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Volume 44 Issue 1
Feb.  2023
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Zhao Xuebin, Huang Yanping, Liu Shenghui, Zang Jinguang. Calculation Method of Pseudo-critical Line Based on Different State Equations and Division of Pseudo-critical Zone[J]. Nuclear Power Engineering, 2023, 44(1): 17-23. doi: 10.13832/j.jnpe.2023.01.0017
Citation: Zhao Xuebin, Huang Yanping, Liu Shenghui, Zang Jinguang. Calculation Method of Pseudo-critical Line Based on Different State Equations and Division of Pseudo-critical Zone[J]. Nuclear Power Engineering, 2023, 44(1): 17-23. doi: 10.13832/j.jnpe.2023.01.0017

Calculation Method of Pseudo-critical Line Based on Different State Equations and Division of Pseudo-critical Zone

doi: 10.13832/j.jnpe.2023.01.0017
  • Received Date: 2022-03-16
  • Rev Recd Date: 2022-04-18
  • Publish Date: 2023-02-15
  • Supercritical fluids undergo drastic changes in thermophysical properties within the pseudo-critical zone. In order to establish the division mode of Pseudo-critical zone, this paper takes supercritical carbon dioxide as the research object. First, the corresponding Pseudo-critical lines are obtained based on three state equations with different accuracy. Then, based on the theory of continuous phase transition, the Pseudo-critical zone is determined by Ehrenfest equation. Finally, according to the division results of the Pseudo-critical zone, matching with the zone where the heat transfer degradation occurs, the internal mechanism affecting the heat transfer degradation behavior in different regions is analyzed.

     

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