i
Occupant UV Exposure Measurements for Upper-Room Ultraviolet Germicidal Irradiation
-
Mar 11 2016
-
-
Source: J Photochem Photobiol B. 159:88-92.
[PDF-224.56 KB]
Details:
-
Alternative Title:J Photochem Photobiol B
-
Personal Author:
-
Description: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 1.73m 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.
-
Subjects:
-
Source:
-
Pubmed ID:27038734
-
Pubmed Central ID:PMC4854786
-
Document Type:
-
Funding:
-
Volume:159
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
