空气幕对厨房内PM2.5控制效果的模拟与分析  

A Numerical Simulation and an Analysis of Air Curtain Control Effect on PM2.5 in the Kitchen

作　　者：甘阳阳 李志生[1] Gan Yang-yang;Li Zhi-sheng(School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《广东工业大学学报》2020年第3期82-87,共6页Journal of Guangdong University of Technology

基　　金：广东省自然科学基金资助项目(S2011040003755)。

摘　　要：厨房烹饪是民居室内PM2.5污染物的重要来源,为对其进行有效控制,提出了空气幕送风方式。建立厨房物理模型,使用Fluent软件对厨房内的气流组织、温度分布和PM2.5浓度分布进行了数值模拟。研究了空气幕对厨房内PM2.5和热流的控制效果,并对3种射流速度进行对比分析。研究结果表明:空气幕射流气流对烹饪区域产生了很好的包裹效应,可以阻隔PM2.5的扩散和热流的蔓延;可使厨房内PM2.5排除率提高到44%~75%,平均降温1~2℃。当空气幕射流速度为0.6 m/s时,控制效果最佳。研究结论可对厨房PM2.5污染的防治提供参考,为空气幕送风系统的研究提供模拟数据和理论依据。Cooking in the residential kitchen is an important source of indoor PM2.5.In order to control PM2.5 effectively,the air curtain is proposed as an air supply means.A model of the kitchen is built and a numerical simulation,including airflow organization,temperature distribution and PM2.5 concentration distribution in the kitchen,is performed by using the Fluent software.A numerical simulation is performed to study the control effect of PM2.5 pollutants and heat flow in the kitchen.Three kinds of jet velocities are compared and analyzed.The results of this study show that the jet flow of an air curtain has a good wrapping effect on the cooking area,which can obstruct the diffusion of PM2.5 and the spread of heat flow.The PM2.5 removal rate can be increased to44%~75%,and the average temperature in the kitchen can be lowered by 1~2°C by using the air curtain to supply air.The control effect is optimal when the air curtain jet velocity is 0.6 m/s.The research productions have reference for the prevention and treatment of PM2.5 pollution in the kitchen and can provide simulation data and a theoretical basis for the study of the air curtain air supply system.

关 键 词：民居厨房 PM2.5 数值模拟 空气幕控制 

分 类 号：TU834.8[建筑科学—供热、供燃气、通风及空调工程]