高原低气压环境室内富氧的安全氧气体积分数上限  

Maximum safe concentration of oxygen-enriched atmosphere in high altitude

作　　者：杨雄[1] 刘应书[1] 沈民 刘文海[1] 张辉[1] 李永玲[1] 孟宇[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]青藏铁路公司劳卫部,西宁810007

出　　处：《北京科技大学学报》2009年第11期1467-1471,共5页Journal of University of Science and Technology Beijing

基　　金：国家科技支撑计划资助项目(No.2006BAC07B01)

摘　　要：为了解决高海拔地区的富氧安全问题,通过实验模拟高原低气压环境,研究了滤纸、棉布和涤卡在富氧环境下燃烧速度的变化情况.由实验可得,氧分压不变时,随着海拔的升高,材料的燃烧速度显著加快.结果表明,在高海拔地区,富氧到与一个标准大气压中氧分压一致,会产生火灾危险.通过对实验数据的分析,得出了高原低气压环境下室内富氧的安全氧浓度上限.In order to reduce the possibility of fire hazards in oxygen-enriched atmosphere, the burning rate of thin materials such as filter paper, cotton fabric and Dacron khaki in low barometric pressure and oxygen-enriched atmosphere was studied experimentally. The results show that the burning rate increases significantly with increasing altitude when the partial pressure of oxygen is constant. It is indicated that fire hazards will be caused in high altitude if the oxygen partial pressure is increased up to the oxygen partial pressure under the condition of the standard atmospheric pressure. The maximum safe concentration for oxygen-enrichment in high altitude was obtained from the analysis of experiment results.

关 键 词：高原 富氧 氧浓度 浓度上限 燃烧速度 

分 类 号：X932[环境科学与工程—安全科学] TK16[动力工程及工程热物理—热能工程]