A study of the energy consumption and airborne microbe concentration in the Sapporo underground walkway in a cold region of Japan
A study of the energy consumption and airborne microbe concentration in the Sapporo underground walkway in a cold region of Japan
复制标题
日本寒冷地区札幌地下通道的能耗和空气微生物浓度研究
DOI：
10.1080/23744731.2016.1206733
复制
发表时间：
2016
影响因子：
1.9
通讯作者：
Yoonkyung KANG and Katsunori NAGANO
中科院分区：
文献类型：
--
作者：
K Hori;J Wicht;and W Dietrich;植田浩明;Yoonkyung KANG and Katsunori NAGANO;Kumiko Hori;Yoonkyung KANG and Katsunori NAGANO
本研究旨在评估位于日本寒冷地区的札幌地下人行道的能源消耗、室内空气质量以及空气中细菌和真菌的浓度。从2011年开放到2014年，对地下人行道的能耗、温度、相对湿度和二氧化碳浓度进行了为期4年的调查。使用传感器和札幌市政厅的数据自动检测温度、相对湿度和二氧化碳浓度。为了评估通风系统和室内的微生物污染，在夏季和冬季的开放时间内，在2天（工作日和周末）测量空气中细菌和真菌的浓度。比较了送风、室内空气和室外空气中的空气微生物浓度。通过16S rDNA序列分析鉴定了空气中细菌的种类。2013年，当冬季和夏季人行道温度发生变化时，能源使用强度有所下降。人行道中的二氧化碳浓度保持在1000 ppm以下。吊顶送风口送风中的细菌和真菌数量低于室外和室内空气中的细菌和真菌数量。这些结果表明，能源消耗和室内空气质量保持在整个4年期间的人行道。本研究可为地下空间室内空气品质相关标准之制定及空调通风系统之控制策略提供参考。
The present study sought to evaluate the energy consumption, indoor air quality and concentration of airborne bacteria and fungi in the Sapporo underground walkway, which is in a cold region of Japan. The energy consumption, temperature, relative humidity, and carbon dioxide concentrations of the underground walkway were investigated for 4 years from its opening in 2011 (until 2014). The temperature, relative humidity, and carbon dioxide concentrations were automatically detected using sensors and data from Sapporo city hall. To evaluate the microbial contamination in the ventilation system and indoors, the concentrations of airborne bacteria and fungi were measured on 2 days (a weekday and a weekend day) during opening hours in both summer and winter. The concentration of airborne microbes in the supply air, indoor air, and outside air was compared. Species of airborne bacteria were identified using 16S rDNA sequence analysis. The energy use intensities were decreased in 2013, when the walkway temperature was changed during both winter and summer. The carbon dioxide concentration in the walkway was maintained below 1000 ppm. The number of airborne bacteria and fungi in the supply air from the ceiling diffuser was lower than those in the outdoor and indoor air. These results indicate that both energy consumption and indoor air quality were maintained in the walkway throughout the 4-year period. This study could be helpful for developing the related standards for indoor air quality and for developing control strategies to properly operate air conditioning and ventilation systems in underground spaces.