过渡季节隔板式工位空调房间气流组织的数值模拟

Numerical simulation of the airflow distribution in a partition-type task-ambient air-conditioned room in transitional seasons

现代办公楼由于室内发热设备增多,部分房间在过渡季节也需要制冷,传统空调按夏季工况设计选用的设备容量较大,不能适应过渡季节小负荷运行的需要。工位空调是一种人性化的空调形式,直接将新鲜空气送到人的呼吸区,在过渡季节通过工位空调,充分利用室外新风消除室内负荷是一种可行的空调方式。利用CFD仿真软件对一间使用隔板式工位空调办公室的过渡季节的温度场、速度场进行仿真,得出了空气温度、流速的分布图,并对模拟房间进行了实验测试,对模拟结果与实测结果进行了分析比较。分析结果表明模拟值与实测值的吻合度较好,认为该空调房间的气流组织是符合要求的。最后指出,仿真应该和实验有机的结合起来,才能更有效的解决专业问题。

With the increase in indoor heating installations in modem office buildings, some rooms need air-conditioning even in transitional seasons. Traditional air conditioning used high-capacity equipment in term of summer tasks can not adapt the requirement of small loads in transitional seasons. The task-ambient air conditioning is a personalized air-conditioning mode which directly delivers fresh air to hominine breathing area. It is a feasible air-conditioning mode which makes the best of outdoor air to eliminate indoor load. In this paper, the temperature and velocity distributions in a partition-type task-ambient air-conditioned room in transitional seasons were simulated by the CFD method. Moreover, experiments on the temperature and velocity distributions in the room were carried out, and a comparative analysis of the predicted and measured results was made. It is concluded from the analysis that the predicted values agree fairly well with the measurements, and the airflow distribution in the room is regarded as meeting the demands. The simulation should be organically combined with experiments to solve the professional issues more effectively.