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The high-rise buildings in the event of fire, the fire spread quickly, evacuation routes, will cause serious casualties and property losses. In order to solve the problem of the high-rise building evacuation difficult, both domestic and international experts and scholars Fire elevator evacuation this idea. Although China is now the Fire Services Act, the elevators can not be used for fire evacuation, but if it is guaranteed the the elevator safety of the evacuation process, a comprehensive evacuation elevators and stairs will shorten the evacuation time. Elevator security guarantees, including many aspects, such as elevator power supply facilities, smoke control systems, etc. In this paper, the elevator shaft pressurization air supply security the smoke control aspects of the research and analysis. First, a brief introduction of the high-rise building fire smoke spread characteristics, the driving force, FLUENT fluid simulation software. Then consider the elevator piston effect, stack effect, buoyancy, and factors such as the impact of the elevator shaft pressurization air supply, simulation and test methods, the different conditions of the influencing factors of the high-rise building elevator shaft pressurized air supply smoke control study , including: the elevator car does not move, the uplink and downlink; different elevator speed. Pressurized air supply pre-test trials for the elevator shaft in the Ministry of Public Security Sichuan Fire Research Institute senior test tower, fire source is diesel combustion elevator Inoue square pressurized air supply, testing with a representative floor elevator shaft, elevator chamber, respectively, with the differential pressure of the walkway, according to whether the alarm action judgment the blast whether effective smoke suppressant. The test main purpose is the analysis of the flue gas from other sources may be encountered in actual fire spread to the elevator shafts, fans, elevator operation, pressure relief, and at the same time, the test results with the same condition simulation results verified by comparing the simulation results is reasonable. This paper, using the FLUENT software simulation method for the elevator shaft to pressure air supply study, the use of the dynamic mesh simulation of the elevator car is running, set by gambit meshing, boundary conditions, computational model selection model to simulate fire different pressurized air supply conditions to determine the final air volume and the elevator shaft and blowing to effectively prevent flue gas into the critical pressure differential. Fire test and FLUENT analog integrated research, analysis of smoke spread under different conditions, analysis of the elevator shaft, elevator room differential pressure changes of the aisle, the final main draw elevator shaft by simulating pressurized air supply effectively prevent flue gas enters the critical state, and the provision of related technical parameters. The study has some practical significance and economic significance of the paper, will standardize improved play an important role, and high-rise building, firefighters, fire and rescue personnel to use the elevator for safe evacuation of important technical demonstration.
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