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Experimental study on fire smoke movement in a multi-floor and multi-room building

science china(Technological sciences) 2005年第3期48卷 292-304页

作者： zhong maohua 1, 2.,{2., liu tiemin 1 , wei xing 1, 2.& liao guangxuan 2.1. national center of safety science and technology, state Administration of work safety, beijing 10002., china 2. state Key Laboratory of Fire {12., University of {12. and technology of china, Hefei 2.002., china 1. national center of {2. science and technology State Administration of Work Safety 100029 Beijing China 2. state Key Laboratory of Fire science University of Science and Technology of China 230026 Hefei China

Fire smoke movement of multi-floor and multi-room (MFMR) fire was studied at the model test building in state Key Laboratory of Fire science (SKLFS). The ingredient, temperature, air pressure difference and air velocity of smoke were measured and analyzed. Meanwhile, the hazard of smoke ingredient to exposed occupants was analyzed based on the {2. standard, Occupational Exposure limit for Hazardous Agents in the workplace (GBZ2.2.02.. The experimental results showed that the maximum temperature difference in MFMR fire was located along the vertical height from the fire source. With the spreading and diffusion of smoke, the temperature of smoke layer would tend to be no difference. In the fire of woodpile and kerosene, the main smoke ingredients such as SO 2., CO and CO 2.would first exceed human’s average physiological limit, while smoke ingredients such as NO and NO 2.would come behind. Because of the higher fluctuation range and frequency of air pressure difference of smoke in multi-layer building fire, the fire smoke would spread around everywhere of the passageway and made the human evacuation more difficult.

关键词： multi-floor and multi-room,fire experiment,smoke spread,smoke toxicity.

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