Uncertainty Evaluation on Calorific Value of Fuel Gas by GC
According to the carbon emission management requirements,enterprises need to regularly measure the low calorific value of fuel gas.In this paper,a method for determining the calorific value of fuel gas is proposed by gas chromatography.Uncertainty is an important indicator to measure the reliability of test results.The sources of uncertainty in the determination of calorific value of fuel gas are analyzed by modern mathematical statistics,and the combined uncertainty is calculated by various relative uncertainty components,and its quantitative evaluation is carried out.The results show that the uncertainty of the calorific value of fuel gas is related to the content of components.It is of guiding significance to analyze the accuracy of the results by studying the sources and evaluation methods that affect the uncertainty of the calorific value of fuel gas.