A simulated H2O/CO2 condenser design for oxy-fuel CO2 capture process

Takami, Kourosh Mousavi; Mahmoudi, Jafar; Time, Rune W.

doi:10.1016/j.egypro.2009.01.189

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Lu et al [28] investigated steam condensation on a horizontal tube in the presence of CO 2 with an experiment and obtained condensation heat transfer coefficients for the sub-atmospheric pressure ranging from 5 kPa to 101 kPa. Takami et al [29] used Comsol software to simulate the condensation heat transfer and separation of a steam-CO 2 and O 2 mixture in the condenser. This provides some data that serve as the basis for the design of a volumetric heat exchanger (condenser) that is suitable for steam-CO 2 separation in flue gas, thus improving the efficiency of power plants.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Steam–CO2 Mixture Condensation over a Flat Plate Based on the Solubility of CO2

Jiang

et al. 2023

Applied Sciences

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In order to successfully study the condensation and separation of a steam–CO2 mixture, a boundary layer model was applied to the mixture condensation of steam and CO2 on horizontal and vertical plates. The modified condensation boundary layer model of steam and CO2, given the CO2 solubility in the condensate, was established, numerically solved, and verified with existing experimental data. Different condensation data of steam–air and steam–CO2 mixtures were compared, and the effect of CO2 solubility on the mixed gas condensation was analyzed under multiple pressure conditions (1 atm–10 MPa). The simulation data show that the presence of CO2 will deteriorate the condensation heat transfer, just like air. Given that CO2 is slightly soluble, some CO2 can pass through the gas–liquid interface to enter the condensate film and reduce the accumulated CO2 on the gas–liquid interface, which improves the condensation. However, the solubility of CO2 is only significant under high-pressure conditions, inducing its effects on condensation. A comparison of the condensation coefficients of the steam–CO2 mixture shows the lower impact of CO2 condensation on the horizontal plate compared to that on the vertical plate. For most conditions, the steam–CO2 mixture gas condensation heat transfer coefficient on the vertical plate surface is still larger than that on the horizontal plate surface, and the improvement in the condensation heat transfer coefficient caused by low CO2 solubility (2 or 10%) at 10 MPa on the vertical plate is also larger than that of the horizontal plate.

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Section: Introductionmentioning

confidence: 99%