摘要
根据天然气能量计量的研究现状和应用需求,提出了一种天然气发热量测量方法。该方法采用气相色谱仪测量天然气高位发热量,使用不同热值的标准气体对气相色谱仪进行标定,验证了标准物质的一致性及仪器的测量能力。对天然气发热量的测量结果进行不确定度评定,结果表明:在线气相色谱仪的扩展相对不确定度在0.15%~0.30%范围内。
According to the current status and requirements of energy determination of natural gas, the measuring method of the calorific value of natural gas was investigated. The gas chromatograph （GC） was used to measure high calorific value. The GC was calibrated with standard gas with different calorific value in order to verify the consistent of the standard gas and the measurement accuracy of GC. The uncertainty evaluation method of the natural gas calorific value was presented. The results of the analysis showed that the relative expanded uncertainty of measurement results from on line GC could be within 0.15%～0.30%.
出处
《计量学报》
CSCD
北大核心
2018年第2期280-284,共5页
Acta Metrologica Sinica
基金
中国石化股份公司科研项目(714024)
关键词
计量学
发热量
能量计量
气相色谱仪
天然气
不确定度
metrology
calorific value
energy determination
gas chromatograph
natural gas
uncertainty
