Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinicOA
Dental clinics have become hotspots for potential virus transmission due to the nature of their procedures.This study introduces a wall-based attachment ventilation(AV)model to investigate aerosol diffusion and the impact of ventilation control within dental clinics,utilizing both experimental and simulation methodologies.A full-scale laboratory has been established for the experimental validation of numerical simulations based on Computational Fluid Dynamics(CFD).The findings highlight that the AV mode,particularly when the air outlet is situated in the upper region,exhibits superior aerosol removal compared to the lower outlet configuration.Additionally,the research identified a critical point in aerosol reduction related to the air change rate per hour(ACH),which falls between 5 and 8 h^(−1) based on this study.Compared to mixed ventilation(MV),the AV system demonstrated approximately 10%higher escape rate,10%lower deposition rate,and 3%higher suspension rate.These findings provide valuable insights for reducing infection risks among healthcare workers in dental clinics.
Songmei Zu;Haiguo Yin;Zhuohang Li;Angui Li
School of Building Services Science and Engineering,Xi''an University of Architecture and Technology,Xi´an,710055,ChinaSchool of Building Services Science and Engineering,Xi''an University of Architecture and Technology,Xi´an,710055,China International Joint Laboratory on Low Carbon Built Environment,Ministry of Education of China,Xi´an,710055,ChinaQingdao Haier Air-Condition Electronic Co.,Ltd,Qingdao 266000,ChinaSchool of Building Services Science and Engineering,Xi''an University of Architecture and Technology,Xi´an,710055,China International Joint Laboratory on Low Carbon Built Environment,Ministry of Education of China,Xi´an,710055,China
医药卫生
VentilationDental clinicEnclosed spaceAerosolAir change rate per hour(ACH)
《Energy and Built Environment》 2026 (2)
P.474-488,15
funded by the Excellent Funding for Scientific and Technological Activities of Overseas Scholars in Shaanxi Province(No.2022-005)the Shaanxi Provincial Key R&D Program International Science and Technology Cooperation Program Project(2023-GHZD-28)the Youth Innovation Team Scientific Research Plan Project of Education Department of Shaanxi Province(No.23JP078)the International Joint Research Center for Building Service Science and Underground Space Environment,Shaanxi(China).
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