Spatial Distribution of Fluence Rate from Upper-Room Ultraviolet Germicidal Irradiation: Experimental Validation of a Computer-Aided Design Tool

Details

• Personal Author:
  Brickner PW ; Chin K ; First MW ; Levin RE ; Miller SL ; Nardell EA ; Ngai P ; Rahn RO ; Rudnick SN ; Sears T ; Vincent RL ; Zhang J
• Description:
  A commercial computer-aided design tool used by the lighting industry was modified to predict fluence rates for upper-room ultraviolet germicidal irradiation. Experimental validation based on more than 1600 measurements and 3 types of commercial ultraviolet fixtures, which was done in an experimental chamber and in a homeless shelter having fixtures in continuous use for over 7 years, showed differences in measured and predicted average upper-room fluence rates of less than 10%. The computer-aided design tool, however, was not very successful at predicting fluence rates at specific room locations, a capability that is needed for mating computational fluid dynamics with ultraviolet germicidal irradiation. Although not an objective of this study, it was also found that the three types of fixtures used in this study have surprisingly significant differences in efficiency based on fixture ultraviolet power output and electrical input. One fixture type had an efficiency that was more than five times that of another. For comparison purposes, a standard method for measuring and reporting fixture efficiency is needed. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Communicable Diseases Community Health Services Disinfectants Microbiology Occupational Health Safety Software Ventilation
• Keywords:
  Air Contaminants Airflow Air Treatment Equipment Community Health Computer Models Contagious Diseases Control Equipment Disease Control Germicides Indoor Environments Infection Control Infectious Diseases Lighting Systems Microorganisms Ultraviolet Radiation Ventilation Equipment Ventilation Systems

  More +
• ISSN:
  1078-9669
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Massachusetts ; OSHA Region 1
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  18
• Issue:
  4
• NIOSHTIC Number:
  nn:20051967
• Citation:
  HVACR Res 2012 Aug; 18(4):774-794
• Contact Point Address:
  Richard L.Vincent, Department of Medicine, Mount Sinai School of Medicine, General Internal Medicine, Section of Community Medicine, One Gustav L. Levy Place, Box 1087, New York, NY 10029, USA
• Email:
  richard.vincent@mountsinai.org
• Federal Fiscal Year:
  2012
• NORA Priority Area:
  Healthcare and Social Assistance
• Performing Organization:
  Brigham and Women's Hospital, Boston, Massachusetts
• Peer Reviewed:
  True
• Start Date:
  20060801
• Source Full Name:
  HVAC & R Research
• End Date:
  20170731
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8ee925dba5a48e367f03d44de8df93bef91d711e1fa0a6f597f91f86cc94d63bbe20e81237f9bf8bd7a84448a14c14652a32e28ac8e2d2dd831efca921ca1bed
• Download URL:
  https://stacks.cdc.gov/view/cdc/211613/cdc_211613_DS1.pdf
• File Type:
  [PDF - 6.13 MB ]