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地一下室通风排烟系统挡烟垂壁有必要安装吗？麻烦说说。

地一下室通风排烟系统挡烟垂壁有必要安装吗？麻烦说说。

浏览：46次 | 提问时间： 07-28 04:17

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4个答案

Tearssmle 07-28 04:18

地下室防排烟系统要是可以使用自然排烟的，则采用自然补风；采用机械排烟的，应该机械补风。自然排烟和补风都是属于条件好、风量不大的情况。地下室只要超过200平就难以采用自然排烟方式。

雷雨天 07-28 04:27

1.系统划分通风排烟系统划分应结合建筑防火分区来考量，做到既有利于通风系统兼作排烟系统，又不会出现排烟风管跨越防火分区的现象。
2.通风方式平时通风采用均匀排风，即地下室均匀设置排风管及排风口，平时通风用，火灾时兼作排烟风管及排烟口；地下一层考量由车道自然进风，其它层由火灾时进风系统兼作平时进风。
3.排风排烟机及进风机设置风机选型：排风排烟风机可选离心风机或者高温轴流风机。普通离心风机即可满足排风排烟要求，但大风量离心风机只能安装在地面，占地较大，需要较大机房。

花湮苍笙泪 07-28 04:35

挡烟垂壁是指用不燃烧材料制成，从顶棚下垂不小于500mm的固定或活动的档烟设施。活动挡烟垂壁是指火灾时因感温，感烟或其他控制设备的作用，自动下垂的挡烟垂壁，就算是在地下室，这个挡烟垂壁还是很有必要安装的，并且在突发事故发生时，它起的作用是非常大的，在安装时一定要先检测好，以防万一。

没走远 07-28 04:43

平时通风采用均匀排风，即地下室均匀设置排风管及排风口，平进通风用，火灾时兼作排烟风管及排烟口；地下一层考量由车道自然进风，其它层由火灾时进风系统兼作平时进风，机械进风系统可不接送风管或接一小段风管相对集中送风，此通风方式比均匀，集中排风效果会好。另外，每个防火分区即对应一个排风，排烟系统及进风系统，应设置进风竖井，排风竖井，进风口应设在地面洁净处，若能与地下主楼有一定距离更好，其受火灾气影响会小；若能与地面主楼有一定距离更好，其受火灾烟气影响会小，排风口位置应高于附楼层面，以减少排风对地面环境影响。

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地一下室通风排烟系统挡烟垂壁有必要安装吗？麻烦说说。