正压送风，中央空调的正压送风是一种空调和通风的工艺要求，即所需空调的场所气压要大于临界区的气压，在保证空调的前提下要不停的有新风补入。
所有防烟楼梯间及消防电梯前室均设正压送风系统。
Before all against smoke stair hall and the fire lift, the room supposes the positive pressure blast system.
楼梯间设置正压送风系统时，楼梯间设置的外窗应明确为固定窗；
When setting positive pressure mechanical air supply system in smoke controlling stair hall, the outer window in the hall must be fixed.
就防烟楼梯间及前室正压送风系统区域烟控模型的算法进行了介绍。
The smoke control model is an important tool to have a smoke control research.
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