Guidelines for reporting of phase equilibrium measurements (IUPAC Recommendations 2012)

Chirico, Robert D.; Loos, Theodoor W. De; Gmehling, Jürgen; Goodwin, Anthony R. H.; Gupta, Sumnesh; Haynes, W.M.; Marsh, Kenneth N.; Rives, V.; Olson, James D.; Spencer, Calvin F.; Brennecke, Joan F.; Trusler, J. P. M.

doi:10.1351/pac-rec-11-05-02

Cited by 29 publications

(32 citation statements)

References 38 publications

(35 reference statements)

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“…Special care has been taken to present the results and analysis in accordance with the IUPAC Guidelines for reporting of phase equilibrium measurements given in the work by Chirico et al [10]. In particular, a thorough estimation of the standard uncertainties, as specified in the ISO Guide for the Estimation of Uncertainty in Measurement, commonly referred to as "GUM" [11], has been performed.…”

Section: Introductionmentioning

confidence: 99%

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

Westman

Stang

Løvseth

et al. 2016

Fluid Phase Equilibria

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Accurate thermophysical data for the CO 2 -rich mixtures relevant for carbon capture, transport and storage (CCS) are essential for the development of the accurate equations of state (EOS) and models needed for the design and operation of the processes within CCS. Vapor-liquid equilibrium measurements for the binary system CO 2 +O 2 are reported at 218, 233, 253, 273, 288 and 298 K, with estimated standard uncertainties of maximum 8 mK in temperature, maximum 3 kPa in pressure, and maximum 0.0031 in the mole fractions of the phases in the mixture critical regions, and 0.0005 in the mole fractions outside the critical regions. These measurements are compared with existing data. Although some data exists, there are little trustworthy literature data around critical conditions, and the measurements in the present work indicate a need to revise the parameters of existing models. The data in the present work has significantly less scatter than most of the literature data, and range from the vapor pressure of pure CO 2 to close to the mixture critical point pressure at all six temperatures. With the measurements in the present work, the data situation for the CO 2 +O 2 system is significantly improved, forming the basis to develop better equations of state for the system. A scaling law model is fitted to the critical region data of each isotherm, and high accuracy estimates for the critical composition and pressure are found. The Peng-Robinson EOS with the alpha correction by Mathias and Copeman, the mixing rules by Wong and Sandler, and the NRTL excess Gibbs energy model is fitted to the data in the present work, with a maximum absolute average deviation of 0.01 in mole fraction.

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Section: Introductionmentioning

confidence: 99%

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

Westman

Stang

Løvseth

et al. 2016

Fluid Phase Equilibria

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show abstract

“…The update rates of the four pressure sensors p i were 400 Hz, and the dead time of the differential pressure sensor p 11 was approximately 45 ms. The measured pressure values of p i were obtained by the logging program using the digital output of the sensors through a RS485 serial connection.…”

Section: Description Of Setupmentioning

confidence: 99%

“…The measured pressure values of p i were obtained by the logging program using the digital output of the sensors through a RS485 serial connection. The values of p 11 were obtained using a conversion of the analog 4-20 mA DC current output of the sensor to a digital output read through a RS485 serial connection by the logging program.…”

Section: Description Of Setupmentioning

confidence: 99%

“…11 The differential pressure was measured using a Rosemount 3051S1CD differential pressure transmitter, in combination with a Rosemount 1199 remote mount seal/diaphragm. The transmitter can measure pressure differences over the diaphragm in the range ±0.0623 MPa.…”

Section: Hydrostatic Pressure P Hsmentioning

confidence: 99%

“…Special care has been taken by the authors to present the results and analysis in accordance with the IUPAC Guidelines for reporting of phase equilibrium measurements given in the work by Chirico et al [11]. One of the most important aspects of this is the thorough estimation of the standard uncertainties, as specified in the ISO Guide for the Estimation of Uncertainty in Measurement, commonly referred to as "GUM" [12].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Vapor–liquid equilibrium data for the carbon dioxide and nitrogen (CO2 + N2) system at the temperatures 223, 270, 298 and 303 K and pressures up to 18 MPa

Westman

Stang

Løvseth

et al. 2016

Fluid Phase Equilibria

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A new setup for the measurement of vapor-liquid phase equilibria of CO 2 -rich mixtures relevant for carbon capture and storage (CCS) transport conditions is presented. An isothermal analytical method with a variable volume cell is used. The apparatus is capable of highly accurate measurements in terms of pressure, temperature and composition, also in the critical region. Vapor-liquid equilibrium (VLE) measurements for the binary system CO 2 +N 2 are reported at 223, 270, 298 and 303 K, with estimated standard uncertainties of maximum 0.006 K in the temperature, maximum 0.003 MPa in the pressure, and maximum 0.0004 in the mole fractions of the phases. These measurements are verified against existing data. Although some data exists, there is little trustworthy data around critical conditions, and our data indicate a need to revise the parameters of existing models. A fit made against our data of the vapor-liquid equilibrium prediction of GERG-2008/EOS-CG for CO 2 +N 2 is presented. At 223 and 298 K, the critical region of the isotherm are fitted using a scaling law, and high accuracy estimates for the critical composition and pressure are found.

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Uncertainty quantification of property models: Methodology and its application to CO₂‐loaded aqueous MEA solutions

et al. 2015

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in Wiley Online Library (wileyonlinelibrary.com) Uncertainties in property models can significantly affect the results obtained from process simulations. If these uncertainties are not quantified, optimal plant designs based on such models can be misleading. With this incentive, a systematic, generalized uncertainty quantification (UQ) methodology for property models is developed. Starting with prior beliefs about parametric uncertainties, a Bayesian method is used to derive informed posteriors using the experimental data. To reduce the computational expense, surrogate response surface models are developed. For downselecting the parameter space, a sensitivity matrix-based approach is developed. The methodology is then deployed to the property models for an MEA-CO 2 -H 2 O system. The UQ analysis is found to provide interesting information about uncertainties in the parameter space. The sensitivity matrix approach is also found to be a valuable tool for reducing computational expense. Finally, the effect of the estimated parametric uncertainty on CO 2 absorption and monoethanolamine (MEA) regeneration is analyzed.

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Guidelines for reporting of phase equilibrium measurements (IUPAC Recommendations 2012)

Cited by 29 publications

References 38 publications

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

Vapor–liquid equilibrium data for the carbon dioxide and nitrogen (CO2 + N2) system at the temperatures 223, 270, 298 and 303 K and pressures up to 18 MPa

Uncertainty quantification of property models: Methodology and its application to CO₂‐loaded aqueous MEA solutions

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Guidelines for reporting of phase equilibrium measurements (IUPAC Recommendations 2012)

Cited by 29 publications

References 38 publications

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

Vapor-liquid equilibrium data for the carbon dioxide and oxygen (CO2 + O2) system at the temperatures 218, 233, 253, 273, 288 and 298 K and pressures up to 14 MPa

Vapor–liquid equilibrium data for the carbon dioxide and nitrogen (CO2 + N2) system at the temperatures 223, 270, 298 and 303 K and pressures up to 18 MPa

Uncertainty quantification of property models: Methodology and its application to CO2‐loaded aqueous MEA solutions

Contact Info

Product

Resources

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Uncertainty quantification of property models: Methodology and its application to CO₂‐loaded aqueous MEA solutions