饱和食盐水比热容测量的不确定度  

Uncertainty a b out Measuring of Specific Heat of Saturation Salt Solution

作　　者：张青兰[1] 武银兰[1] 

机构地区：[1]太原理工大学物理与光电工程系

出　　处：《物理通报》2011年第12期67-70,共4页Physics Bulletin

摘　　要：用一种简易的控温方法实现对饱和食盐水比热容的散热法测量,并对其结果的不确定度进行分析.与文献值比较,该方法所得结果可信,其不确定度主要来源于系统的散热系数及温度的测量.In this paper, the specific heat of saturation salt solution was measured by coolingmethod,and the uncertainly of result was analyzed. It was shown that, the specific heat value of saturation salt solution was approximately 3. 243J/（g · K）, absoluteness uncertainty was 0. 261 J/（g · K）. The reliability of result mainly depended on the experiment system error and measuring of temperature.

关 键 词：比热容 散热法 不确定度 

分 类 号：O645.1[理学—物理化学]