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자료유형
학술저널
저자정보
저널정보
한국유체기계학회 한국유체기계학회 논문집 유체기계저널 제12권 제3호
발행연도
2009.6
수록면
44 - 52 (9page)

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Small scale steam turbines are used as mechanical drivers in chemical process plant or power generators. In this study, a design technology was developed for a 100kW class steam turbine which will be used for removing CO₂ from the emission gas on a reheated cycle system. This turbine is operated at a low inlet total pressure of 5 kgf/㎠. It consists of two stages and operates at the partial admission. For the meanline analysis, a performance prediction method was developed and it was validated through the performances on the operating small steam turbines which are using at plants. Their results showed that the output power was predicted within 10% deviation although the steam turbines adopted in this analysis were operated at different flow conditions and rotor size. The turbine blades was initially designed based on the computed results obtained from the meanline analysis. A supersonic nozzle was designed on the basis of the operating conditions of the turbine, and the first stage rotor was designed using a supersonic blade design method. The stator and second stage rotor was designed using design parameters for the blade profile. Finally, Those blades were iteratively modified from the flow structures obtained from the three-dimensional flow analysis to increase the turbine performance. The turbine rotor system was designed so that it could stably operate by 76% separation margin with tilting pad bearings.

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ABSTRACT
1. 서론
2. 성능예측
3. 노즐설계
4. 익형설계
5. 회전체설계
6. 결론
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UCI(KEPA) : I410-ECN-0101-2009-554-018478157