![]() ![]() That adopts a chandler manual chilled mirror instrument was built In Statoil R&D laboratories, a customized apparatus Uncertainty of which was better than ☐.1 ☌, evoking the The data published by Aliva 2− 8 were determined by an automatic chilled mirror instrument, the claimed Institutions that have reported the comprehensive dew point curveĭata until now. To the best of our knowledge, there are only two Pressures is common, whereas the systematical study of the dew pointĬurve containing dozens of dew point data under pressures up to cricondenbar 1 The determination of HCDP at one or several specific The most well-known method to directly determine the HCDP. To obtain accurate HCDP value is of great importanceįor natural gas engineers to gauge whether the operational parametersĪre optimal and to further guarantee the efficiency and safety of HCDP of relatively heavy natural gases in low-pressure and high-pressure Whereas PSRK and SRK–Twu are recommended for calculating the GERG-2008 is recommended for HCDP prediction of relatively lean gas, (AAD): 1.44 ☌) for SNGs, and PSRK and SRK–Twu fits theĮxperimental data best for RGs (overall AAD: 2.50 ☌). GERG-2008 has the best performance (overall average absolute deviation (under 6.0 MPa), and the reasons for that difference are discussed.Įvaluation results reveal that among the eight prediction models, Prediction deviation of these models in the high-pressure region (pressureĪbove 6.0 MPa) is observed compared to that in the low-pressure region Statistical associating fluid theory (PC-SAFT) models. (TST), predictive SRK (PSRK), GERG-2008, PSRK, and perturbed-chain (SRK), SRK–Twu, Peng–Robinson (PR), Twu–Sim–Tassone HCDP prediction models including Soave–Redlich–Kwong Points from 14 RGs is used to evaluate the performance of eight different One set of data containing 712 dew points from 28 SNGs and 334 dew Natural gases (SNGs) and one real gas (RG) are determined first. HCDP curve data of three gravimetrically prepared synthetic On more than 1000 dew points data have been done to improve the aforementionedĭilemma. Work by use of an improved test system and model evaluation based Proper prediction models remains unclear. ![]() However, the comprehensiveĮxperimental HCDP curve data are still rare, and knowledge about adopting Measuring and predicting the HCDP accuratelyĪre essential for the natural gas industry. (HCDP) is one of the most important quality ![]()
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