Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A numerical investigation of vertical and horizontal laminar airflow ventilation in an operating room
https://orcid.org/0000-0002-9361-1796
Abstract The effectiveness of vertical and horizontal ventilation systems in terms of reducing sedimentation and distribution of bacteria-carrying particles in an operating room is investigated. The exploration is carried out numerically using computational fluid dynamics. Both airborne particle concentration and sedimentation are simulated under different ventilation flow conditions. Model validation is performed through comparisons with experimental data from the literature. Achieved results reveal that the preferred selection between vertical and horizontal ventilation scenario in an operating room is highly depend on internal constellation of obstacles, work practice and supply airflow rate. Improper positioning of operating room personnel may remarkably reduce the ventilation efficiency. Increasing the airflow rate reduces particle concentration in the surgical zone. Efficient ventilation, however, is not only a matter of increasing airflow rate. Inappropriate airflow rates result in flow pattern transition from laminar to less efficient turbulent mixing. A laminar and well- organized (unidirectional) flow pattern is retired for a good result. Innovative further solutions are suggested to be found in cross-disciplinary collaboration.
Highlights Performance of vertical and horizontal ventilation systems in an operating room was investigated. Surgical activities are recommended to be done downstream in relation to the wound area. No work should take place between the supply diffusers and the areas important for surgical asepsis. Based on current finding, horizontal ventilation scenario shows better performance. A laminar, unidirectional airflow pattern is required for efficient particle elimination.
A numerical investigation of vertical and horizontal laminar airflow ventilation in an operating room
https://orcid.org/0000-0002-9361-1796
Abstract The effectiveness of vertical and horizontal ventilation systems in terms of reducing sedimentation and distribution of bacteria-carrying particles in an operating room is investigated. The exploration is carried out numerically using computational fluid dynamics. Both airborne particle concentration and sedimentation are simulated under different ventilation flow conditions. Model validation is performed through comparisons with experimental data from the literature. Achieved results reveal that the preferred selection between vertical and horizontal ventilation scenario in an operating room is highly depend on internal constellation of obstacles, work practice and supply airflow rate. Improper positioning of operating room personnel may remarkably reduce the ventilation efficiency. Increasing the airflow rate reduces particle concentration in the surgical zone. Efficient ventilation, however, is not only a matter of increasing airflow rate. Inappropriate airflow rates result in flow pattern transition from laminar to less efficient turbulent mixing. A laminar and well- organized (unidirectional) flow pattern is retired for a good result. Innovative further solutions are suggested to be found in cross-disciplinary collaboration.
Highlights Performance of vertical and horizontal ventilation systems in an operating room was investigated. Surgical activities are recommended to be done downstream in relation to the wound area. No work should take place between the supply diffusers and the areas important for surgical asepsis. Based on current finding, horizontal ventilation scenario shows better performance. A laminar, unidirectional airflow pattern is required for efficient particle elimination.
A numerical investigation of vertical and horizontal laminar airflow ventilation in an operating room
https://orcid.org/0000-0002-9361-1796
Abstract The effectiveness of vertical and horizontal ventilation systems in terms of reducing sedimentation and distribution of bacteria-carrying particles in an operating room is investigated. The exploration is carried out numerically using computational fluid dynamics. Both airborne particle concentration and sedimentation are simulated under different ventilation flow conditions. Model validation is performed through comparisons with experimental data from the literature. Achieved results reveal that the preferred selection between vertical and horizontal ventilation scenario in an operating room is highly depend on internal constellation of obstacles, work practice and supply airflow rate. Improper positioning of operating room personnel may remarkably reduce the ventilation efficiency. Increasing the airflow rate reduces particle concentration in the surgical zone. Efficient ventilation, however, is not only a matter of increasing airflow rate. Inappropriate airflow rates result in flow pattern transition from laminar to less efficient turbulent mixing. A laminar and well- organized (unidirectional) flow pattern is retired for a good result. Innovative further solutions are suggested to be found in cross-disciplinary collaboration.
Highlights Performance of vertical and horizontal ventilation systems in an operating room was investigated. Surgical activities are recommended to be done downstream in relation to the wound area. No work should take place between the supply diffusers and the areas important for surgical asepsis. Based on current finding, horizontal ventilation scenario shows better performance. A laminar, unidirectional airflow pattern is required for efficient particle elimination.
A numerical investigation of vertical and horizontal laminar airflow ventilation in an operating room
Sadrizadeh, Sasan (Autor:in) / Holmberg, Sture (Autor:in) / Tammelin, Ann (Autor:in)
Building and Environment ; 82 ; 517-525
19.09.2014
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2014
| British Library Online Contents | 2014
| British Library Online Contents | 2018
| British Library Online Contents | 2018