低温CO_2吸收系数与温度的关系

The relationship between low temperature CO_2 absorption coefficient and temperature

针对HITRAN数据库缺乏CO_2在低温条件下的吸收谱线研究数据的问题,对波长位于1 572.34 nm处的低温下CO_2吸收谱线进行了研究,得到250～500 K范围内CO_2吸收系数的温度依赖经验公式.将该经验公式与文献中的实验数据进行计算对比,得到了气体质量分数平均误差为3.305%的对比结果.

This article studied the absorption line of carbon dioxide gas with wavelength at 1 572.34 nm in the low temperature range,which was lack of data for CO2 absorption lines at low temperatures in the absorption spectrum data of HITRAN database.An empirical formula for the temperature dependence of carbon dioxide gas absorption coefficient in the temperature range of 200~500 K was obtained.Finally,the empirical formula was compared with the experimental data in the literature to calculate the gas concentration,by which an average error of 3.305% was achieved.