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Occupant UV Exposure Measurements for Upper-Room Ultraviolet Germicidal Irradiation

机译:上层紫外线杀菌剂的乘员紫外线暴露测量

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摘要

The threshold limit value (TLV) guideline for ultraviolet (UV) radiation specifies that irradiance measurements to ensure occupant safety be taken over an angle of 80° at the sensor. The purpose of this study was to evaluate the effect of an 80° field of view (FOV) tube on lower room UV-C irradiation measurements.Measurements were made in an experimental chamber at a height of 1.73 m with and without an FOV tube. The FOV tube reduced the lower room irradiance readings by 18-34%, a statistically significant reduction compared to the bare sensor.An 80° FOV tube should be used for lower room irradiance measurements to comply with the TLV guideline. The resulting lower readings would allow more UV-C radiation in the upper room without compromising occupant safety. More UV-C radiation in the upper room could increase efficacy of UVGI systems for reducing transmission of airborne infectious diseases.In addition, recommendations are made to standardize lower room irradiance measurement techniques.
机译:紫外线(UV)辐射的阈值极限(TLV)准则规定,应在传感器的80°角上进行辐照度测量以确保乘员安全。这项研究的目的是评估80°视野(FOV)管对较低室内UV-C辐射测量的影响。在带有和不带有FOV管的高度为1.73 m的实验室内进行测量。 FOV管将较低的室内辐照度读数降低了18-34%,与裸传感器相比在统计学上有显着降低。应使用80°FOV管进行较低的室内辐照度测量,以符合TLV指南。所得的较低读数将允许较高的UV-C辐射在较高的房间内,而不会损害乘员的安全性。较高的房间中更多的UV-C辐射可以提高UVGI系统减少空气传播传染病传播的功效。此外,建议标准化下层房间的辐照度测量技术。

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