E-31 オフィスビルにおける空調給気中細菌と真菌濃度に関する研究

概要

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Almost all office buildings are equipped with air-conditioning system now, and air-conditioning systems play an important role on airborne microbial contamination in an office building. In control of indoor airborne microbe concentration, it is indispensable to clarify the airborne bacterial and fungous concentration in supply air of an air-conditioning system. This study mainly reports the results obtained by detailed investigations about airborne bacterial and fungous concentration in supply air of air-conditioning system equipped in 22 office buildings located in Tokyo. Not only Cladosporium sp., Penicillium sp. and Aspergillius sp., but yeasts, Fusarium sp. which are hygrophilous fungi were isolated from supply air by high frequency. Moreover, at the buildings which are not so remarkable contaminated by microbes, it is not so difficult to satisfy the standard value of indoor airborne bacterium and fungus of the Architectural Institute of Japan (AIJES-A002-2005). In other words, when indoor airborne bacterial or airborne fungous concentrations exceed the standard value, it means that a certain pollution source exists in the inside of an air-conditioning system or indoor.
社団法人空気調和・衛生工学会の論文
2010-08-12