Air Change Rate near Patient Model in Unidirectional Airflow of Biological Clean Room: An Experimental Study

DOI Web Site
  • ASANO Yoshihiro
    Graduate School of Comprehensive Human Sciences, University of Tsukuba

Bibliographic Information

Other Title
  • バイオロジカルクリーンルームの一方向流中における患者モデル近傍の換気に関する実験

Search this article

Description

By simulating the conditions of bed-laid patients in a biological clean room, experiments are carried out in order to study the airflows around the patients when horizontal commutation aseptic laminar flow units are operated at an airflow velocity of 0.3 or 0.5 m/s. When a patient is absent from the room, the airflows show a higher capability to transfer and remove particles at an airflow velocity of 0.5 m/s compared to that at 0.3 m/s. However, when a patient is present in the room, the airflows have a lower air exchange rate at an airflow velocity of 0.5 m/s than 0.3 m/s. This is because turbulent flow occurs downstream of the patient. The present results suggest that an increase in airflow velocity does not necessarily lead to an increase in ventilation because the wake size downstream of the patient increases with the airflow velocity.

Journal

  • Earozoru Kenkyu

    Earozoru Kenkyu 24 (1), 30-38, 2009

    Japan Association of Aerosol Science and Technology

Keywords

Details 詳細情報について

Report a problem

Back to top