实际烟气生成量计算方法的商榷

火灾烟气是火灾时所产生的气体和悬浮在其中的烟粒子的总称，是燃烧和热解产物的混合物。烟气量的大小取决于可燃物本身的燃烧性能、空气供给量等。火灾烟气具有缺氧、毒害、尘害、高温的特点，加上火场火灾烟气的减光性和恐怖性，使火灾烟气成为火灾人员伤亡的最主要原因，为此防排烟工程的设计对建筑消防安全非常重要，实际烟气生成量计算是防排烟工程设计的理论基础，就目前一些文献对实际烟气量计算方法存在的不足进行了探讨，并提出了一个新的计算方法，对两种方法的计算结果进行了对比，得出结论认为，计算实际烟气量应从实际空气供给量是否过剩或不足两种情况分别进行考虑计算。

Discussion on calculation method for actual smoke production

Fire smoke is a general term of gas and suspending granule in the scene of a fire, and it is the admixture of burning and deeompound offspring. Smoke production lies on the combustibility of combustible substance and airsupply, etc. Fire smoke has the characteristic of oxygen deficit, poison, dust hazard and high temperature, with the addition of the light attenuation and funk of fire smoke, so fire smoke is the main cause of casualty in the scene of a fire, and the design of smoke prevention and discharge is very important in architecture fire safety. Actual smoke production calculation is the theory foundation in the design of smoke prevention and discharge. Some discussion was done in this thesis, aiming at the method of actual smoke production calculation in some documents. The authors put forward their calculation method, comparing the two calculation results and concluding that whether the air was superfluous must be considered in calculating actual smoke production.