Transmission characteristics of coughed air using cough generator with simulated oral airway

Ayako Okajima, Hitomi Tsutsumi, Shin Ichi Tanabe, Toshiki Isahaya, Takashi Ito, Shoichi Morimoto, Satoshi Hori, Takao Ariga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

This study identifies the transmission characteristics of a coughed air using a developed cough generator containing a silicon head device with an oral airway. Baby powder with a diameter range of 0.3-170 μm was emitted horizontally. The volume of the coughed air was set at 0.9L, with an air pressure of 0.4 MPa, ejection time of 0.35 s, and opening space of 4 cm 2. A particle sensor counted the number of >0.5μm particles under masked and unmasked conditions. A high concentration of particles was measured at a distance of 1 m from an ejection point without a mask, while a low concentration was observed at a distance greater than 1 m from the ejection point. Particles reached the point that was 2 m from that with a mask, although at all points, the particle number with a mask was approximately half that without a mask.

Original languageEnglish
Title of host publication10th International Conference on Healthy Buildings 2012
Pages2503-2508
Number of pages6
Publication statusPublished - 2012 Dec 1
Event10th International Conference on Healthy Buildings 2012 - Brisbane, QLD, Australia
Duration: 2012 Jul 82012 Jul 12

Publication series

Name10th International Conference on Healthy Buildings 2012
Volume3

Conference

Conference10th International Conference on Healthy Buildings 2012
CountryAustralia
CityBrisbane, QLD
Period12/7/812/7/12

Keywords

  • Cough simulation machine
  • Infection risk
  • Measurement
  • Oral cavity
  • Tracer particles

ASJC Scopus subject areas

  • Civil and Structural Engineering

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  • Cite this

    Okajima, A., Tsutsumi, H., Tanabe, S. I., Isahaya, T., Ito, T., Morimoto, S., Hori, S., & Ariga, T. (2012). Transmission characteristics of coughed air using cough generator with simulated oral airway. In 10th International Conference on Healthy Buildings 2012 (pp. 2503-2508). (10th International Conference on Healthy Buildings 2012; Vol. 3).