Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Performance Analysis of a Centrifugal Fan with Splitters

수치해석에 의한 스플리터 부착 원심송풍기 성능특성 연구

  • 장춘만 (한국건설기술연구원 설비플랜트연구실) ;
  • 최가람 (한국건설기술연구원 설비플랜트연구실) ;
  • 양상호 (삼원이앤비(주))
  • Received : 2011.04.12
  • Accepted : 2011.07.28
  • Published : 2011.10.01
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Abstract

This paper describes the performance of a centrifugal fan used for refuse collection systems according to the chord length of the splitters installed near the blade suction and pressure surface sides. The fan performance is analyzed by three-dimensional Navier.Stokes analysis and is compared to the results obtained experimentally. Throughout the numerical simulation of the fan with splitters, it is found that the reverse-flow region observed near the suction side of the blade can be reduced by installing a splitter. The fan performance is successfully improved by controlling the chord length of the splitter installed near the blade suction side. Under the designed flow condition, the efficiency and pressure of a fan with splitters increase by up to 4% and 18%, respectively, compared to the reference fan.

본 연구에서는 생활폐기물 관로이송 설비에 사용되고 있는 원심송풍기의 성능향상을 위해 임펠러날개 압력면과 부압면 측에 스플리터를 각각 설치하고, 스플리터의 코드길이 변화에 따른 성능특성을 삼차원 나비어-스톡스 방정식을 이용한 수치해석으로 분석하였다. 수치해석을 통한 기초연구를 바탕으로 날개 부압면측에서 발생하는 역류현상을 억제할 수 있는 스플리터의 익간설치를 고려하였으며, 주요설계 변수로는 코드길이를 설정하였다. 이를 통해 날개 부압면 측에 설치한 스플리터의 코드길이가 길어질수록 원심송풍기 압력 및 효율특성이 설계유량 조건 뿐만 아니라 유량증가에 따라 향상됨을 알수 있었다. 설계유량 조건에서 스플리터 부착 원심송풍기에 의해 효율 및 압력은 기존대비 각각 4% 및 18% 향상되었다.

Keywords

References

  1. Jang, C.-M., Kim D.-W. and Lee, S.-Y., 2008, "Performance Characteristics of Turbo Blower in a Refuse Collecting System According to Operation Conditions," Journal of Mechanical Science and Technology, Vol. 22, pp. 1896-1901. https://doi.org/10.1007/s12206-008-0729-6
  2. Bayomi, N. N., Abdel Hafiz, A. and Osman, A. M, 2006, "Effect of Inlet Straighteners on Centrifugal Fan Performance," Energy Conversion & Management, Vol. 47, pp. 3307-3318. https://doi.org/10.1016/j.enconman.2006.01.003
  3. Jang, C.-M., Lim, S.-J. and Yang, S.-H., 2011, "Performance Analysis for Turbo Blower According to Inlet-Vane Angle," Journal of the KSME B, Vol.35, No. 3, pp. 301-307. https://doi.org/10.3795/KSME-B.2011.35.3.301
  4. Kim, K.-Y. and Seo, S.-J., 2006, "Application of Numerical Optimization Technique to Design of Forward-Curved Blades Centrifugal Fan," JSME International Journal-Series B, Vol. 49, No. 1, pp. 152-158. https://doi.org/10.1299/jsmeb.49.152
  5. Cui, B.-L., Zhu, Z.-C., Jin, Y.-Z. and Li, Y., 2010, "Numerical Simulation of Flow in Centrifugal Pump with Complex Impeller," Proceedings of the Third Asian Joint Workshop on Thermophysics and Fluid Science, pp. 57-62.
  6. Kang, S. H. and Shin, Y. S., 1989, "Numerical Calculation of Flows Through Impeller of Centrifugal Compressors by Streamline Curvature Method," Journal of Air Conditioning and Refrigeration Engineering, Vol.1, No. 1, pp. 87-96.
  7. Kim, J.-H. and Kim, K.-Y., 2010, "Numerical Study on Effects of Geometrical Variables on Performance of a Centrifugal Compressor," Proceedings of the Fifth National Congress on Fluids Engineering, pp. 152-155.
  8. CFX-12 User Manual, 2008, Ansys inc.
  9. Mente, F. and Esch, T., 2001, "Elements of Industrial Heat Transfer Predictions," Proceedings of 16th Bazilian Congress of Mechanical Engineering (CPBEM), CD-ROM.

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