Abstract
The modeling of systems for air and surface disinfection can be used to assess the UV dose, which can then be used to determine disinfection rates for specific microbes. The modeling of UV irradiance fields can produce fairly accurate results for the purposes of system sizing. Several components in UV disinfection systems may require modeling – the lamp UV irradiance, the reflective enclosure, if any is used, and the total UV dose imparted by any UV system. The methods presented here can be adapted to evaluating any type of air and surface disinfection system, including cooling coil irradiation systems, Upper Room systems, packaging disinfection, air disinfection, and food disinfection. This chapter presents modeling methods and tools that are available and that have been well-corroborated by empirical data on UV lamps and microbial disinfection rates. These are computational methods and are best applied using software or spreadsheets. Models and methods have been presented in the literature other than those given here, and some of these are accurate while others are either less so or are theoretical models that have not yet been applied (Buttolph and Haynes 1950, Philips 1985, IESNA 2000, Gardner and Shama 1999, Krasnochub 2005). It is not the intent of this chapter to review or compare the various models, but to present the reader with a workable set of tools for designing UV systems for air and surface disinfection.
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References
Beggs CB, Kerr KG, Donelly JK, Sleigh PA, Mara DD, Cairns G. 2000. An engineering approach to the control of Mycobacterium tuberculosis and other airborne pathogens: A UK hospital based pilot study. Transactions of the Royal Society of Tropical Medicine and Hygiene 94:141–146.
Blatchley EF. 1997. Numerical modelling of UV intensity: Application to collimated-beam reactors and continuous-flow systems. Wat Res 31(9):2205–2218.
Buttolph LJ, Haynes H. 1950. Ultraviolet Air Sanitation. Cleveland, OH: General Electric. Report nr LD-11.
Gardner DWM, Shama G. 1999. UV Intensity Measurement and Modelling and Disinfection Performance Prediction for Irradiation of Solid Surfaces with UV Light. Food Bioproducts Proc 77(C3):232–242.
IBSI. 2003. UVS: Specular Reflectivity UVGI Analysis Program. New York: Immune Building Systems, Inc.
IESNA. 2000. IESNA Lighting Handbook HB-9-2000, Reference and Application Chapter 6,Light Sources. New York: Illumination Engineering Society of North America.
Jacob SM, Dranoff JS. 1970. Light intensity profiles in a perfectly mixed photoreactor. AIChE J 16(3):359–363.
Kowalski WJ, Bahnfleth WP. 2000. Effective UVGI system design through improved modeling. ASHRAE Trans 106(2):4–15.
Kowalski WJ, Bahnfleth WP, Witham DL, Severin BF, Whittam TS. 2000. Mathematical modeling of UVGI for air disinfection. Quant Microbiol 2(3):249–270.
Kowalski WJ. 2001. Design and Optimization of UVGI Air Disinfection Systems [PhD]. State College: The Pennsylvania State University.
Kowalski WJ, Bahnfleth WP, Rosenberger JL. 2003. Dimensional analysis of UVGI air disinfection systems. Intl J HVAC&R Res 9(3):17.
Kowalski WJ. 2003. Immune Building Systems Technology. New York: McGraw-Hill.
Kowalski WJ, Bahnfleth WP, Mistrick RG. 2005. A specular model for UVGI air disinfection systems. IUVA News 7(1):19–26.
Krasnochub A. 2005. UV disinfection of air, some remarks. IUVA News 7(2):9–13.
Modest MF. 1993. Radiative Heat Transfer. New York: McGraw-Hill.
Philips. 1985. UVGI Catalog and Design Guide. Netherlands: Catalog No. U.D.C. 628.9.
Qualls RG, Johnson JD. 1985. Modeling and efficiency of ultraviolet disinfection systems. Water Res 19(8):1039–1046.
Severin BF, Suidan MT, Englebrecht RS. 1984. Mixing effects in UV disinfection. J Water Pollut Control Fed 56(7):881–888.
UVDI. 2000. Report on Bioassays of S. marscecens and B. subtilis Exposed to UV Irradiation. Valencia, CA: Ultraviolet Devices, Inc.
UVDI. 2001. UVD: Ultraviolet Air Disinfection Design Program. Version 12. Valencia, CA: Ultraviolet Devices, Inc.
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Kowalski, W. (2009). UVGI System Modeling. In: Ultraviolet Germicidal Irradiation Handbook. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01999-9_7
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DOI: https://doi.org/10.1007/978-3-642-01999-9_7
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