• 제목/요약/키워드: 리브붙이

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보일러용 裸管 및 리브붙이管 의 熱傳達 特性 에 관한 硏究 (A Study on Heat Trasfer Characteristics of Smooth and Ribbed Tubes for Boiler)

  • 김종보;한승탁
    • 대한기계학회논문집
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    • 제9권6호
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    • pp.699-705
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    • 1985
  • 본 논문에서는 자연 및 강제순환 모두를 실험 했으며 사용한 리브붙이 관은 관의 두께와 직경, 리브수, 리브 피치(Pitch), 높이 및 폭등을 사용 하려는 열교환기 나 보일러에 합당하도록 설계, 선정하면, 그 적용 범위는 매우 넓다고 생각돼 연구 검 토 하고자 한다.

열전달 촉진관내의 화울링 해석-2차원 리브붙이관에 Kern-Seaton 화울링 모델 적용 (Fouling in Enhanced Tubes-Extension of Kern-Seaton Fouling Model to Repeated Ribbed Tubes)

  • 김내현
    • 설비공학논문집
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    • 제4권4호
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    • pp.289-298
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    • 1992
  • Fouling is "a major unsolved" area in heat transfer research. Currently, fouling researches are performed in every directions-fundamental aspects, modeling and cumulating experimental data. In this study, an attempt was made to extend the knowledge in enhanced tube fouling. The Kern-Seaton fouling model which was originally proposed for smooth tube fouling was extended to repeated rib tubes. Key parameters-mass transfer coefficient and wall shear stress-were modeled for repeated rib tubes. Some critical points related with the enhanced tube fouling-uncertainties in the mass transfer rate, wall shear stress modeling, deformation of roughness shape during fouling-were discussed, and some quantitative evaluations were made.

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