室内排烟效率因子研究

Research on Indoor Smoke Exhaust Efficiency Eactor

为合理有效地评估室内排烟系统的性能,采用火灾区域模拟和人员疏散模拟的方法,对比研究了SVE1、L-PFR、EFCS3这3个通风换气因子用以评价室内排烟效果的合理性,得到用L-PFR因子衡量排烟效率时,在排烟面积或排烟速率一定时,单位时间内流过房间的气体量越大,污染物越容易从房间内排出去的结论。在此基础上结合室内排烟的目的,从"以人为本"的角度出发,提出了考虑室内人员因素的"人均换气率(L-PFR(P))"因子,并进行计算分析,结果表明,用新提出的L-PFR(P)因子来评价室内排烟效率是可行的。

In order to evaluate the performance of indoor smoke exhaust system more reasonably, f ire regional simulation method and occupants evacuation simulation method are used, SVE1 , L - PFR, EFCS3 venti lation and venti lation factors were compared to evaluate the effectiveness of indoor smoke. In this paper, when the exhaust gas efficiency is measured by the L - PRF factor, the larger the amount of gas flowing through the room per unit time, the easier the pollutants can be discharged from the room when the smoke exhausted area or the smoke exhausting rate is constant. The conclusion is reasonable. On the basis of this, the factor of ＂ per capita venti lation rate （ L - PFR （ P） ） ＂ factor of indoor personnel was put forward from the point of ＂ hu-man -oriented＂ and through calculation and analysis. The results show that it is reasonable and feasible to evaluate indoor smoke efficiency with the newly proposed L - PFR （P） factor