Metrological Assurance of Gas Calorimeter and Wobbe Index Analyser
https://doi.org/10.20915/2687-0886-2021-17-2-19-32
Abstract
The paper describes research on metrological assurance of such measuring instruments as gas calorimeters and Wobbe index analysers. The purpose of the performed research is development of reference materials for gases with certified value of net volume-basis calorific value traceable to Russian state primary standard. Input set of candidate gases is hydrogen, methane, ethane and propane, as well as the target uncertainty of lower volumetric combustion energy value equal to 0,3 % – both were selected basing on results of metrological characteristics analysis of calorimetric equipment. The certified value of lower volumetric combustion energy is traceable to the State Primary Standard of combustion energy, specific combustion energy and volumetric combustion energy units GET 16. The certified value of selected gases and the uncertainty of this value were estimated with usage of comparing calorimeters for the combustion of high- and low-calorie gases «USVG» and «USNG» included in GET 16. Results obtained during investigational study and reference materials characterisation confirmed the stated accuracy. The continuance in prospect may allow development of reference materials for gas imitating mixtures of natural and casing-head gases as well as include Wobbe index in the list of certified characteristics.
About the Authors
K. A. Mishina Mishina
D. I. Mendeleyev Institute for Metrology (VNIIM)
Russian Federation
Russian Federation
Karina A. Mishina – engineer, D. I. Mendeleyev Institute for Metrology (VNIIM)
19 Moskovsky ave., St. Petersburg, 190005
E. N. Korchagina
D. I. Mendeleyev Institute for Metrology (VNIIM)
Russian Federation
Russian Federation
Elena N. Korchagina – PhD (Eng.), head of the laboratory for measurement standards and scientific research in the field of ombustion calorimetry and high-purity organic substances for metrological purposes, D. I. Mendeleyev Institute for Metrology (VNIIM)
19 Moskovsky ave., St. Petersburg, 190005
Ia. V. Kazartsev
D. I. Mendeleyev Institute for Metrology (VNIIM)
Russian Federation
Russian Federation
Yaroslav V. Kazartsev – researcher, D. I. Mendeleyev Institute for Metrology (VNIIM)
19 Moskovsky ave., St. Petersburg, 190005
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Review
For citations:
Mishina K.A., Korchagina E.N., Kazartsev I.V. Metrological Assurance of Gas Calorimeter and Wobbe Index Analyser. Measurement Standards. Reference Materials. 2021;17(2):19-32. (In Russ.) https://doi.org/10.20915/2687-0886-2021-17-2-19-32
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