A symmetric dual-channel accelerating rate calorimeter with the varying thermal inertia consideration

Abstract

The thermal inertia determination and correction are the significant steps in accelerating rate calorimetric based kinetics calculation and thermal hazard evaluation. However, the existing kinetics approaches based on the constant thermal inertia ignore the fact that the sample’s heat dissipation is varying during the pseudo-adiabatic reaction. To overcome this shortcoming, an amended thermal inertia expression is proposed and a symmetric dual-channel accelerating rate calorimeter is developed in this article. A novel kinetics approach is presented with the varying thermal inertia consideration based on the measured electrical power data. With the different mass percent DTBP/toluene solutions experiments, the validities and advantages of the proposed calorimetry and the corresponding thermal analysis method are verified. Meanwhile, the challenges in the engineering implementation of this proposed method are analyzed and discussed at the end of the article.