摘要
在对通风空调系统现有气流组织形式对比分析的基础上,提出了一种基于竖直壁面贴附式送风的新型气流组织形式。采用实验验证后的SST k-ω模型,对不同送风温度和速度下房间温度场和速度场分布进行了数值模拟研究,同时分析了排风口位置、房间尺度、送风口位置对该气流组织形式的影响。研究表明,送风速度是该模式气流组织特性的主要影响因素。房间气流组织效果与房间尺度和送风口位置有较大关系,受排风口位置影响较小。通过合理的参数设置,能够实现竖直壁面贴附式送风模式在现有建筑通风空调系统中的工程应用。
Based on comparative analysis of the existing air distribution modes in ventilation and air-conditioning system, a novel ventilation mode based on vertical wall attached air supply was presented. The velocity and temperature fields under different air supply velocities and temperatures were studied by numerical simulation that adopts the SST k-to turbulence model. In addition, effects of air outlet location, room scale and air diffuser location on airflow patterns were also studied respectively. The current results showed that the air supply velocity played an important role on air distribution characteristics; moreover, room scale and air diffuser location had greater influences on this ventilation mode, while the air outlet location slightly affected this mode. In general, under reasonable parameter settings, the air distribution of vertical wall attached air supply pattern could be used for room ventilation and air-conditioning engineering.
出处
《建筑科学》
CSCD
北大核心
2016年第8期33-39,共7页
Building Science
基金
国家自然科学基金青年科学基金项目"基于柱面贴附射流的送风模式分析与设计原理研究"(51408477)
陕西省自然科学基础研究计划项目"基于城市地下空间空气环境保障的新型气流组织模式研究"(2014JQ7235)
关键词
通风空调
气流组织
壁面贴附式送风
数值模拟
速度场
温度场
ventilation and air-conditioning, air distribution, wall attached air supply, numerical simulation, velocity field, temperature field
