穿孔幕墙对通风系统附加阻力的计算方法

摘要

Perforated curtain applied in building facades will increase the resistance of the ventilation system. Based on the principle of porous medium model, a calculation method for additional resistanceΔζof ventilation system after installed perforated walls is proposed, and the curves represent for the relationship between coefficient C, permeability α and each parameter of perforated walls have obtained. An example is proposed to illustrate the relationship between Δζ and installation distance L of curtain wall.%穿孔幕墙应用于建筑外立面会增加通风系统的阻力。基于多孔介质模型原理，提出了一种穿孔幕墙对通风系统附加阻力∆ζ的计算方法，确定了压强跃升系数C、渗透率α与穿孔幕墙各条件之间的关系，并以一个算例说明了∆ζ与幕墙安装距离L的关系。