Optimization of ventilation efficiency in tunnel-type underground spaces using response surface methodology: a case study of Yunlong Mountain civil defense in Xuzhou

被引:1
作者
Ji, Yuan [1 ]
Lu, Jijun [2 ]
Hong, Xiaochun [3 ,4 ]
Zhang, Haifeng [5 ]
Dong, Jinggang [2 ]
Huang, Feiyu [2 ]
机构
[1] Southeast Univ, Architectural Design & Res Inst Co Ltd, Nanjing 210096, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Sch Architecture & Design, Xuzhou 221000, Peoples R China
[3] Yangzhou Univ, Coll Architectural Sci & Engn, Yangzhou 225127, Peoples R China
[4] Jiangsu Collaborat Innovat Ctr Bldg Energy Saving, Jiangsu Vocat lnstitute Architectural Technol, Xuzhou 221000, Peoples R China
[5] Tongji Univ, Architectural Design & Res Inst Grp Co LTD, Shanghai 200082, Peoples R China
关键词
Tunnel-type underground spaces; Ventilation efficiency; Response surface methodology; Civil defense underground spaces; Design optimization; THERMAL PERFORMANCE; WINE CELLARS; AIR; CFD; TEMPERATURE; BEHAVIOR; COMFORT; DESIGN;
D O I
10.1038/s41598-024-73059-7
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Civil defense projects, designed as wartime underground spaces, often lack effective natural ventilation and have considerable depth, which complicates their use as public spaces in peacetime. However, the application of passive ventilation technologies can create effective airflow channels within these structures, significantly enhancing ventilation efficiency and thus improving the overall thermal comfort level. For this study, air age, along with average wind speed, temperature, and relative humidity as stipulated by the "Requirements for Environmental Sanitation of Civil Air Defense Works during Peacetime Use" (GBT 17216-2012), were selected as evaluation metrics. This paper compares the ventilation effectiveness between single ventilation shafts and multiple ventilation shafts under positive and negative pressure conditions in underground civil defense structures. The results indicate that negative pressure ventilation in multiple shaft configurations performs optimally across various ventilation approaches. Subsequently, the Response Surface Methodology (RSM) was utilized to further optimize the positioning of multiple ventilation shafts. The study examined the impact of three ventilation shaft locations on average wind speed, temperature, relative humidity, and air age, leading to an optimized design. Specifically, the optimal positions are 54.76 m for Shaft A, 51.45 m for Shaft B, and 79.85 m for Shaft C, achieving an average wind speed of 0.222 m/s, a temperature of 26 degrees C, a relative humidity reduction to 85.47%, and an average air age of 10.57 s. This research provides practical insights for the optimization of ventilation in underground civil defense facilities.
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页数:24
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