Effect of carbon dioxide concentration on respiratory parameters of occupants

A. K. Mishra*, S. Schiavon, P. Wargocki, K. W. Tham

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Climate models imply that by 2100 atmospheric CO2 levels could exceed 900 ppm. At these levels, subscribing to current ventilation rates would lead to indoor CO2 levels ≥1,400 ppm, possibly impacting our physiology and other responses. We ran a randomized, within-subject study with 15 participants to examine the physiological effects of 2,5 hour exposure to three CO2 levels: 900 ppm, 1450 ppm (reduced ventilation), and 1450 ppm (pure CO2 added, ventilation same as 900 ppm). End-tidal CO2 and respiration rate across the different exposures were not significantly different. Spirometry parameters reduced significantly from the beginning to the end at reduced ventilation exposure compared to the 900 ppm condition (p
    Original languageEnglish
    Title of host publication16th International Conference on Indoor Air Quality and Climate (INDOOR AIR 2020) : Proceedings of a meeting held 1 November 2020, Online.
    PublisherInternational Society of Indoor Air Quality and Climate
    Publication date2020
    ISBN (Electronic)978-1-7138-2360-5
    Publication statusPublished - 2020
    Event 16th Conference of the International Society of Indoor Air Quality & Climate - Online
    Duration: 1 Nov 20204 Nov 2020
    Conference number: 16

    Conference

    Conference 16th Conference of the International Society of Indoor Air Quality & Climate
    Number16
    LocationOnline
    Period01/11/202004/11/2020

    Keywords

    • End-tidal CO2
    • Respiratory performance
    • Spirometry
    • Ventilation
    • Vital capacity

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