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Using BWRS state equation, as well as two specific heat correlations, the temperature drop due to Joule-Thomson effect in natural gas pipeline is calculated and the algorithm of this is proposed. As for the west-to-east gas transmission pipeline, comparing the result calculated using the algorithm above with practical value measured, we find that the algorithm developed is steady and has a high accuracy of maximum deviation less than 1.42℃, thus the algorithm can provide an accurate result for temperature drop calculation. KEYWORD: Gas pipeline; simulation; algorithm for temperature drop due to throttling; BWRS state equation; thermal physical parameters

Research on Algorithm of Temperature Drop due to Throttling in Natural Gas Pipeline