LOW-PRESSURE REVERSIBLE AXIAL FAN DESIGNED WITH DIFFERENT SPECIFIC WORK OF ELEMENTARY STAGES

Abstract

Low-pressure axial fan impellers designed according to the principle of equal pecific work of all elementary stages have blades whose profile near the fan hub s under a significantly larger inclination angle than at the impeller periphery. In rder to minimize the spatial curvature of the fan blades and the fan hub length, mpeller blades of low-pressure axial fans can be designed with different specific ork of elementary stages, so that the specific work of elementary stages is maller at the hub than at the periphery. This paper presents the operating haracteristics of a low-pressure reversible axial fan with straight blade profiles, esigned with different specific work of elementary stages. The fan was tested on standard test rig, with air intake loading on the suction side of the fan.

Keywords

Dates

  • Submission Date2012-05-03
  • Revision Date2012-07-04
  • Acceptance Date2012-07-12

DOI Reference

10.2298/TSCI120503195B

References

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  2. Spasi. .., Numerical and Experimental Investigation of the Influence of the Blade Profile Shape on the Reversible Axial Fan Characteristics (in Serbian), Ph. D. thesis, Faculty of Mechanical Engineering Nis, University of Nis, Nis, 2012
  3. Bogdanovi. B., et al., The Development Construction of Reversible Axial Fans (in Serbian), Report for project No. 18012, funded by the Ministry of Science and Technological Development, the period: 31.04.2008.31.04.2011.
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Volume 16, Issue 12, Pages605 -615