期刊
ENERGY AND BUILDINGS
卷 270, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2022.112277
关键词
Operating room; Human thermal plume; Ventilation system; Bacteria-carrying particles; Computational fluid dynamics
资金
- National Natural Science Foundation of China [42122058, 41977368]
- National Key R&D Program of China [2021YFF0604000]
- Natural Science Foundation of Hebei Province [E2021502046]
- Fundamental Research Funds for the Central Universities [2021MS075, 2020YJ007]
The release of bacterial-carrying particles during surgery can cause infection and health problems. The interaction between human thermal plume and ventilation systems affects particle spread. This study evaluated four ventilation systems and found that the temperature-controlled airflow ventilation system was the most effective in reducing particle concentration.
During surgery, the release of bacterial-carrying particles (BCPs) by surgeons is one of the major pollution sources in operating rooms (ORs), which may cause surgical site infection (SSIs) or health problems. The human thermal plume emitted by the human body may affect the airflow in the surgical micro-environment, leading to the further spread of BCPs. Therefore, this paper aimed to evaluate and compare the diffusion of human thermal plume and BCPs under the design conditions of four ventilation systems (vertical laminar airflow ventilation (VLAF1), horizontal laminar airflow ventilation (HLAF), vertical laminar airflow ventilation (VLAF2), and temperature-controlled airflow ventilation (TAF)). The experiments of airspeed measurements and biological particle emission were carried out in a standard vertical laminar ventilation operating room. Computational fluid dynamics (CFD) was used to extend the investigation of the different ventilation systems. In summary, both the VLAF and TAF systems were able to interact effectively with the human thermal plume, and the TAF ventilation system was superior to the other three systems in reducing BCPs levels in the air of the operating room. The TAF system was able to control the BCPs concentration in the surgical area to 20 CFU/m(3). The interaction between human thermal plume and ventilation plays an important role in the clearance of BCPs in the operating room, so it is significant to systematically compare the performance of different ventilation systems. (C) 2022 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据