Uncertainty Evaluation of Natural Gas Energy Measurement
LI Chun-hui1,XU Ming2,SHEN Chao2,CHEN Wen-ling3
1. National Institute of Metrology, Beijing 100029, China
2. Metrology Research Center of China Petroleum & Chemical Corporation Natural Gas Branch, Wuhan, Hubei 430073, China
3. Xinjiang Institute of Metrology and Testing, Urumqi 830011, China
Abstract：Based on the general calculation formula of natural gas energy measurement and combined with the actual conditions and experimental results in the field experiment, the uncertainty evaluation of natural gas energy measurement was analyzed in detail. The sources of uncertainty mainly included the volume flow rate, the calorific value per unit volume, the integration method and other related factors under the measurement reference conditions. The complete uncertainty analyses model was presented in this paper, which had significant value for the implementation of natural gas energy measurement in my country.
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2020, Vol. 41 
