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Experimental Study on the Irradiation and Surface Sterilization Effect of Ultra Violet Ray in Air Conditioning System  

홍진관 (경원대학교 건축설비학과)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.3, 2004 , pp. 250-257 More about this Journal
Abstract
Recently, the use of UVC lamps inside building air-conditioning system has been increasing in both medical and nonmedical buildings for the control of environmental microorganisms. In the present study, irradiance performance test of UVC lamp was carried out and surface sterilization effect of UV ray was investigated by using UV ray irradiation experimental chamber and pilot system. Experimental results show that the effective irradiance of UVC lamp is strongly dependent on air velocity and temperature with exception of relative huminity in air-conditioning system. An individual microbiological kill effectiveness experiment also shows that the fractional kill of two microbiological samples such as E. Coli and Legionella is roughly the same as the estimated fractional kill in the case of chamber test and pilot system test.
Keywords
Ultra violet ray; Irradiation; Surface sterilization effect; Air conditioning system; Legionella; E. Coli;
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