comportamento delle persone e i livelli di occupazione degli spazi pubblici. Le unità intelligenti per finestre del progetto ELISIR, dotate di una serie di sensori, hanno monitorato i parametri ambientali interni di un ufficio a Milano dal 2019 al 2023; i dati del monitoraggio a lungo termine hanno permesso di osservare statisticamente i cambiamenti nell'ambiente interno e nel comportamento degli occupanti prima, durante e dopo la pandemia. I dati sono stati suddivisi in diverse fasi, confrontando le concentrazioni di CO2 negli ambienti interni e l'apertura delle finestre in fasi diverse, per analizzare come i cambiamenti apportati dalla pandemia COVID-19 abbiano influenzato il comportamento degli occupanti nell'apertura delle finestre e i livelli di occupazione delle stanze. Per verificare se il comportamento delle persone è stato modificato dalla pandemia in modo da essere più favorevole al mantenimento di un ambiente interno migliore, se le persone sono diventate più consapevoli della qualità dell'aria interna a seguito di questa esperienza e per fare previsioni su ciò che potrebbe essere ancora un problema in futuro sulla base delle tendenze osservate, come promemoria delle lezioni apprese e dell'importanza della qualità dell'aria interna.
Indoor air quality awareness among office occupants through COVID-19 from long-term indoor environmental monitoring data
YAN, ENZE
2022/2023
Abstract
Indoor air quality (IAQ) has a significant impact on human health, comfort, and productivity. For naturally ventilated spaces, IAQ is highly dependent on human interaction with the building (opening windows, etc.) as well as occupancy. The COVID-19 outbreak caused a global pandemic and informed that airborne transmission of the virus indoors is the most important route of infection. The alarming facts and measures taken in response to this event have changed people's behaviour and occupancy levels in public spaces. The ELISIR project's smart window units equipped with a variety of sensors monitored the indoor environmental parameters of an office in Milan from 2019 to 2023, the long-term monitoring data made it possible to statistically observe the changes in the indoor environment and occupants' behaviour before, during and after the pandemic. The data were split into different phases, comparing indoor CO2 concentrations and window openings at different phases, to analyse how the changes brought about by the COVID-19 pandemic affected occupants' window opening behaviour and room occupancy levels. To see whether people's behaviour was changed by the pandemic to be more conducive to maintaining a better indoor environment, whether people became more aware of indoor air quality as a result of the experience, and to make predictions about what might still be a problem in the future based on the trends that have been observed, as a reminder of the lessons that have been learned and the importance of indoor air quality.| File | Dimensione | Formato | |
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2024_04_Yan.pdf
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https://hdl.handle.net/10589/218957