Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinic

Songmei Zu; Haiguo Yin; Zhuohang Li; Angui Li

doi:10.1016/j.enbenv.2025.04.001

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Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinic

更新时间：2026-04-03

- Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinic
- Energy and Built Environment Vol. 7, Issue 2, Pages: 474-488(2026)
- 作者机构：
  
  1. School of Building Services Science and Engineering, Xi´an University of Architecture and Technology, Xi´an,China,710055
  2. International Joint Laboratory on Low Carbon Built Environment, Ministry of Education of China, Xi´an,China,710055
  3. Qingdao Haier Air-Condition Electronic Co., Ltd,Qingdao,China,266000
- 作者简介：
- 基金信息：
- DOI：10.1016/j.enbenv.2025.04.001
  CLC：
- Received：18 December 2024，
  
  Online First：25 March 2026，
  
  Published：2026
- 稿件说明：
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Songmei Zu, Haiguo Yin, Zhuohang Li, et al. Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinic[J]. Energy and Built Environment, 2026, 7(2): 474-488.
DOI：

Songmei Zu, Haiguo Yin, Zhuohang Li, et al. Comparative study on aerosol fate of mixed ventilation and attachment ventilation in a dental clinic[J]. Energy and Built Environment, 2026, 7(2): 474-488. DOI： 10.1016/j.enbenv.2025.04.001.

摘要

Abstract

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.

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