热重分析仪传热模型及测量误差分析  

ANALYSIS OF HEAT TRANSFER MODEL AND MEASUREMENT ERROR FOR THERMOGRAVIMETRIC ANALYZER

作　　者：许兰淑 杨晓晓 刘羽冬 李瑞[1] 

机构地区：[1]北京林业大学材料科学与技术学院

出　　处：《太阳能学报》2018年第1期90-94,共5页Acta Energiae Solaris Sinica

基　　金：国家林业局公益性行业科研专项(201204804);中央高校基本科研业务费专项资金(td2011-12)

摘　　要：基于热重分析仪的内部构造及工作原理,通过试验验证,分析热重曲线误差产生的主要因素,并建立试样在稳定载气环境中的传热模型。根据传热理论进行数值计算和模拟,得出120℃/min升温速率下试样温度测量误差。对生物质裂解等热转化快速升温过程中的热重分析数据修正提供依据。Based on the internal structure and working principle of the thermogravimetric analyzer, the influence factor of the thermal gravimetric curves was analyzed through experiment study, and the heat transfer model of the samples in the stable carrier gas environment was established. According to the heat transfer theory, we carry out the numerical calculation and simulation to obtain the temperature measurement errors of the samples at the heating rate of 120 ℃/min, which provide the basis in the data correction of the thermal gravimetric analysis for the thermal conversion, such as biomass pyrolysis, etc.

关 键 词：热分析 误差 传热 修正 

分 类 号：TK6[动力工程及工程热物理—生物能]