Comparison of ventilation strategies in intensive care units for airborne infection control

The airflow distribution and aerosol diffusion rules in the negative pressure isolation ward

“…Ling et al 14 regarded SF6 as a tracer gas to explore the contaminant discharge efficiency of the negative pressure isolation ward under different forms of airflow distribution. Berlanga et al 15 experimentally The influence of airflow in the indoor environment on the distribution and transmission of droplets when infected persons talk and cough Ren et al 3 The flow field, flow structures, and particle trajectories of three ventilation strategies Wang et al 4 Optimize the air distribution in a hospital ward Anuraghava et al 5 The diffusion of airborne virus was studied in a negative pressure room with a mixed ventilation system Lu and Lin 6 The characteristics of coughed droplet dispersion in hospital wards under stratum ventilation Erdogan and Yilmazoglu 7 The aerosol distribution characteristics, airflow patterns, and temperature distribution characteristics of three different ventilation strategies (conventional, switched and local exhaust) Dao and Kim 8 The effects of different air outlet locations on the removal efficiency of infectious droplets in isolation chamber Niu et al 9 The effects of mixing ventilation and perforated ceiling air supplying ventilation on aerosol diffusion and deposition Alkhalaf et al 10 Four designs with three airflows, 9, 12, and 15 ACH (Air Change per Hour) were used to explore the capacity of the ventilation system to remove contaminant Tan et al 11 Airflow and particle dispersion under a baseline case and four proposed ventilation strategies Qian et al 12 Experiment research…”

“…Lu and Lin 6 investigated the dynamic process of the coughed droplets dispersion and the spatial distribution of the droplets in a two-bed hospital ward under stratum ventilation, and compared it with displacement ventilation and mixing ventilation. Erdogan and Yilmazoglu 7 found that among the three ventilation strategies, local exhaust method had the highest aerosol removal efficiency. Dao and Kim 8 proposed the optimal location of hospital isolation room exhaust vent to maximize droplet removal efficiency.…”