著者

姜 允敬 加藤 信介 成 旻起 金 鐘訓 柳 宇 阿部 恵子 原田 光朗 柳原 隆司

出版者

日本建築学会

雑誌

日本建築学会環境系論文集 (ISSN:13480685)

巻号頁・発行日

vol.76, no.667, pp.793-798, 2011-09-30 (Released:2012-01-13)

参考文献数

17

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For possible applications in the humidifier-elements of air-conditioning systems, we investigated the germicidal effect of microwave irradiation on fungal spores, e.g. Cladosporium herbarum and Fusarium solani as well as bacteria, e.g. Bacillus subtilis. For the irradiation of our samples we used a general-purpose microwave oven as well as a specially assembled microwave source that could emit microwave radiation at a frequency of 2.45 GHz. In our first experiment, we determined the optimum condition of the two parameters of radiation output power and exposure time to achieve the desired germicidal effects. Microbes on both dry and wet filters were used as samples. The second part of the study was aimed to determine whether the germicidal effect originates directly from microwave irradiation or rather from the radiation-induced heat. Our results indicate that the degradation of microbes is affected by the type of strain, microwave output power, exposure time and sample moisture (and thus induced temperature increase). And it was identified that germicidal effect by microwave is mainly due to the thermal effect.

著者

姜 允敬 長野 克則

出版者

公益社団法人 空気調和・衛生工学会

雑誌

空気調和・衛生工学会大会 学術講演論文集 平成28年度大会(鹿児島)学術講演論文集 第7巻 空気質 編 (ISSN:18803806)

巻号頁・発行日

pp.37-40, 2016 (Released:2017-10-31)

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The microbial contamination in the ventilation system and the indoor air quality were evaluated in the underground shopping mall, Sapporo. The energy consumption of the shopping mall was investigated for five years from 2010 to 2014. Airborne microbial contaminations in the shopping mall were measured during summer and winter on weekdays and weekend-days. Species of the airborne bacteria was identified by the 16S rDNA sequence analysis.

著者

姜 允敬 長野 克則

出版者

公益社団法人 空気調和・衛生工学会

雑誌

空気調和・衛生工学会大会 学術講演論文集 平成27年度大会(大阪)学術講演論文集 第7巻 空気質 編 (ISSN:18803806)

巻号頁・発行日

pp.113-116, 2015 (Released:2017-11-15)

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The microbial contamination in the ventilation system and the indoor air quality were evaluated in the Sapporo underground walkway, Hokkaido. The energy consumption of the underground walkway was investigated for four years from its opening in 2011 until 2014. Airborne microbial contaminations in the underground walkway were measured in the summer and in the winter on weekdays and weekend-days.