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Title: Non-Iterative Calculation Of Com Pressibility Factors And Isentr Opic Exponents Of Natural Gases Complying With AGA8-92DC Method At Decent Uncertainties
Author: Masahiro Ishibashi
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: A simple 2D numerical table was created in order to calculate c ompressibility factors of natural gases of various compositions only by simple arithmetical opera tions without iterative calculation at temperatures from -10 C to +80 C and pressures up to 10 MP a. The table uses two variables similar to pseudo-reduced critical pressure and temperature. Th e pseudo critical temperatures and pressures of each component to calculate the pseudo-reduced parameters were modified from the values opened in literatures to make the table error f rom the calculation results by AGA8-92DC method smaller than 0.5% for pipeline quality gases comprised of CH 4 and other 14 important components. More than 65.5 thousands natural gases within the pipeline quality were virtually created and all t he compressibility factors were calculated by AGA8-92DC method to determine the table values and estimate their errors

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