Good fire performance of ventilation duct 1 in the power house: at present, the common problem is that the combustion performance and fire resistance limit of the finished ventilation duct have not been tested by the relevant departments, and the combustion performance and pipe wall thickness of some ventilation duct materials do not meet the requirements.

　　进行应用的厂房通风管道，在很大的程度上其实也就是能直接的就减少地下室通风上部空间占用以及其风管用量。地下室通风方式合理，就其在进行布置的时候，排风管及排风口，平时排风用，火灾的时候必然会兼作排烟风管与排烟口。增加了室内空间，密闭性好、不返烟、不返臭，能大幅度改善室内环境。

　　To a large extent, the ventilation duct of the workshop which is applied professionally can directly reduce the occupation of the upper space of the basement ventilation and the amount of its air duct. The ventilation mode of the basement is reasonable. When it is arranged, the exhaust duct and air outlet are usually used for air exhaust. In case of fire, they must be used as both smoke exhaust duct and smoke outlet. The indoor environment can be greatly improved by increasing the indoor space, good airtightness, no return of smoke and odor.

　　在进行厂房通风管道1设计的时候，污水处理设备还要考虑一下排风、排烟方面的措施。对于普通离心风机本身也就是能满足排风排烟方面的要求，但是大风量离心风机只可以安装在地面上，不过就其占地比较大，需要较大机房，高温轴流风机为消防专用风机，这时候也就是能满足在280℃ 烟温之下运行30 min的要求

　　In the design of ventilation pipe 1 of the power house, the measures of air exhaust and smoke exhaust should be considered for the sewage treatment equipment. For ordinary centrifugal fans, they can meet the requirements of exhaust and smoke exhaust. However, large volume centrifugal fans can only be installed on the ground, but they occupy a large area and need a large machine room. High temperature axial flow fans are special fans for fire protection. At this time, they can meet the requirements of 30 min operation under 280 ℃ smoke temperature