Development of a dual-collimation batch reactor for determining ultraviolet inactivation rate constants (k-values) for airborne microorganisms

Stephen Martin, Elizabeth Shogren, David Blum, Paul Kremer, William P. Bahnfleth, James Freihaut

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We designed, constructed, and characterized a new dual-collimation UV air-phase reactor. This new system is unique because it collimates UV energy from a single lamp in two directions simultaneously. This dual-collimation feature provides two distinct advantages over traditional single-collimation systems: 1) real-time UV dose (fluence) determination because the radiometer sensor head remains in place during airborne microorganism exposure tests, and 2) simple actinometric determination of one overall correction factor (Reactor Factor = 0.39) that relates measured irradiance levels to actual irradiance levels experienced by the airborne microbes. This single correction factor replaces the four factors required for traditional collimated systems.

Original languageEnglish (US)
Title of host publication10th International Conference on Healthy Buildings 2012
Pages1091-1096
Number of pages6
StatePublished - Dec 1 2012
Event10th International Conference on Healthy Buildings 2012 - Brisbane, QLD, Australia
Duration: Jul 8 2012Jul 12 2012

Publication series

Name10th International Conference on Healthy Buildings 2012
Volume2

Other

Other10th International Conference on Healthy Buildings 2012
CountryAustralia
CityBrisbane, QLD
Period7/8/127/12/12

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

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  • Cite this

    Martin, S., Shogren, E., Blum, D., Kremer, P., Bahnfleth, W. P., & Freihaut, J. (2012). Development of a dual-collimation batch reactor for determining ultraviolet inactivation rate constants (k-values) for airborne microorganisms. In 10th International Conference on Healthy Buildings 2012 (pp. 1091-1096). (10th International Conference on Healthy Buildings 2012; Vol. 2).