基于方形柱面的贴附置换通风模式气流组织设计与应用

摘要

The columns are widely distributed within the architectural space. In order to effectively use them, a novel ventilation mode named square column attached displacement is presented, which can improve ventilation efifciency and create good indoor air qual-ity. The curvature effect of this mode is studied by experimental test, the expressions of parameters such as maximum velocity and excess temperature are obtained. Based on these results, the design principle of this ventilation model is introduced, the design method and pro-cedures are provided, and the design effectiveness evaluation is carried out by using a design example. The current results show the square column attached air curtain ventilation model has the advantages of both mixing and displacement ventilation systems. It can be used in HVAC system design for large space building, aimed to provide a high efifciency ventilation environment with good IAQ.%为了有效利用建筑空间中量大面广的柱体，实现高效节能、高空气品质的通风模式，作者提出了一种基于方形柱面的新型贴附置换通风技术。采用试验测试的方法揭示了该通风模式的曲率效应，拟合得到了轴线速度、剩余温度等参数的计算式。基于此计算式提出了新型通风模式气流组织的设计原理，给出了具体的设计方法和步骤，并通过设计应用实例验证了设计方法的有效性。研究表明，方形柱面贴附通风模式兼具混合通风与置换通风的优点。为大空间建筑通风空调系统设计提供了一种高效节能、良好空气品质的新型气流组织方式。