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Viscosities, thermal conductivities and diffusion coefficients of CO2 mixtures:Review of experimental data and theoretical models
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling. (Energy Technology)ORCID-id: 0000-0002-6279-4446
SINTEF Energy Research.
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling.
Vise andre og tillknytning
2011 (engelsk)Inngår i: International Journal of Greenhouse Gas Control, ISSN 1750-5836, E-ISSN 1878-0148, Vol. 5, nr 5, s. 1119-1139Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Accurate experimental data on the thermo-physical properties of CO2-mixtures are pre-requisites fordevelopment of more accurate models and hence, more precise design of CO2 capture and storage (CCS)processes. A literature survey was conducted on both the available experimental data and the theoreticalmodels associated with the transport properties of CO2-mixtures within the operation windows ofCCS. Gaps were identified between the available knowledge and requirements of the system design andoperation. For the experimental gas-phase measurements, there are no available data about any transportproperties of CO2/H2S, CO2/COS and CO2/NH3; and except for CO2/H2O(/NaCl) and CO2/amine/H2Omixtures, there are no available measurements regarding the transport properties of any liquid-phasemixtures. In the prediction of gas-phase viscosities using Chapman–Enskog theory, deviations are typically<2% at atmospheric pressure and moderate temperatures. The deviations increase with increasingtemperatures and pressures. Using both the Rigorous Kinetic Theory (RKT) and empirical models in theprediction of gas-phase thermal conductivities, typical deviations are 2.2–9%. Comparison of popularempirical models for estimation of gas-phase diffusion coefficients with newer experimental data forCO2/H2O shows deviations of up to 20%. For many mixtures relevant for CCS, the diffusion coefficientmodels based on the RKT show predictions within the experimental uncertainty. Typical reported deviationsof the CO2/H2O system using empirical models are below 3% for the viscosity and the thermalconductivity and between 5 and 20% for the diffusion coefficients. The research community knows littleabout the effect of other impurities in liquid CO2 than water, and this is an important area to focus infuture work.

sted, utgiver, år, opplag, sider
2011. Vol. 5, nr 5, s. 1119-1139
Emneord [en]
CO2-mixtures, Transport properties, viscosity, thermal conductivity, diffusion coefficient, CO2 capture and storage
HSV kategori
Forskningsprogram
energi- och miljöteknik
Identifikatorer
URN: urn:nbn:se:mdh:diva-13348DOI: 10.1016/j.ijggc.2011.07.009ISI: 000295300700001Scopus ID: 2-s2.0-80052538661OAI: oai:DiVA.org:mdh-13348DiVA, id: diva2:459568
Merknad

NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Greenhouse Gas Control. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Greenhouse Gas Control, [VOL 5, ISSUE 5, 2011]

Tilgjengelig fra: 2011-11-28 Laget: 2011-11-26 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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