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对楼梯间加压送风来防止火灾时烟气侵入楼梯间的防烟方法已被国内许多高层建筑的防烟楼梯间所采用，由于建筑物的外形尺寸、火灾位置及建筑物的室内外温差等参数的变化，对正压送风系统的效能影响很大，本文通过对国内一些高层建筑正压送风系统的实测，总结后提出一套测试方法，用以检验高层建筑正压送风系统的可靠性。
The method of preventing the smoke from invading the stairwell by applying pressure to the stairway to prevent the smoke from entering the stairwell has been adopted by smoke prevention stairwells in many high-rise buildings in China due to the external dimensions of the building, the location of the fire, and the temperature difference between the interior and exterior of the building. Changes in other parameters have a great influence on the performance of the positive pressure ventilation system. This article measured the positive pressure ventilation systems of some high-rise buildings in China and concluded a set of testing methods to test the high-rise building positive pressure ventilation system. The reliability.