摘要
通过测量无限大平板冷却过程中表面及中心的瞬态温度 ,同时确定其导热系数λ ,导温系数α和比热容C。对测量误差进行的分析与计算表明 ,在置信概率 95%下 ,α、λ和C的最大相对偏闻分别不大于 3% ,5%和 7%。
The principle and method of simultaneous determination of thermal conductivity λ、thermal diffusivity α and specific heat C by the measurement of transient temperature distribution in the surface and center of an infinite plane wall in cooling process are presented in this paper.The error have been analyzed and computed.The results show that the maximum deviation of α、λ and C is within 3%,5% and 7% respectively while the believe probability is 95%.
出处
《南昌大学学报（理科版）》
CAS
2000年第2期175-179,共5页
Journal of Nanchang University(Natural Science)
基金
南昌大学基础理论基金资助项目
关键词
瞬态温度场
导热系数
测量
物体
热物性
transient temperature distribution
thermal conductivity
relative deviation
