Airflow Inside School Building Office Compartments with Moderate Environments
Airflow Inside School Building Office Compartments with Moderate Environments
复制标题
环境温和的教学楼办公室隔间内的气流
DOI：
10.1080/10789669.2008.10391003
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
M. J. Lúcio
中科院分区：
文献类型：
--
作者：
E. Conceicao;V. Vicente;M. J. Lúcio
本文对中等环境下校舍办公隔间内稳态条件下的气流进行了实验和数值分析。实验测试是在开发的实验室中进行的，而数值结果是在开发的数值模型中获得的。通过实验测量风速波动，计算风速均方根、空气湍流强度、通风风险、风速波动频率和风速波动等效频率。使用衰变示踪气体方法和二氧化碳浓度计算平均和局部空气更新率。对三维空气速度和空气更新率进行了数值计算。将这些实验结果和数值结果进行比较，以更好地了解此类车厢内的气流拓扑并评估乘员所承受的舒适度，即热舒适度、局部热不适度和空气质量水平。分析的气流拓扑结构，强制气流入口和出口位于乘员头部上方，分为两个区域：非占用的上部区域，包含气流入口和出口，具有高风速水平，用于促进乘员释放的污染物的排出；而被占用的下部区域，具有低风速水平，用于确保良好的热舒适性并减少局部不适水平，具有将乘员的污染物输送到上部区域的能力。
In this paper, the airflow inside school building office compartments with moderate environments, in steady-state conditions, is experimentally and numerically analyzed. The experimental tests are made in a developed experimental chamber, while the numerical results are obtained in a developed numerical model. The air velocity fluctuations are experimentally measured and the air velocity root mean square, the air turbulence intensity, the draft risk, the air velocity fluctuation frequencies, and the air velocity fluctuation equivalent frequencies are calculated. The mean and local air renovation rates, using the decay tracer gases method with a carbon dioxide concentration, are calculated. The three-dimensional air velocity and the air renovation rate are numerically calculated. Both these experimental and numerical results are compared to better understand the airflow topology inside this kind of compartment and evaluate the comfort level, namely the thermal comfort, local thermal discomfort, and air quality levels, to which occupants are subjected. The analyzed airflow topology, with the air forced inlet and outlet located above the occupants' head level, is divided into two areas: the non-occupied upper area, which contains the airflow inlet and outlet, with high air velocity levels, is developed to facilitate the contaminant extraction released by the occupants, while the occupied lower area, with low air velocity levels, is developed to ensure good thermal comfort and reduced local discomfort levels, with the capacity to transport the occupants' contaminants to the upper area.