中庭气流组织数值模拟分析与节能优化设计

Numerical Simulation Analysis And Energy-saving Optimization Design Df Atrium Air Distribution

采用大面积的玻璃屋顶或玻璃幕墙,中庭往往具有复杂的热环境。为此采用计算流体力学方法对比封闭中庭在空调方式下,有无屋面排风的速度场、温度场模拟结果并分析得出:夏季工况中庭可通过设置屋顶排风的方式,降低室内设计冷负荷,从而节约空调能耗;对于冬季工况,屋面是否设置排风,对中庭的气流组织影响不大,可以关闭屋顶的排风设施,节约能耗。

Using large-area glass roofs or glass curtain walls,atriums often have complex thermal environments.To this end,the computational fluid dynamics method was used to compare the velocity field and temperature field simulation results of closed atriums with and without roof exhaust in air-conditioning mode,and the analysis concluded that:for summer conditions,the atrium can reduce the indoor design cooling load by setting up roof exhaust,thereby saving air conditioning energy consumption;for winter conditions,whether the roof is equipped with exhaust ventilation will have little impact on the air flow organization of the atrium,the roof exhaust can be turned off to save energy consumption.