摘要
本研究针对剧场建筑空间的置换空调方式中两类典型的送风系统（侧送风和座椅送风）,以实际工程项目为例,应用实测,实验室实验,CFD等手段进行了考证研究。本文作为第一部分发,以侧送方式的置换空调系统为考察对象,分析了对一可收容560席的音乐大厅实施的实测结果,考证了该空调系统方式的室内温度分布的特征及通风换气效率的优越性。确认了与传统的混合式空调通风系统的结果相比,采用置换空调时呼吸区域的局部空气龄仅为前者的1/3,空间的温度,局部空气龄在水平方向呈均匀分布,在垂直方向上虽存在温度梯度分布,但在舒适性允许范围内（小于3℃）。从而得出结论,即使在人员密集的高热负荷剧场空间,置换空调系统的优势也得到发挥。
The purpose of this study is to identify the ventilation effectiveness of a displacement ventialtion system in a concert hall with 500 seats by full - scale field measurement. From the measured concentrations, the local mean age of air at the breathing point with the displacement ventilation system was found around one third of that of air with the fully mixed condition. No significant difference was found in local mean age of air on horizontal distribution in the occupied zone. The measured results of horizontal temperature distribution were almost unifrom, while those of vertical tempperature distribution were within an acceptable range in the occupied zone and quite high above it. The experimental findings suggest that the displacement ventilation system can be adequately operated with a relatively high cooling load to provide acceptable conditions of indoor air quality.
出处
《建筑热能通风空调》
2002年第3期1-4,共4页
Building Energy & Environment
关键词
剧场
置换
空调系统
地上侧送风
空气交换效率
displacement ventilation air- conditioning system,hall,wall diffuser, field measurement,mean air age, air change efficiency.
