空气比热容比实验的原理和系统误差分析  

The Principles and Its System Error Analysis of Measuring Specific Heat Ratio of the Air

作　　者：邓于[1] 张家伟[1] 吴强[1] 

机构地区：[1]重庆文理学院物理与信息工程系,重庆永川402160

出　　处：《重庆文理学院学报（自然科学版）》2007年第1期35-38,共4页Journal of Chongqing University of Arts and Sciences

基　　金：重庆文理学院教育教学研究项目(编号:05023)

摘　　要：从热力学理论入手,对空气比热容比测定实验仪器和常见的两种实验原理表述进行了分析,给出了实验过程中正确的P-V图和实验状态及其实验原理的正确理解,提出了一种客观的实验理论表述方法.通过对实验仪器的改进,取得了良好的实验结果,实验误差由原来大于7%下降到2%以内.In this paper, based on the theories of thermodynamics, the experimental instruments and two common experimental principles of measuring specific heat ratio of the air are anatomized, and the exact comprehensions of the P - V plots, states and principles of the experiment are also presented. A newmethod to describe the experimental theory is put forward in this paper. The experimental accuracy is deeply improved by the improvements of experimental instrument, for the experimental error is reduced from 7 percent down to 2 percent.

关 键 词：空气比热容比 P—V图 实验误差 实验改进 

分 类 号：O551[理学—热学与物质分子运动论]