Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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The Capacitive Deionization Module Design and Its Analysis by Computational Flow Dynamics

CDI 모듈 설계와 전산유동해석

  • Nam, Ki Jin (Department of Advanced Materials and Chemical Engineering, Hannam University) ;
  • Rhim, Ji Won (Department of Advanced Materials and Chemical Engineering, Hannam University)
  • 남기진 (한남대학교 화공신소재공학과) ;
  • 임지원 (한남대학교 화공신소재공학과)
  • Received : 2019.10.28
  • Accepted : 2019.10.30
  • Published : 2019.10.31
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Abstract

In this study, for the improvement of flow pattern with the CDI module that had the larger electrodes, it was designed with the rectangular type which is gradually wider from the inlet. Based on this, both the flow pattern of feed solution and dead zone were observed and the internal pressure, streaming line and velocity vector distribution were analyzed through the computational flow dynamics and compared with the experimental results. For all flow rates of 10, 20, 30 mL/min, there were no dead zones and the flow patterns were maintained constant. Therefore, it may be possible that the larger electrodes are applied to the CDI process.

본 연구에서는 대면적을 지니는 CDI 모듈의 흐름 향상을 위하여 유체가 들어가는 유입구로부터 면적이 증가하는 직사각형 형태의 유로를 설계하였다. 이를 바탕으로 설계된 모듈 형태에 대해 공급수의 흐름성과 사영역의 유무를 파악하였고 CFD 전산 유체 역학 프로그램을 통해 유로 내의 내부 압력, 유선 그리고 속도 벡터 분포를 분석하였으며 실제 흐름 관측과 CFD 프로그램을 비교 분석하였다. 실험 결과 모든 유속 10, 20, 30 mL/min에서 유로 내 사영역이 거의 발생하지 않았으며 공급수의 흐름성도 일정하게 유지되어 추후 대면적을 가지는 CDI 공정에 적용이 가능할 것이라 판단된다.

Keywords

References

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