用热线法测定气体热导率的仪器改进  

Hot Line Method is Used to Test the Gas Thermal Conductivity Instrument Improvement

作　　者：卢锦杰 竺江峰[1] 李雪梅[1] 

机构地区：[1]浙江海洋学院,浙江舟山316000

出　　处：《大学物理实验》2016年第2期62-66,共5页Physical Experiment of College

基　　金：浙江省自然科学基金资助(LQ16A050001)

摘　　要：实验用室内温度作为测量室外壁温度t2,经过经验系数修正得到数据来测定空气的热导率误差比较大,现采用在测量室管壁上加装一个温度传感器,以数显温度作为实验中t2的方法来计算气体的热导率。两种方法加以比对,探究相同环境下的两者误差,最后提出实验改进方案。Because the experiment measured with indoor temperature as outdoor wall temperature t2 ,empirical coefficient correction to obtain data to determine the thermal conductivity of air error is large,we use on the measuring chamber wall with a temperature sensor,temperature display as experiment t2 method to calculate the thermal conductivity of the gas.To compare two methods,explore the error under the same environment,and fi-nally put forward the improvement project of the experiment.

关 键 词：气体热导率 热线法 外推法 测量室的外壁温度 

分 类 号：O4-33[理学—物理]