Reduction of droplet nuclei in 4 bed room

Shoichi Morimoto, Huaipeng Tang, Shinichi Tanabe, Hitomi Tsutsumi, Satoshi Hori

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

    Abstract

    If a patient is diagnosed with an airborne infectious disease, medical workers can use airborne precautions and isolate the patient in a negative pressure room. However, if the patient has not been diagnosed with the airborne disease, then the medical workers cannot use precautions due to the unwieldy nature of the N95 respirator as well as Powered Air Purifying Respirators (PAPR) being expensive. Furthermore, the patient may share a 4-bed room with compromised patients. In this study, we discussed the reduction methods of droplet nuclei concentration to reduce the infection risk in 4-bed rooms. We conducted the experiments in a full-scale test room. Air supply diffusers were on the ceiling, a square cone diffuser was in the center and four linear slot diffusers were on the step side of each bed between a wall and a partition wall. The largest drop in concentrations occurred with smaller air volumes for the square cone diffuser and larger air volumes for the linear slot diffusers. The concentrations were reduced further by using a rolling screen.

    Original languageEnglish
    Title of host publicationIndoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate
    PublisherInternational Society of Indoor Air Quality and Climate
    Pages45-51
    Number of pages7
    Publication statusPublished - 2014
    Event13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014 - Hong Kong
    Duration: 2014 Jul 72014 Jul 12

    Other

    Other13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
    CityHong Kong
    Period14/7/714/7/12

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    Keywords

    • 4 bed room
    • Airborne infection
    • Droplet nuclei
    • Infection risk
    • Tuberculosis

    ASJC Scopus subject areas

    • Pollution
    • Building and Construction
    • Health, Toxicology and Mutagenesis
    • Computer Science Applications

    Cite this

    Morimoto, S., Tang, H., Tanabe, S., Tsutsumi, H., & Hori, S. (2014). Reduction of droplet nuclei in 4 bed room. In Indoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate (pp. 45-51). International Society of Indoor Air Quality and Climate.