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New approach to a problem of heat transfer with chemical reaction in a cylinder of finite dimensions

机译:有限尺寸圆柱体中化学反应传热问题的新方法

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摘要

The three-dimension heat transfer problem of non-isothermal decomposition for a solid cylindrical particle was studied. The non-stationary thermo-chemical process with high activation energy in the particle was described by the system of two non-linear integro-differential equations over the temperature and material density. The solution of these equations was obtained by the semi-analytical method. The influence of chemical reaction parameters on the temperature field inside the cylinder was established. The numerical simulation was carried out for a solid particle heated with linearly increasing temperature from 30 to 700 °C. Special attention was paid to the spatial and time dependent distributions of the temperature field for different heating rates. This approach can be applied for kinetic parameter estimation of thermogravimetric measurements.
机译:研究了固体圆柱颗粒非等温分解的三维传热问题。通过两个在温度和材料密度上的非线性积分微分方程组,描述了粒子中具有高活化能的非平稳热化学过程。这些方程的解是通过半解析法获得的。建立了化学反应参数对气瓶内部温度场的影响。对从30到700°C线性升高的温度加热的固体颗粒进行了数值模拟。特别注意了不同加热速率下温度场的空间和时间依赖性分布。该方法可用于热重测量的动力学参数估计。

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