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

Wargocki , Pawel; Sakamoto, Mitsuharu; Fan, Xiaojun; Kuga, Kazuki; Ito, Kazuhide; Williams, Jonathan; Beko, Gabriel

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

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Williams, Jonathan
Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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引用

Wargocki, P., Sakamoto, M., Fan, X., Kuga, K., Ito, K., Williams, J., & Beko, G. (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.

引用: https://hdl.handle.net/21.11116/0000-000D-414A-7

要旨

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.