化学氧自救器供氧温度理论计算模型  

Theoretical calculation model of the oxygen supply temperature for the chemical oxygen rescuers

作　　者：刘何清 张强 游波 吴世先 黄琼 LIU He-qing;ZHANG Qiang;YOU Bo;WU Shi-xian;HUANG Qiong(School of Resources,Environment and Safety Engineering,Hu-nan University of Science and Technology,Xiangtan 411201,Hunan,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201

出　　处：《安全与环境学报》2021年第1期223-232,共10页Journal of Safety and Environment

基　　金：国家自然科学基金项目(51474105,51704110,51864014)。

摘　　要：针对化学氧自救器供氧温度过高问题,采用了模拟试验与理论分析相结合的方法进行了研究。模拟试验得出了供氧温度分别随KO_(2)药剂量和人体呼吸频率变化的曲线,且供氧温度变化规律明显。基于试验得出的供氧温度变化规律,根据热力学理论,分析了试验装置的产热、散热及热平衡,经过理论推导建立了KO_(2)药剂在试验装置内反应的供氧温度计算模型;并将等条件下的供氧温度计算值与试验实测值进行了对比分析及Pearson相关性检验。结果表明,理论模型计算值与试验实测值吻合程度高,且呈显著正相关;表明推导得出的理论计算模型有较高的准确性。化学氧自救器使用时的产热、散热过程与模拟试验装置相似,基于化学氧自救器的相关热交换参数,理论分析所得供氧温度计算模型可用于工程实际,指导化学氧自救器的改进。The given paper intends to present theoretical analysis and the method for combining the simulation test to solve the problem of high temperature of oxygen supply for the chemical oxygen self-rescuer,for of the oxygen supply temperature change proves in a curve line with the dosage change of KO_(2) and the respiratory rate of the human body through a simulation test,because the changing regularity of oxygen supply temperature is obvious,while the experiments concerned prove highly similar in that the curve line of the oxygen supply testing temperature tends to change with the dosage of KO2 and the respiratory rate of the human body. Thus,according to the thermodynamics theory and on the basis of the variation regularity of the oxygen supply temperature provided by the test,it would be possible to analyze the heat production,dissipation and balance of the testing device.The oxygen supply temperature for the reaction of KO_(2) agent in the test device can be established through the theoretical derivation,whereas the oxygen supply temperature under the same conditions can be determined in comparison with the measured data of the test so as to carry out the Pearson correlation test. Thus,it can be concluded that the calculated value of the theoretical model has to be highly consistent with the measured data value of the experiment,whereas a significant positive correlation can be found existing between the calculated value and the measured value. This may demonstrate that the calculated model derived from the theory should be highly accurate in predicting the outcome of the oxygen supply temperature under the different dosages,the respiratory frequency and the needed available time points. Thus,it can be concluded that the process of the heat generation and the heat dissipation of the chemical oxygen selfrescuer may turn out quite similar to that of the simulation testing device. And,so,based on the relevant heat exchange parameters of the chemical oxygen self-rescuer,the theoretical analysis of the calculation model

关 键 词：安全工程 化学氧自救器 KO2药剂 供氧温度 计算模型 

分 类 号：X965[环境科学与工程—安全科学]