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Effect of Clearance Gap in Spiral Casing Design of a Centrifugal Fan with Optimized Impellers

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  • Ardit Gjeta

    (Energy Department, Faculty of Mechanical Engineering, Polytechnic University of Tirana, Tirana, Albania)

Abstract

Industrial fans are subject to European Union energy labeling and Ecodesign requirements. By using more efficient industrial fans, Europe will save 34 TWh and avoid 16 million tones of CO2 emissions annually by 2020 [1]. In this paper, the effect of the clearance gap between the impeller and the volute, on the performance of a centrifugal fan was investigated using open source CFD software OpenFOAM [2]. An automized loop with RANS and data post-processing is set up using Matlab, for allowing a large number of parameter variations. We conducted numerical analysis for all operating points, where starting points are optimal impellers for the whole range of specific speeds [3], [4]. The effect of volute angle and geometrical parameters related to the tongue [5], on total pressure loss, static pressure recovery coefficient and on efficiency are presented.

Suggested Citation

  • Ardit Gjeta, 2019. "Effect of Clearance Gap in Spiral Casing Design of a Centrifugal Fan with Optimized Impellers," European Journal of Engineering and Technology Research, European Open Science, vol. 4(9), pages 181-185, September.
    • Handle: RePEc:epw:ejeng0:v:4:y:2019:i:9:id:61533
    DOI: 10.24018/ejeng.2019.4.9.1533
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