International Journal of Fluid Machinery and Systems

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

Performance Enhancement of 20kW Regenerative Blower Using Design Parameters

  • Jang, Choon-Man (Environmental Engineering Research Division, Korea Institute of Construction Technology) ;
  • Jeon, Hyun-Jun (Environmental Engineering Research Division, Korea Institute of Construction Technology)
  • Received : 2013.10.15
  • Accepted : 2014.04.15
  • Published : 2014.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper describes performance enhancement of a regenerative blower used for a 20 kW fuel cell system. Two design variables, bending angle of an impeller and blade thickness of an impeller tip, which are used to define an impeller shape, are introduced to enhance the blower performance. Internal flow of the regenerative blower has been analyzed with three-dimensional Navier-Stokes equations to obtain the blower performance. General analysis code, CFX, is introduced in the present work. SST turbulence model is employed to estimate the eddy viscosity. Throughout the numerical analysis, it is found that the thickness of impeller tip is effective to increase the blower efficiency in the present blower. Pressure is successfully increased up to 2.8% compared to the reference blower at the design flow condition. And efficiency is also enhanced up to 2.98 % compared to the reference one. It is noted that low velocity region disturbs to make strong recirculation flow inside the blade passages, thus increases local pressure loss. Detailed flow field inside the regenerative blower is also analyzed and compared.

Keywords

References

  1. Jang, C.-M., Lee, J.-S., Tak, B.-Y. and Kim, C.-G., "Characteristics of Design Parameters for an Industrial Regenerative Blower," Proceedings of the Summer Conference of The Society of Air-Conditioning and Refrigerating Engineers of Korea, Yongpyeong Resort, June 2012, pp. 175-178. (in Korean)
  2. Jang, C.-M. and Han, G.-Y., 2010, "Enhancement of Performance by Blade Optimization in Two-Stage Ring Blower," J Thermal Science. Vol. 19, No. 5, pp. 383-389. https://doi.org/10.1007/s11630-010-0398-5
  3. Choi, Y.-S., Lee, K.-Y., Jeong, K.-H., Kim, Y.-K. and Seo, J.-M., 2011, "Design and Performance Evaluation of Side Channel Type Regenerative Blower," KSME Manufacturing and Design Engineering Division Spring Conference. (in Korean)
  4. Myers, R. H., and Montgomery, D. C., 1995, "Response Surface Methodology: Process and Product Optimization Using Designed Experiments," John Wiley & Sons, New York.
  5. Kim, J.-H. and Kim, K.-Y., 2011, "Optimization of Vane Diffuser in a Mixed-Flow Pump for High Efficiency Design," International Journal of Fluid Machinery and System, Vol. 4, No. 1, pp. 172-178. https://doi.org/10.5293/IJFMS.2011.4.1.172
  6. Sevant, N. E., Bloor, M. I. G., and Wilson, M. J., 2000"Aerodynamic Design of a Flying Wing Using Response Surface Methodology," J. Aircraft, Vol. 37, pp. 562-569. https://doi.org/10.2514/2.2665
  7. Jang, C.-M., Lee, J.-S, "Shape optimization of a regenerative blower used for building fuel cell system." Proceedings of 4th Asian Joint Workshop on the Thermophysics and Fluid Science, Busan, Oct 2012. (in Korean)
  8. CFX-13 User Manual, Ansys inc., 2011.
  9. Menter, F. R., 1994, "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Application," AIAA Journal, Vol. 32, No. 8, pp. 1598-1605. https://doi.org/10.2514/3.12149

Cited by

  1. The Performance Analysis Method with New Pressure Loss and Leakage Flow Models of Regenerative Blower vol.8, pp.4, 2015, https://doi.org/10.5293/IJFMS.2015.8.4.221
  2. Optimization of a regenerative blower to enhance aerodynamic and aeroacoustic performance vol.30, pp.3, 2016, https://doi.org/10.1007/s12206-016-0223-5
  3. Parametric study and performance improvement of regenerative flow pump considering the modification in blade and casing geometry vol.27, pp.8, 2017, https://doi.org/10.1108/HFF-03-2016-0088