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TECHNICAL PAPERS

On Cross-Flow Fan Theoretical Performance and Efficiency Curves: An Energy Loss Analysis on Experimental Data

[+] Author and Article Information
Andrea Toffolo

Department of Mechanical Engineering, University of Padova, Via Venezia, 1-35131 Padova, Italye-mail: andrea.toffolo@unipd.it

J. Fluids Eng 126(5), 743-751 (Dec 07, 2004) (9 pages) doi:10.1115/1.1792268 History: Received January 07, 2004; Revised May 12, 2004; Online December 07, 2004
Copyright © 2004 by ASME
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References

Figures

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A cross-flow fan configuration
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Theoretical and actual characteristic curve according to Eck’s theory 7
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The most significant parameters affecting fan performance and efficiency
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The casing shapes selected for the analysis
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Definition of the normalized stream function f
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Example of the local total pressure coefficient along the external circumference of the impeller
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Example of the ratio between the tangential velocity and the peripheral speed along the external circumference of the impeller
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The total pressure coefficient and the ratio cu2/u2 along the impeller external circumference at different flow coefficients for a sample configuration
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Total efficiency and estimation of the volumetric and hydraulic efficiencies for the considered configurations at different flow coefficients
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Actual and theoretical performance curves of the considered configurations at different flow coefficients

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