Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Methanol Conversion Efficiency and Mass Transfer of Steam-Methanol Reforming on Flow Rate Variation in Curved Channel

곡유로 채널을 가지는 수증기-메탄올 개질기에서 유량 변화에 따른 메탄올 전환율 및 물질 전달에 관한 연구

  • Jang, Hyun (Graduate school of Mechanical Engineering, Gyeongsang Nat'l Univ) ;
  • Park, In Sung (Graduate school of Mechanical Engineering, Gyeongsang Nat'l Univ) ;
  • Suh, Jeong Se (School of Mechanical Engineering, Gyeongsang Nat'l Univ. & ERI)
  • 장현 (경상대학교 기계공학부) ;
  • 박인성 (경상대학교 기계공학부) ;
  • 서정세 (경상대학교 기계공학부&공학연구원)
  • Received : 2014.10.31
  • Accepted : 2014.12.30
  • Published : 2015.03.01
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Abstract

In this study, numerical analysis of curved channel steam-methanol reformer was conducted using the computational fluid dynamics (CFD) commercial code STAR-CCM. A pre-numerical analysis of reference model with a cylindrical channel reactor was performed to validate the combustion model of the CFD commercial code. The result of advance validation was in agreement with reference model over 95%. After completing the validation, a curved channel reactor was designed to determine the effects of shape and length of flow path on methanol conversion efficiency and generation of hydrogen. Numerical analysis of the curved-channel reformer was conducted under various flow rate ($10/15/20{\mu}l/min$). As a result, the characteristics of flow and mass transfer were confirmed in the cylindrical channel and curved channel reactor, and useful information about methanol conversion efficiency and hydrogen generation was obtained for various flow rate.

본 연구에서는 전산유체역학 상용 코드를 이용하여 곡유로 채널형 수소 개질기에 대한 수치 해석적 연구를 수행하였다. 상용코드에서 제공하는 연소모델의 사전 검증을 위하여 원통 채널형 개질기 형를 가지는 선행연구모델(23)에 대한 수치해석을 선행하여 수행하였고, 95% 이상 일치하는 결과를 얻을 수 있었다. 선행연구모델의 수치해석을 통해 연소모델에 대한 해석 타당성검증이 완료된 후, 반응기 형태 변화가 메탄올 전환율과 수소생성에 미치는 영향을 파악하여 기존보다 유로의 길이가 증가한 곡유로 채널형 개질기를 설계하고, 유량조건($10/15/20{\mu}l/min$)을 변수로 수치해석을 수행하였다. 그 결과 원통 채널형 개질기와 곡유로 채널형 개질기에서 발생하는 유동 특성 및 물질전달 특성을 파악할 수 있었고, 그리고 유량에 따른 메탄올 전환율 및 수소 생성에 관한 유용한 정보를 얻을 수 있었다.

Keywords

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