An Experimental Study on Selection Pitch Angle on backward flow of an Axial Fan with Adjustable Pitch Angle Blades

피치각 조정형 송풍-역풍 겸용 축류팬에서 배연용 피치각 선정을 위한 실험적 연구

  • Chang, Taek-Soon (Department of Mechanical Engineering, Graduate school of Hanyang University) ;
  • Hur, Jin-Huek (Department of Mechanical Engineering, Graduate school of Hanyang University) ;
  • Moon, Seung-Jae (School of Mechanical Engineering, Hanyang University) ;
  • Lee, Jae-Heon (School of Mechanical Engineering, Hanyang University)
  • 장택순 (한양대학교 대학원 기계공학과) ;
  • 허진혁 (한양대학교 대학원 기계공학과) ;
  • 문승재 (한양대학교 기계공학부) ;
  • 이재헌 (한양대학교 기계공학부)
  • Received : 2008.01.29
  • Accepted : 2009.03.20
  • Published : 2009.03.30

Abstract

In this study, the experimental study has carried out to select pitch angle on the backward flow in an axial fan that has adjustable pitch blades. With the change of pitch angle of axial fan with adjustable blade, air flow rate, pressure and air flow direction can be changed. Because of this merit, adjustable axial fan can be used in the backward flow. For the selection of the backward flow pitch angle, fan performance test method is selected by KS B 6311. Dynamic pressure, static pressure, electric current and voltage are measured in each pitch angles of axial fan that are $36^{\circ}$, $-16^{\circ}$, $-21^{\circ}$, $-26^{\circ}$, $-31^{\circ}$ and $-36^{\circ}$. In the result of test, fan performance curves at several pitch angle has been investigated. Finally, pitch angle of $-26^{\circ}$ has been selected to get largest flow rate at backward flow situation.

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