非稳态法与准稳态法测量热系数

THE MEASUREMENT OF THERMAL COEFFICIENTS BY NONSTABLE STATE METHOD AND QUASI-STABLE STATE METHOD

关键词:  热物理性质  测试设备  计算方法

Key words:  Test set  Calculation method  Themophysical property

摘要:

从理论和实验分析了平面热源非稳态法和准稳态法测量热导率及比热容等热系数的问题．并从主测量设备到测试、计算方法提出改进，以简化测试计算，提高测试精度。此外，还比较了两种方法的优缺点，明确了各自应用的条件和范围。

Abstract:

n this paper, it is discussed to determine the thermal coefficients,such as thermal conductivity, specific thermal capacity and so on, by nonstable state method and quasi--stable state method in plane heat source. In order to simplify the calculation and to improve the accuracy, it is proposed to improve the main instruments and the method for measurement and calculation. In addition, the merits and defects of two methods are compared. Their respective appropriate measure conditions and ranges are also proposed.