Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Analysis of Thermal Flow Characteristics according to the Opening Ratio of High-Pressure Valve for Hydrogen Storage Tank

수소 저장 탱크용 고압 밸브의 개도율에 따른 열·유동 특성 분석

  • JUNG, DA WOON (Graduate School of Mechanical Engineering, Kongju National University) ;
  • CHOI, JIN (Korea Automotive Technology Institute(Katech)) ;
  • SUH, HYUN KYU (Division of Mechanical and Automotive Engineering, Kongju National University)
  • 정다운 (공주대학교 기계공학과 대학원) ;
  • 최진 (한국자동차연구원) ;
  • 서현규 (공주대학교 기계자동차공학부)
  • Received : 2022.08.03
  • Accepted : 2022.10.21
  • Published : 2022.10.30
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Abstract

In this study, in order to numerically analyze the heat flow characteristics in the valve according to the opening rate for the solenoid valve for hydrogen supply applied to the hydrogen storage tank, flow characteristics were comparatively analyzed. Through the analysis of pressure and temperature distributions within the valve according to the high-pressure supply condition of 70 MPa or more, the heat flow characteristics in the valve, inlet and outlet passage according to the opening rate of the valve were identified. As a result a sudden change in the fluid behavior appears in the neck region of the valve, and it is understood that the flow separation caused by the flow path shape of the expanded tube has a dominant influence on the flow characteristics. And, it was confirmed that the shape of the valve seat is a factor significantly affecting the improvement of flow rate and differential pressure performance.

Keywords

Acknowledgement

이 논문은 2022년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구이다(2022303004020C, 수소저장시스템의 멀티 및 싱글제어가 가능한 제어기 기술개발).

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