新型置换通风系统耦合作用机理分析研究  

Study on the Coupling Mechanism of the New Displacement Ventilation System

作　　者：王智伟[1] 郭聪[1] 

机构地区：[1]西安建筑科技大学,陕西西安710055

出　　处：《流体机械》2010年第6期1-5,10,共6页Fluid Machinery

基　　金：陕西省教育厅专项科研计划项目(07JK297);西安建筑科技大学基础研究基金项目(JC0710)

摘　　要：建立了办公室房间侧墙上置风口置换通风方式试验模型,测试了不同负荷情况下房间非等温送风射流的速度分布和温度分布。利用无因次速度变化曲线,分析了送风射流的发展规律,依据送风射流边界层理论,分析了房间内送风射流与周围空气热质交换以及送风射流与热羽流对房间温度分层的影响,阐明了新型置换通风系统耦合作用机理。The experimental model of the displacement ventilation system with high sidewall outlet used for a office room was built,the velocity distribution of the non-isothermal air supply jet and the temperature profile in the room under different load conditions was tested.Using dimensionless velocity change curve of the ventilation jet,the air supply jet flow regulation was analyzed,and the heat and mass transfer between air supply jet and ambient air in the room based on the boundary layer theory of air supply jet was analyzed.The influence of air supply jet and thermal plume on the thermal stratification was explained,the coupling mechanism of the new displacement ventilation system was presented.

关 键 词：上置风口 置换通风 非等温送风射流 热质交换 耦合作用机理 

分 类 号：TH4[机械工程—机械制造及自动化]