Disturbance of a laminar air flow caused by differently shaped surgical lights

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

International Journal of Ventilation Pub Date : 2021-03-01 DOI:10.1080/14733315.2020.1861774

Valeria Hofer, A. Hartmann, Hansjörg Rotheudt, Benjamin Zielke, M. Kriegel

引用次数: 4

Abstract

Abstract In operating rooms with unidirectional air flow a wake is formed below the light. The influence of the geometry on the dimension of the wake and the age of air were investigated by means of validated numerical simulations as well as experimental measurements. The vertical dimension of the wake caused by the circular surgical light was 1.08 m in height. With an air-permeable shape, it could be reduced to 0.38 m (brim) to 0.28 m (centre). A more open design increased the dilution within the recirculating area and resulted in a shorter residence time of contaminants.

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不同形状的手术灯引起的层流气流的扰动

在单向气流的手术室里，光线下会形成一条尾迹。通过验证的数值模拟和实验测量，研究了几何形状对尾迹尺寸和空气年龄的影响。圆形手术灯引起的尾迹垂直高度为1.08 m。具有透气性的形状，它可以减少到0.38米(边缘)到0.28米(中心)。更开放的设计增加了再循环区域内的稀释，从而缩短了污染物的停留时间。

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).