Journal of Mechanical Science and Technology

, Volume 31, Issue 4, pp 1753–1761 | Cite as

Secondary flow stabilization of 100 kW-class micro gas turbine

  • Hyung-Soo Lim
  • Je-Sung Bang
  • Bum-Seog Choi
  • Moo-Ryong Park
  • Jun-Young Park
  • Jeongmin Seo
  • Soon-Chan Hwang
  • Jeong Lak Sohn
  • Byung Ok Kim
Article
  • 83 Downloads

Abstract

Experimental and numerical research was conducted to stabilize the secondary flow of a micro gas turbine. The trust balance between the compressor impeller and the turbine rotor should be conserved during the entire operation to satisfy the operation conditions. However, micro gas turbines cannot achieve their design condition if improper events, such as rotor dynamic unbalance, thermal deformation, rubbing, occur. The present research introduces experimental and numerical procedures to stabilize the secondary flow in micro gas turbines. A micro gas turbine and the performance test facility was developed at KIMM (Korea Institute of Machinery and Materials) to improve the core technology that is used in micro gas turbines in the distributed generation industry. For convenience, the micro gas turbine facility was divided into two components: the major components of the micro gas turbine and the assist components. After assembling the micro gas turbine, the motoring test, the self-sustaining test and the part load test were conducted to verify the performance. For stable operation, the secondary flow distribution in a micro gas turbine must be formed properly. However, the secondary flow distribution performs improperly during combustion. At the beginning of the experimental test, a combined thermo-mechanical analysis was conducted to determine the reason for the unstable secondary flow distribution of the developed micro gas turbine. To make a fit-forpurpose secondary flow distribution, a heat shield support was specifically designed and installed so significant improvement could be realized.

Keywords

Combined thermo-mechanical analysis Micro gas turbine Secondary flow Stabilization Test facility 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    J.-Park, S.-K. Rhim and K. Hur, Study on the performance characterisitic of 60kW micro gas turbine-absorption chiller/heater system, KSFM J. of Fluid Machinery, 18 (5) 976-980.Google Scholar
  2. [2]
    J. Park, K. Hur and S Rhim, Test operation result of 30kW micro gas turbine, Proceedings of Korea Fluid Machinery Association, Dec. 4~5, Jeju, Korea (2008) 563–564.Google Scholar
  3. [3]
    N. Nakazawa, H. Ogita, Takahashi and Y. Kawaguchi, Development in the full assembly test rig of the 100kW automotive ceramic gas turbine, Proceedings of ASME Turbo Expo 1997, Orlando, Florida, 97-GT-210 (1997).Google Scholar
  4. [4]
    R. Brandon P. B. Halliday and J. S. Hoffman, Inlet air supercharging of a 70kW microturbine, Proceedings of ASME Turbo Expo 2006, Barcelona, Spain, GT2006-90555 (2006).Google Scholar
  5. [5]
    K. Hur, J. Park and S. Rhim, Performance test of MGT combined heat & power system, Proceedings of the Fourth National Congress on Fluids Engineering, August 23-25, Kyungju, Korea (2006) 313–316.Google Scholar
  6. [6]
    H. Jin, S. Kho, J. Ki, S. Yong, M. Kang and E. Lee, Development of the performance test cell using the small gas turbine engine of 80 lbf-thrust, KSPE Fall Conference (2010) 495–498.Google Scholar
  7. [7]
    R. Calabria, F. Chiariello, P. Massoli and F. Reale, Part load behavior of a micro gas turbine fed with different fuels, Proceedings of ASME Turbo Expo 2014, Dusseldorf, Germany, GT2014-26631 (2014).Google Scholar
  8. [8]
    Y. Zeng and J. Liu, Investigations on three-dimensional coupled flow of secondary air system and main flow passages in a micro gas turbine, Proceedings of ASME Turbo Expo 2014, Dusseldorf, Germany, GT2014-26582 (2014).Google Scholar
  9. [9]
    A. Alexiou and K. Mathioudakis, Secondary air system component modelling for engine performance simulations, Proceedings of ASME Turbo Expo 2008, Berlin, Germany, GT2008-50771 (2008).Google Scholar
  10. [10]
    Technology Characterization: Microturbines, December (2008).Google Scholar
  11. [11]
    S. Rhim, Micro gas turbine research trend and prospect, J. of Electricity, 2001. 3 (2001) 43–45.Google Scholar
  12. [12]
    S. Shao, Q. Deng and Z. Feng, Aerodynamic optimization of the radial inflow turbine for a 100kW-class micro gas turbine based on metamodel-semi-assisted method, Proceedings of ASME Turbo Expo 2013, San Antonio, Texas, USA, GT2013-95245 (2013).Google Scholar
  13. [13]
    G. A. Gerolymos and I. Vallet, Tip-clearance and secondary flows in a transonic compressor rotor, Proceedings of ASME Turbo Expo 1998, Stockholm, Sweden, 98-GT-366 (1998).Google Scholar
  14. [14]
    S. Y. Kim, J. Y. Park and V. L. Goldenberg, Investigation of transient performance of an auxiliary power unit micro turbine engine, Proceedings of ASME Turbo Expo 2006, Barcelona, Spain, GT2006-90594 (2006).Google Scholar
  15. [15]
    J. Seo, B. S. Choi and H.-S. Lim, A study on axial thrust force of micro gas turbine, KSME Spring Conference (2014) 492–493.Google Scholar
  16. [16]
    H.-S. Lim, B.-S. Choi, M.-R. Park, S.-C. Hwang, J.-Y. Park, J. Seo, J.-S. Bang, B. O. Kim, A. S. Lee, J. H. Cho and H. S. Kim, Development of micro gas turbine test facility, Asian Congress on Gas Turbines, ACGT2014-0131 (2014).Google Scholar
  17. [17]
    H.-S. Lim, B.-S. Choi, J. L. Sohn, M.-R. Park, J.-Y. Park, J. Seo, J.-S. Bang, S.-C. Hwang, Y.-C. Lim, I.-K. Oh and B. O. Kim, Experimental study about micro gas turbine performance, 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii (2016).Google Scholar
  18. [18]
    F. T. Meissonnier and C. M. Stoisser, Compressor rubbing risk analysis for combustion turbine using thermomechanical and dynamical FE modeling, Proc. of ASME Turbo Expo 2006, GT2006-90835 (2006).Google Scholar
  19. [19]
    Y. Okita and S. Yamawaki, Conjugate heat transfer analysis of turbine rotor-stator system, Proc. of ASME Turbo Expo 2002, GT2002-30615 (2002).Google Scholar
  20. [20]
    V. Ganine, U. Javiya, N. Hills and J. Chew, Coupled fluidstructure transient thermal analysis of a gas turbine internal air system with multiple cavities, Proc. of ASME Turbo Expo 2012, GT2012–68989 (2012).Google Scholar
  21. [21]
    D. Amirante and N. J. Hills, Thermo-mechanical finite element analysis/computational fluid dynamics coupling of an interstage seal cavity using torsional spring analogy, J. of Turbomachinery, 134 (2012) 051015–1~051015-9.CrossRefGoogle Scholar
  22. [22]
    Z. Sun, J. W. Chew and N. J. Hills, Use of CFD for thermal coupling in aeroengine internal air systems applications, 4th Int. Symp. on Fluid Machinery and Fluid Engineering, 4ISFMFE-IL07 (2008).Google Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Hyung-Soo Lim
    • 1
  • Je-Sung Bang
    • 1
  • Bum-Seog Choi
    • 1
  • Moo-Ryong Park
    • 1
  • Jun-Young Park
    • 1
  • Jeongmin Seo
    • 1
  • Soon-Chan Hwang
    • 1
  • Jeong Lak Sohn
    • 1
  • Byung Ok Kim
    • 2
  1. 1.Department of Extreme Mechanical EngineeringKorea Institute of Machinery & MaterialsDaejeonKorea
  2. 2.Department of Environmental and Energy SystemsKorea Institute of Machinery & MaterialsDaejeonKorea

Personalised recommendations