Abstract
Formulas are given for the conditionally-constant values of density under standard conditions as well as for the dynamic viscosity and the adiabatic exponent. The dynamic viscosity and adiabatic exponent depend only on the natural gas temperature and pressure that we recommend be used for mass and volumetric flowrate measurements under standard conditions in gas distribution organizations.
The paper considers the feasibility of correcting meter readings not by entering the daily conditionally-constant composition of natural gas into a calculator, but by correcting the readings of all the instruments participating in commercial operations during the accounting period. This would be done by using correction factors that depend on the density under standard conditions and fixed consumption patterns (absolute pressure and temperature of the gas).
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REFERENCES
All-Russia State Standard GOST 8.563.2-97. GSI (State System for Traceability Assurance). Flowrate and Volumetric Measurement of Liquids and Gases by the Variable Pressure Drop Method. Procedure for Measurements with Converging Devices.
All-Russia State Standard GOST 30319.1-96. Natural Gas. Methods of Calculation of Physical Properties. Determination of the Physical Properties of Natural Gas, Its Components, and Products.
MI 2578-2000. GSOI. Procedure for Measurements of the Quantity of Natural Gas in the Moscow Region by Measuring Systems Based on Converging Devices with Results Recorded on Recorder Diagrams and for Use of Those Results in Distribution of the Imbalance between the Supplier and the Consumers.
A. I. Astashenkov, Izmer. Tekh., No. 1, 27 (2003).
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Belyaev, B.M., Patrikeev, V.G. Influence of Variations of the Composition of Natural Gas from Different Fields on the Results of Mass and Volumetric Flowrate Measurement under Standard Conditions in Gas Distribution Organizations. Measurement Techniques 46, 462–465 (2003). https://doi.org/10.1023/A:1025305214273
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DOI: https://doi.org/10.1023/A:1025305214273