Ultraviolet Lamps for Room Air Disinfection

Publisher Website
Google Scholar
Abstract
Studies of the efectiveness of upper air ultra violet (UV) radiation against artificially generated bacterial aerosols were conducted in a laboratory test room with an 8 foot 6 Inch ceiling; the room was ventilated with six air changes per hour (ch/hr). At or below the five-foot level in the room, reflected UV radiation ranged from 0.02; to 2.6μw/sq cm, in the upper portion of the room, direct UV radiation ranged from about 10 to 150μw/sq cm. The test organism was late-log-phase Serratia marcescens in aerosols with single viable cells per particle; count median diameters (CMD) of 2.7μ and 5.2μ were generated With the 2.7μ and 5.2μ CMD aerosols, equivalent added! sanitary ventilation of 39 ch/hr and 18 ch/hr were produced, respectively; these values are meaningful improvements in sanitary ventilation.

This publication has 7 references indexed in Scilit: