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학술대회자료
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신형기 (한국에너지기술연구원) 조종재 (한국에너지기술연구원) 조준현 (한국에너지기술연구원) 나호상 (한국에너지기술연구원) 최봉수 (한국에너지기술연구원) 노철우 (한국에너지기술연구원) 이범준 (한국에너지기술연구원) 이길봉 (한국에너지기술연구원) 백영진 (한국에너지기술연구원)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2017년도 학술대회
발행연도
2017.11
수록면
536 - 540 (5page)

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Korea Institute of Energy Research(KIER) has researched Supercritical CO2(SCO2) power cycle since 2013. Now, KIER have constructed 60 kWe class SCO2 test loop and is testing this facility. This paper is about the axial impulse turbine that was installed this facility will be explained. SCO2 power generation cycle could increase thermal efficiency of cycle and decrease turbomachinery size to 1/20th when compared with typical steam power cycle. But this small turbomachinery make it difficult to develop proto type Supercritical Carbon dioxide(S-CO2) cycle equipment. Major problem of SCO2 turbine is small volume flow rate and huge axial force. Small volume flow rate and turbine size means high rotating speed. Also, turbine inlet pressure of SCO2 cycle was over 100 bar and outlet pressure over 77bar to maintain super critical state. Such high pressure made huge axial force and it made difficult to choose bearings. To reduce axial force and rotating speed, an axial impulse turbine that was operated in partial admission condition was chosen in KIER system. Another advantage of axial impulse turbine was relatively small performance reduction in partial admission operation when it was compared with reaction type turbine. This paper introduces design and test results of KIER’s turbo-generator for S-CO2 cycle. Turbine inlet temperature was 200℃ and pressure was 13,500kPa for test condition. This test was carried out at KIER’s Pilot Plant Laboratory. The test condition was that maximum pressure and temperature were 100 bar, 205 ℃ and this cycle and turbine was operated during 45 minutes.

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Abstract
1. 서론
2. 충동형 축류 터빈 설계
3. SCO2 사이클 및 터빈 시험
4. 결론
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