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Theoretical analysis of supersonic phase change for carbon dioxide in a de Laval nozzle.

Number: pap. n. 1665

Author(s) : RESTREPO J., BOLANOS-ACOSTA A., SIMÕES-MOREIRA J.

Summary

Carbon dioxide is present in many gases mixtures, such as biogas and natural gas, besides air. This poses an important question on how to extract that gas component at affordable cost and technology. One of the more promising techniques for carbon dioxide separation is the supersonic separation, which consists in the expansion of the fluid inside a supersonic nozzle and as the temperature falls due to the expansion, clusters (solid or liquid) of carbon dioxide will form leading to a condensation wave within the supersonic nozzle. Pressure, temperature, and Mach number were calculated using the one-dimensional analysis for real gas. The homogeneous nucleation was calculated using the classical nucleation theory and finally it was estimated the region where the change phase will occur, being located between the Spinodal Line and the homogeneous nucleation (Wilson Line).

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Details

  • Original title: Theoretical analysis of supersonic phase change for carbon dioxide in a de Laval nozzle.
  • Record ID : 30025951
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1665

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