高层建筑前室加压送风口全开时风量分配的研究

Study of air distribution for fully opened Pressurization outlets in antechambers of tall buildings

本文按《高层民用建筑设计防火规范》(以下简称《高规》中表8.3.2—3、4的加压送风防烟方案,即消防电梯前室及防烟楼梯间采用自然排烟,前室或合用前室不具备自然排烟条件时的送风作为2个典型案例,以前室风口全开,按流体力学理论研究各层风口的风量分配情况。研究结果表明风量分配极不均匀,严重影响加压防烟的可靠性。为进一步采取措施解决加压送风防烟问题,提供了依据。

The according to the charts 8.3.24 of the code for fire protection design of tall building, presents two typical examples for the pressurization air supply have been presented. Air distribution of the pressurization air outlet opened fully in each antechamber. Research reveals that air distribution is so uneven that the smoke control using pressurization air supply becomes irresponsible. Proposes basis to settle the smoke control.