• Title/Summary/Keyword: Parallel Shroud Impeller

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A Study on the Development and Application of a Design Program for Centrifugal Turbo Fan (원심 터보홴 설계용 프로그램의 개발 및 응용에 대한 연구)

  • Kim, Jang-Kweon;Oh, Seok-Hyung
    • Journal of Power System Engineering
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    • v.20 no.6
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    • pp.71-79
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    • 2016
  • This paper introduces the design method of the centrifugal turbo fan and the process of developing the design program of it. The developed design program confirmed the applicability by experimental performance data. Here, we proposed new velocity coefficients and considered various losses such as impeller inlet loss, vane passage flow loss, casing pressure loss, recirculation loss power, and disk friction loss power. Especially, the inlet and outlet widths of the impeller were newly determined by reflecting the experimental results. As a result, this fan design program shows a good performance result regardless of the types of impeller and is expected to be a very useful design tool.

Flow characteristics of axial fan with shroud (축류홴과 슈라우드의 유량 및 내부 유동 특성)

  • Lee, Kwang-Hee;Kim, Jae-Won
    • The KSFM Journal of Fluid Machinery
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    • v.11 no.5
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    • pp.30-36
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    • 2008
  • Axial fan without static blades requires the duct as a guidance for unskewed inflows. This work examined the geometric effects of a duct guided the in and out flows through an impeller. The present methodologies are computational predictions with parallel work by experimental validation. Several different positions of a rotor in a duct are proposed for plausible models of a rotor inside a duct. The optimum axial position of an impeller in a duct is found at the #4 model where the impeller lies on the inlet edge of a circular duct. The model shows a wider inlet area. The result of computational prediction is in good agreement with experiment measurement.