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Title: Comparison Of Calculated And Measured Heating Values Of Natural Gas
Author: Donald C. Melrose
Source: 1975 Appalachian Gas Measurement Short Course
Year Published: 1975
Abstract: Analytical data for 879 samples of natural gas were studied to correlate the difference in calorimeter heating value and calculated heating value, with parameters of specific gravity, range of heating value, concentrations of various inert gases, and classification of gases. The differences in instrument and calculated specific gravities were similar in magnitude and algebraic sign to the corresponding differences in heating values. The similarities may be a result of the resolution characteristics of both the higher hydro* carbons and the water that are present in the chromatographic back-flush. The differences of measured and calculated heating values were independent of nitrogen concentrations from 0% to 7% but may be dependent upon concentrations of carbon dioxide that are greater than the Vz% limit of most of the samples in the study.

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