Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on Performance and Flow Characteristics of Automotive Sirocco Fan

자동차용 시로코팬의 성능 및 유동특성에 관한 실험적 연구

  • Published : 2002.11.01
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Abstract

For the optimal design of an automotive blower system, effects of the scroll cut-off starting angle, the clearance between blade tip and bellmouth, and the scroll expansion angle on the performance of sirocco fan are investigated experimentally. Best performance is achieved at fan exposure ratio $\Deltae/r_c$,/TEX> =1.0, and clearance ratio $\DeltaeC/C=0.62. Flow characteristics inside sirocco fan are also studied by using LDV. Flow patterns in the inside of fan can be classified into three regions. Velocity vector has the same direction as rotational direction of fan at 0~$120^{\circ}$, toward the fan blades at 150～$180^{\circ}$, and opposite direction at 210~$330^{\circ}$. Turbulent intensity is relatively high near the cut-off edge in the scroll housing.

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References

  1. Rai, D. and Swim, W. B., 1981, Measurements of the Mean Flow Velocity and Velocity Fluctuations at the Exit of an FC Centrifugal Fan Rotor, Transaction of the ASME, Vol. 103, pp. 393-399 https://doi.org/10.1115/1.3244472
  2. Morinushi, K., 1987, The Infilence of Geometric Parameters on F. C. Centrifugal Fan Noise, Transaction of the ASME, Vol. 109, pp. 227-234
  3. Kind, R. J. and Tobin, M. G., 1990, Flow in a Centrifugal Fan of the Squirrel-Cage Type, Transaction of the ASME, Vol. 112, pp. 84-90
  4. Maeng, J. S., Yoon, J. Y., Ahn, T. B., Yoon, J. E. and Hahn, D. J., 1999, An Experimental Study for Flow Characteristics Inside the Rotor of a Multiblade Fan/Scroll System, KSME, Vol. B/23, No. 5, pp. 646-652
  5. Qi, D. T., Pomfret, M. J. and Lam, L., 1996, A new approach to the design of fan volute profiles, IMechE, Vol. 210, pp. 287-294 https://doi.org/10.1243/PIME_PROC_1996_210_198_02
  6. Kim, Y. C. and Lee, S. H., 1997, Experimental Study for Reduction of Blade passing Frequency Noise Level of Multi-Blade Fan, Proceedings of the SAREK, pp. 574-579
  7. Yamazaki, S. and Satoh, R., 1986, An Experimental Study on the Aerodynamic Performance of Multi-Blade Blowers (1st Report, Measurement of Flow Patterns within the Blowers), JSME, Vol. B/52, No. 484, pp. 3987-3991.
  8. Kadota, S., Kawaguchi, K, Suzuki, M., Matsui, K. and Kikuyama, K., 1994, Experimental Study on Low-Noise Multiblade Fan (1st Report, Visualization of Three-Dimensional Flow between Blades), JSME, Vol. B/60, No. 570, pp. 102-107
  9. Kawaguchi, K., Kadota, S., Suzuki, M., Matsui, K. and Kikuyama, K., 1994, Experimental Study on Low-Noise Multiblade Fan (2st Report, Relation of Flow between Fan Blades and Pressure Fluctuations), JSME, Vol. B/60, No. 570, pp. 108-111.
  10. Asad, M. S., William, K. G. Jr. and James, R. S., 2001, Flow Visualization Study of an HVAC Module Operated in Water, VTMS 2001-01-1702
  11. Monier, B. B., Bashar, S. A., Todd, E. S. and Ming-Chia, Lai, 1996, Optimum Design Parameters of an Automotive Blower Fan Housing Scroll, SAE 960965
  12. Saeki, N., Kamiyama, K., Uomoto, M. and Ishihara, Y., 1997, Development of Low Noise Blower Fan, SAE 971842