高层住宅厨房主支式集中排风系统的运行特性  

Analysis on Operation Characteristic of Main Branch Style Centralized Exhaust System in High-Rise Residential Kitchen

作　　者：王岳人[1] 刘鑫[1] 刘斌[2] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]北京都林国际工程设计咨询有限公司,北京100044

出　　处：《沈阳建筑大学学报（自然科学版）》2010年第2期345-349,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家十一五科技支撑计划项目(2006BAJ02A12)

摘　　要：目的为探讨导致集中式排风系统排风量不足甚至出现倒烟的原因及确定最佳管道横截面积.方法通过CFD方法模拟,建立层数为15层的仿真模型,分别计算了排风管道系统在几个不同规格截面积和设定不同的开机率条件下的典型气体流动工况.并且对照实验装置进行的实际测量数据,对模拟结果进行比较和修正.通过观察系统内压强和速度的分布,分析其排风效果.结果400mm×700mm的管道截面积基本可以满足系统在各开机率下运行,其中30%开机率时,未开机用户全部无回流.而400mm×500mm、400mm×600mm两种截面积时,各工况下都有不同程度的回流.结论主管道的截面积和开机率是影响系统排风效果的主要因素.The paper aims to identify the causes leading to the lack of exhaust air rate of centralized exhaust ventilation system and even causing the amount of smoke down and to determine the best channel cross-sectional area. Through CFD simulation,the 15-layer simulation model is established. The exhaust pipe systems are calculated in several different specifications of different cross-sectional area and set operation rate of gas flow under the conditions of a typical working conditions. Contrasting with the actual measurement data measured by experimental device, the simulation results are compared and corrected. The effects of exhaust are analyzed by observing the system pressure and velocity distribution. The results show that the 400 mm x 700 mm cross-sectional area of the pipeline can meet the basic operation rate of the system＇s running. When 30% are on, the others whose hoods are off,there is no reflowing. And all the operating conditions have dif- ferent levels of reflowing when the pipelines＇ cross-sectional area are 400 mm × 500 mm and 400 mm × 600 mm. The conclusion is that the cross-sectional area of the pipeline and hood on rate arc the main factors which will affect system exhaust.

关 键 词：住宅厨房 集中排气系统 排油烟机 CFD 数值模拟 

分 类 号：TU834.2[建筑科学—供热、供燃气、通风及空调工程]