某城市商业综合体公共空间热环境数值模拟

用数值模拟方法,对北京某城市商业综合体内部公共空间空调工况热环境进行了研究,分析了各层不同送风比例下,综合体内部公共空间纵截面温度分布情况和人员活动区域内的温度分布情况。通过比较,确定了满足综合体内部公共空间各层热舒适要求的空调送风方案。数值模拟结果表明,对于城市商业综合体内部公共空间采用各层均匀送风,顶层与公共空间相连的走廊区域温度在夏季不能满足热舒适要求,适当减少内部公共空间下层的送回风量,增加至顶层,在冬夏工况下均可有效改善内部公共空间热环境,增加舒适度,有效解决顶层走廊温度偏高及温度不均等问题。

Numerical simulation of thermal environment for inner public space in an urban commercial complex

Numerical simulation was used to study the thermal environment in air-conditioning condition on an urban commercial complex inner public space in Beijing. The temperature distribution of the inner public space longitudinal cross section and personnel activities regions in different supply air ratio of each layer were analyzed. By comparison, the air supply scheme is determined which can satisfy the public space thermal comfort in each layer. The numerical simulation results indicated that thermal environment of the inner public space in the urban commercial complex can be improved effectively in both winter and summer conditions, the problem of high temperature in the corridor of top floor and the nonuniform temperature can be solved effectively, the level of comfort increased at the same time if reducing supply air volume from the lower floor to the top floor appropriately.