| 新型个性化通风系统预防传染病传播数值研究 |
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| 引用本文： | 郑晓红,钱华,刘荔.新型个性化通风系统预防传染病传播数值研究[J].中南大学学报(自然科学版),2011,42(12). |
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| 作者姓名： | 郑晓红 钱华 刘荔 |
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| 作者单位： | 1. 东南大学能源与环境学院,江苏南京,210096
2. 香港大学机械工程系,中国香港 |
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| 基金项目： | “十二五”国家科技支撑计划项目(2011BAJ03B10); 国家自然科学基金重点资助项目(51036001);国家自然科学基金资助项目(50808038); 江苏省自然科学基金资助项目(BK2009289) |
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| 摘 要： | 针对医院病房内易出现病人间通过空气途径发生传染病交叉感染的问题,提出一种发散源可控的局部空调个性化通风装置作为空调系统末端,利用计算流体力学对该个性化通风系统进行模拟计算.研究结果表明:相比于传统空调,该个性化通风系统能够更有效地提供新风,并排走带有致病物的空气,使排污效率达到1.6,吸入空气质量指数高达20.5;该个性化通风系统流场也会受到中央空调系统流场的影响,导致排污效率及吸入空气质量指数降低；该个性化通风系统可以应用于医院病房以降低交叉感染概率,同时,该研究方法还可以评估中央空调通风系统与个性化通风系统的耦合现象,为科学使用个性化通风系统提供依据与策略.
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| 关 键 词： | 个性化通风系统 空气途径传染病 污染物分布 交叉感染 |
Numerical study on a new personalized ventilation system application in cross infection prevention |
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| ZHENG Xiao-hong
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QIAN Hua
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LIU Li.Numerical study on a new personalized ventilation system application in cross infection prevention[J].Journal of Central South University:Science and Technology,2011,42(12). |
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| Authors: | ZHENG Xiao-hong QIAN Hua LIU Li |
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| Institution: | ZHENG Xiao-hong1,QIAN Hua1,LIU Li2 (1.School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China,2.Department of Mechanical Engineering,The University of Hong Kong,Hong Kong,China) |
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| Abstract: | A new personalized ventilation system which integrates personalized air supply system and air exhaust system was proposed to prevent cross infection in hospital ward.Computational fluid dynamics(CFD) was employed to investigate the airflow pattern and contaminants dispersion in the ward with different ventilation systems.Numerical study results show that compared to traditional mixing ventilation system,the proposed personalized ventilation can not only deliver fresh air but also remove the exhaled pollutan... |
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| Keywords: | personalized ventilation system airborne transmitted diseases pollutant distribution cross infection |
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