Analysis of Calorimetric Method of Measurement of Natural Gas Calorific Value

Abstract

The article considers the current methods of measuring the calorific value of natural gas which are valid in the upto-date gasometry. The procedure for measuring the gross and net volume-basis specific calorific value of natural gas by the calorimetric method is analyzed. It is shown that to increase the accuracy and validity of measurement results, the experiment to determine the values of gross and net volume-basis specific calorific should be performed for at least 5 samples of the investigated gas. A methodology for estimating the accuracy of measuring the gross and net volume-basis specific calorific values of natural gas by the calorimetric method by finding estimates of the uncertainty of the obtained measurement results taking into account both random and systematic influencing factors are developed. The uncertainty budgets for measuring the gross and net volumebasis-specific calorific values of natural gas have been developed for the practical implementation of the methodology. The results of experimental studies of samples of one of the natural gas fields are given and the objective values of the gross and net volumebasis specific calorific with estimates of extended uncertainty are obtained.

A study of operational decisions of city gas operators under the energy metering and pricing model

“…Yang et al, 2023 propose a graph neural network based calorific value metering method for natural gas. Motalo and Motalo (2021) propose an accuracy estimation method for measuring the gross and net specific calorific value of natural gas by calorimetry. The method is valid for up-to-date natural gas metering.…”