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| Uncertainty Evaluation on the Calorific Value of Natural Gas by GC |
| YAN Wen-can1,WANG Chi2,PEI Quan-bin1,WANG Hai-feng2,LI Chun-hui2,SHEN Chao1 |
1. Sinopec Branch of Natural Gas Measurement Research Center, Wuhan, Hubei 430073, China
2. National Institute of Metrology, Beijing 100029, China |
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Abstract 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%.
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Received: 30 November 2016
Published: 11 February 2018
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2018, Vol. 39 
