对物质自燃特性参数测定实验项目的改进

Improvement of the teaching experiment for testing the spontaneous combustion characteristic parameters of materials

  • 摘要: 消防工程专业国家级一流本科课程“消防燃烧学”实验环节的“物质自燃特性参数测定”实验项目采用篮热法测试固体可燃物堆垛的自燃活化能,由于实验工作量大,消耗时间长,在实验教学中实施时存在较多困难。为了改进该实验项目,本文设计了一项基于Jones法的自燃活化能测定实验流程,并与篮热法测得的实验结果进行了对比验证。验证结果表明,篮热法和Jones法测得的自燃活化能分别为74.7 kJ/mol和79.3 kJ/mol,二者大小相近。改进后的实验项目可以在2个学时内完成,方便实验教学的组织实施。

     

    Abstract: The experimental program “Testing the Spontaneous Combustion Characteristic Parameters of Materials” utilizes the basket heating method to measure the spontaneous combustion activation energy of solid combustible stacks. However, due to the substantial experimental workload and long duration, there are numerous challenges in implementing this experiment in teaching. To enhance this experimental program, this paper proposes an experimental process for determining spontaneous combustion activation energy based on the Jones method, and compares the experimental results obtained by the basket heating method. The verification results indicate that the spontaneous combustion activation energies measured by the basket heating method and the Jones method are 74.7 kJ/mol and 79.3 kJ/mol, respectively, which are similar in magnitude. The improved experiment can be completed within 2 class hours, facilitating the organization and implementation of experimental teaching.

     

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