高大建筑空间室内气流组织模拟

Simulation of Indoor Airflow Organisation in Tall Building Space

以寒冷地区某办公楼的通高大堂为分析对象,利用CFD数值模拟的方法分析了设计工况及对比工况下室内的温度、风速分布。结果表明,夏季垂直温度梯度及速度梯度较小,人员舒适感较好;冬季由于热水辐射供暖系统的作用,垂直温度梯度相对较小,整个空间温度分布较为均匀。在满足热舒适度前提下,建议夏季送风温度选取18 ℃,冬季送风温度选取28 ℃,并考虑在仅室外气候条件较为恶劣时开启地暖,以利于节能。研究结果可为高大空间应用辐射供暖加空调送风系统的设计及优化提供一定参考。

This article takes the high-rise lobby of an office building as the analysis object,and uses CFD numerical simulation method to analyze the indoor temperature and wind speed distribution under design and comparison conditions.The results show that in summer,the vertical temperature gradient and velocity gradient are relatively small,resulting in better personnel comfort;In winter,due to the effect of the hot water radiation heating system,the vertical temperature gradient is relatively small,and the temperature distribution in the entire space is relatively uniform.Under the premise of meeting thermal comfort,the summer air supply temperature can be selected as 18℃,and the winter air supply temperature can be selected as 28℃.It can also be considered to turn on floor heating when the outdoor climate conditions are relatively harsh,in order to save energy.The research results of this article can provide a certain reference for the design and optimization of radiation heating and air conditioning supply systems in tall spaces.