The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Performance Characteristics and Prediction on a Partially Admitted Single-Stage Axial-Type Micro Turbine

부분분사 축류형 마이크로터빈에서의 성능예측 및 성능특성에 관한 연구

  • 조종현 (경상대학교 대학원) ;
  • 최상규 (한국기계연구원 지능형정밀기계연구본부) ;
  • 조수용 (경상대학교 항공기부품기술연구센터(기계항공공학부))
  • Published : 2006.08.01
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Abstract

For axial-type turbines which operate at partial admission, a performance prediction model is developed. In this study, losses generated within the turbine are classified to windage loss, expansion loss and mixing loss. The developed loss model is compared with experimental results. Particularly, if a turbine operates at a very low partial admission rate, a circular-type nozzle is more efficient than a rectangular-type nozzle. For this case, a performance prediction model is developed and an experiment is conducted with the circular-type nozzle. The predicted result is compared with the measured performance, and the developed model quite well agrees with the experimental results. So the developed model could be applied to predict the performance of axial-type turbines which operate at various partial admission rates or with different nozzle shape.

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References

  1. Robert C. Kohl, Howard Z. Herzig and Warren J. Whitney, 1949, 'Effects of Partial Admission on Performance of A Gas Turbine,' NACA Technical Note No. 1807
  2. Bohn, D., Drexler, Chr. and Emunds, R., 1993, 'Experimental and Theoretical Investigations into the Nonuniform Flow of a Partial Admission Turbine with a Multistage Blading,' VGB Kraftwerkstechnik 73, No. 8, pp. 610-608
  3. Boulbin, F., Hetet, J. F. and Chesse, P., 1994, 'Nonsteady Flow in the Partial Admission,' VDI Berichte NR, 1109, pp. 395-401
  4. He, L., 1997, 'Computation of Unsteady Flow Through Steam Turbine Blade Row at Partial Admission,' Proc. Instn. Mech. Engrs., Vol. 211 Part A, pp. 197-205
  5. Bohn, D., Gier, J., and Ziemann, M., 1998, 'Influence of the Cross-Over Channel Geometry on the Flow FCqualization in Partial-Admission Turbines,' VGB PowerTech 2, pp. 49-54
  6. Skopek, J., Vomela, L., Tajc, L. and Polansky, J., 1999, 'Partial Steam Admission in an Axial Turbine Stage,' IMechE 1999 C557/077/99, pp. 681 -691
  7. Doyle, M. D. C., 1962, 'Theories for Predicting Partial-Admission Losses in Turbines,' J. of the Aerospace Sciences, pp. 489 -490
  8. Suter P., And Traupel, W., 1960, ' Un Tersuchungen uber den ventilationsverlust von Turbinenradern,' Mitteilungen aus dem Inst. fur thennische Turbomaschinen, No. 4
  9. Stenning, A. H., 1953, 'Design of Turbines for High energy fuel low power output applications,' MIT Dynamic Analysis and Control Lab., Rep. No. 79
  10. Balje, O. E. and Binsley, R. L., 1968, 'Axial Turbine Performance Evalustion Part A - Loss Geometry Relationships,' J. of Eng. for Power, pp. 341 -348
  11. Vemeau, A., 1987, 'Supersonic Turbines for Organic Fluid Rankine Cycles from 3kW to 1300kW,' VKI Lecture Series 1987-09
  12. Frolov, V. V. and Ignatevskii, E. A., 1972, 'Calculating the Windage Losses in a Turbine Stage,' Teploenergetika, Vol. 19, No. 11, pp. 3 3-37
  13. Schlichting, H., 1979, 'Boundary-Layer Theory,' McGraw-Hill Inc., pp. 230 - 233
  14. Horlock, J.H., 1973, 'Axial Flow Turbine,' Robert E. Krieger Publishing Co., pp. 124-126