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  CO2 emission rates from humans when sleeping and awake. Impact of environmental factors and age

Wargocki, P., Sakamoto, M., Fan, X., Kuga, K., Ito, K., Williams, J., et al. (2022). CO2 emission rates from humans when sleeping and awake. Impact of environmental factors and age. In Proceedings of Indoor Air 2022: 17th International Conference of the International Society of Indoor Air Quality & Climate - University of Eastern Finland, Kuopio, Finland.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000D-414A-7 Version Permalink: https://hdl.handle.net/21.11116/0000-000D-4155-A
Genre: Conference Paper

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 Creators:
Wargocki , Pawel, Author
Sakamoto, Mitsuharu, Author
Fan, Xiaojun, Author
Kuga, Kazuki, Author
Ito, Kazuhide, Author
Williams, Jonathan1, Author           
Beko, Gabriel, Author
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              

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 Abstract: We summarize our three recent studies that determined CO2 emission rates from humans using the mass-balance model and the measured steady-state CO2 concentration. One study determined CO2 emission rates from sleeping adults; they were on average 11 L/h/person, 30-45% than for awake people at a light activity. They were relatively stable and similar to the published work and estimations using models. Two studies determined CO2 emission rates from the sedentary awake people at a light activity; they were on average 12.9-17.8 L/h/person. They were not significantly different between teenagers, young adults, and the elderly, nor when ozone and relative humidity increased. Reduced ventilation and increased CO2 significantly reduced CO2 emission rates; the changes in respiration could be the plausible reason. CO2 emission rates increased at thermal sensation departing from neutrality; increased metabolic activity could be the plausible reason. The emission rates were different from published results and estimations using models.

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Language(s): eng - English
 Dates: 2022
 Publication Status: Published online
 Pages: 2
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 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: https://orbit.dtu.dk/en/publications/cosub2sub-emission-rates-from-humans-when-sleeping-and-awake-impa
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Title: 17th International Conference of the International Society of Indoor Air Quality & Climate
Place of Event: Kuopio, Finland
Start-/End Date: 2022-06-12 - 2022-06-16

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Title: Proceedings of Indoor Air 2022: 17th International Conference of the International Society of Indoor Air Quality & Climate - University of Eastern Finland, Kuopio, Finland
Source Genre: Proceedings
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