摘要
在对现有通风空调系统常用气流组织形式对比分析的基础上,提出了一种新型的竖直壁面贴附式送风模式.通过全尺寸实验测试的方法,研究了不同送风速度下竖直向贴附区和水平向空气湖区的三维速度场特性,得到了用于该模式定量研究的轴线速度衰减、送风主体厚度扩展等气流组织特性参数的计算式,为实际工程设计应用奠定了基础.研究表明,竖直壁面贴附式送风在工作区能够形成类似于置换通风的气流组织分布,同时采用条缝风口送风时具有二维特性,研究范围内偏转段的存在不会对气流组织产生影响,该模式可以近似按冲击射流理论进一步拓展研究.
Comprehensive utilization of the advantages of traditionally distinct airflow patterns using in HVAC system, a novel ven- tilation mode based on attached air curtain is presented in this manuscript. Full scale experimental is used to study the three-dimensional velocity field distribution of this mode in vertical wall-attached and horizontal floor-attached zone. The expres- sions of maximum velocity decay and main body thickness extension are obtained. The current studies show that the attached air curtain ventilation model can form the similar air distribution as displacement ventilation system in occupied zone. It has two-dimensional performance with using slot outlet. Meanwhile, the existed deflecting region has little influence on airflow characteristics of this ventilation model, and it can be treated as impinging jet in the further study.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2015年第6期879-884,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51408477
50778145)
陕西省自然科学基础研究计划项目(2014JQ7235)
陕西省教育厅专项科研计划项目(14JK1415)
西安建筑科技大学科技项目(QN1418)
关键词
通风
气流组织
竖直壁面贴附
全尺寸实验
流动特性
ventilation
air distribution
attached air curtain
full scale experimental
airflow characteristics
