Effect of different setups, protective screens and air supply systems on the exposure to aerosols in a mock-up restaurant

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Ventilation Pub Date : 2022-05-05 DOI:10.1080/14733315.2022.2064962

R. Traversari, R. Bezemer, S. V. van Heumen, K. Kompatscher, M. Hinkema, I. Eekhout

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引用次数: 0

Abstract

Abstract Social distancing measures to lower the risk of SARS-CoV-2 transmission limit seating capacity in and constrain restaurants’ ability to operate in an economically sustainable way. Experiments have been conducted in a real-size mock-up of a restaurant, using different table setting and configurations of the ventilation system. The study has analysed the effects on total exposure to aerosols in different settings compared with social distancing. Ventilation rate is the most decisive factor for the total exposure. The particle removal rate is directly proportional to the ventilation rate, while total exposure decreases with higher ventilation rates. At low ventilation rate, setups with protective screens perform comparably or somewhat superior to the social distancing configuration, but effect size is much smaller than for ventilation rate and results are not always significant. Air supply system type does not have significant effect on either total exposure or exposure duration.

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不同设置、防护屏和送风系统对模拟餐厅气溶胶暴露的影响

降低SARS-CoV-2传播风险的社会距离措施限制了餐馆的座位容量，并限制了餐馆以经济可持续的方式经营的能力。实验在一个真实大小的餐厅模型中进行，使用不同的桌子设置和通风系统配置。该研究分析了在不同环境下，与保持社交距离相比，对气溶胶暴露总量的影响。通风量是决定总暴露量的最决定性因素。颗粒去除率与通风量成正比，总暴露量随通风量的增大而减小。在低通风率下，设置防护屏的效果与保持社交距离的效果相当或略好，但效应量远小于通风率，结果并不总是显著的。送风系统类型对总暴露量和暴露时间均无显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).