负压厂房事故后压力动态变化研究
摘要：对负压厂房事故工况下压力的动态变化进行了研究，得到了负压厂房事故后压力变化的理论计算方法。指出房间恢复负压所需时间取决于3个因素：排风量、泄漏水与空气的换热量、门缝面积，其中泄漏水与空气的换热量对室内压力峰值影响大，门缝面积对恢度负压所需时间影响大。通过模拟计算分析了事故后泄漏物质的扩散规律，可供类似负压厂房事故排风设计参考。
关键词：负压厂房事故工况通风负压调节数值模拟
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参考文献[1] 叶小舟.热室通风系统的数值模拟与控制研究[D].武汉：武汉理工大学，2021:45- 60.
[2] 杨冬梅，孟庆宇.地下综合管廊通风系统设计探讨[J].暖通空调，2022,52(4):104- 107.
[3] 甄仌，张雪，孙惠蕾，等.某复叠式制冷机房二氧化碳气体泄漏扩散及事故通风模拟[J].冷藏技术，2021,44(3):39- 44,35.
[4] ZHANG S L,PAPAS P,HU L B,et al.CFD modeling of flammable refrigerant leaks inside machine rooms:emergency ventilation rates for different size chillers[J].Science and technology for the built environment,2018,24(8):463- 471.
[5] 张倩茹，张旭，叶蔚，等.某制冷机房氨气泄漏时气流组织优化分析[J].制冷学报，2021,42(1):36- 44.
[6] 王雪梅，谭羽非，张金冬，等.事故通风状态管廊燃气管道泄漏扩散模拟研究[J].煤气与热力，2019,39(9):22- 28.
[7] CAI H,LONG W D,LI X T,et al.Decision analysis of emergency ventilation and evacuation strategies against suddenly released contaminant indoors by considering the uncertainty of source locations[J].Journal of hazardous materials,2010,178(1/2/3):101- 114.
[8] DEZFOULI A M,SAFFARIAN M R,BEHBAHANI-NEJAD M,et al.Experimental and numerical investigation on development of a method for measuring the rate of natural gas leakage[J].Journal of natural gas science and engineering,2022,104:104643.
[9] 李又绿，姚安林，李永杰.天然气管道泄漏扩散模型研究[J].天然气工业，2004,24(8):102- 104.
[10] 陈琪.室内天然气管道微量泄漏扩散特性试验与CFD模拟研究[D].上海：华东理工大学，2016:36- 52.
[11] 于晓龙.室内天然气管道泄漏实验和数值模拟研究[D].哈尔滨：哈尔滨工业大学，2019:55- 60.
[2] 杨冬梅，孟庆宇.地下综合管廊通风系统设计探讨[J].暖通空调，2022,52(4):104- 107.
[3] 甄仌，张雪，孙惠蕾，等.某复叠式制冷机房二氧化碳气体泄漏扩散及事故通风模拟[J].冷藏技术，2021,44(3):39- 44,35.
[4] ZHANG S L,PAPAS P,HU L B,et al.CFD modeling of flammable refrigerant leaks inside machine rooms:emergency ventilation rates for different size chillers[J].Science and technology for the built environment,2018,24(8):463- 471.
[5] 张倩茹，张旭，叶蔚，等.某制冷机房氨气泄漏时气流组织优化分析[J].制冷学报，2021,42(1):36- 44.
[6] 王雪梅，谭羽非，张金冬，等.事故通风状态管廊燃气管道泄漏扩散模拟研究[J].煤气与热力，2019,39(9):22- 28.
[7] CAI H,LONG W D,LI X T,et al.Decision analysis of emergency ventilation and evacuation strategies against suddenly released contaminant indoors by considering the uncertainty of source locations[J].Journal of hazardous materials,2010,178(1/2/3):101- 114.
[8] DEZFOULI A M,SAFFARIAN M R,BEHBAHANI-NEJAD M,et al.Experimental and numerical investigation on development of a method for measuring the rate of natural gas leakage[J].Journal of natural gas science and engineering,2022,104:104643.
[9] 李又绿，姚安林，李永杰.天然气管道泄漏扩散模型研究[J].天然气工业，2004,24(8):102- 104.
[10] 陈琪.室内天然气管道微量泄漏扩散特性试验与CFD模拟研究[D].上海：华东理工大学，2016:36- 52.
[11] 于晓龙.室内天然气管道泄漏实验和数值模拟研究[D].哈尔滨：哈尔滨工业大学，2019:55- 60.
Dynamic change of pressure in negative pressure workshops after accidents
Abstract: In this paper, the dynamic change of pressure in the negative pressure workshops under the accident condition is studied, and the theoretical calculation method of pressure change after the accident is obtained. It is pointed out that the time for the room recovering the negative pressure depends on three factors, including the exhaust air volume, the heat exchange between leaked water and air, and the door crack area. The heat exchange between the leaked water and the air has a great influence on the peak of indoor pressure, and the door crack area has a great influence on the negative pressure recovering time. The diffusion law of the leakage material after the accident is analysed by the simulation, which can be used as a reference for the accident exhaust design of similar negative pressure workshops.
Keywords: negative pressure workshop; accident condition; ventilation; negative pressure regulation; numerical simulation;
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