The Influences of Temperature, Concentration and Pressure Uncertainties on the Measurement Results of Wavelength Modulation Spectroscopy  

作　　者：CHE Lu DING Yan-Jun PENG Zhi-Min 车璐;丁艳军;彭志敏(State Key Laboratory of Power Systems,Department of Thermal Engineering,Tsinghua University,Beijing 100084)

机构地区：[1]State Key Laboratory of Power Systems,Department of Thermal Engineering,Tsinghua University,Beijing 100084

出　　处：《Chinese Physics Letters》2012年第6期272-275,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 51176085;China Postdoctoral Science Foundation(No 2011M500312)。

摘　　要：Gas temperature,species concentration,and pressure uncertainties inevitably affect the measurement results of wavelength modulation spectroscopy.We analyze and calculate the influences of these uncertainties on CO_(2) concentration and temperature measurement results.Calculation results show that uncertainties in the pressure and CO_(2) concentration have little infiuence on temperature measurement results.On the contrary,CO2 concentration measurement results are notably influenced by pressure uncertainty,and greatly influenced by temperature uncertainty.To solve these problems in the temperature,species concentration,and pressure uncertainties,we take the experimental data from the previous study and analyze them using the iteration method with the purpose of obtaining the optimal values of gas temperature and CO_(2) concentration.

关 键 词：SPECTROSCOPY ITERATION optimal 

分 类 号：TG1[金属学及工艺—金属学]