소형 가스터빈의 입력 RPM변화에 대한 성능해석에 관한 연구
Study on the Performance Analysis in the Micro Gas Turbine with Different Input Revolutions
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this study, we analysed the influence of the flow and performance of the generated micro gas turbine with different rotational speeds. CFD analysis was also performed using commercial code called ANSYS CFX 14.5. It adopted the turbine of radial flow type suitable for power generation for small rotating equipment. The number of blades was designed with each radial turbine 8, vane nozzle 14. The boundary layer flow analysis was widely used to the SST model. Mass flow rate of the turbine was 1.45 kg/s. While the rpm varies from 38,000rpm to 48,000rpm under various boundary conditions, the distributions of Mach number and pressure were numerically analyzed for electric power output, turbine isentropic efficiency. We analyze the inlet pressure, outlet temperature, electric power output, turbine isentropic efficiency. It compared maximum and minimum revolution through CFD analysis. Power output of maximum revolution has been increased 18% more than minimum revolution. Isentropic efficiency of maximum revolution has been increased 16.5% more than minimumrevolution. Therefore, maximum power output was 332kW, amaximum isentropic efficiency was 33.2%.
Abstract
In this study, we analysed the influence of the flow and performance of the generated micro gas turbine with different rotational speeds. CFD analysis was also performed using commercial code called ANSYS CFX 14.5. It adopted the turbine of radial flow type suitable for power generation for small rotating equipment. The number of blades was designed with each radial turbine 8, vane nozzle 14. The boundary layer flow analysis was widely used to the SST model. Mass flow rate of the turbine was 1.45 kg/s. While the rpm varies from 38,000rpm to 48,000rpm under various boundary conditions, the distributions of Mach number and pressure were numerically analyzed for electric power output, turbine isentropic efficiency. We analyze the inlet pressure, outlet temperature, electric power output, turbine isentropic efficiency. It compared maximum and minimum revolution through CFD analysis. Power output of maximum revolution has been increased 18% more than minimum revolution. Isentropic efficiency of maximum revolution has been increased 16.5% more than minimumrevolution. Therefore, maximum power output was 332kW, amaximum isentropic efficiency was 33.2%.
참고문헌 (8)
- Harinck, J., "Computational Study of a High-Expansion Ratio Radial Organic Rankine Cycle Turbine Stator", Journal of Engineering for Gas Turbines and Power, 132, pp.1~6 (2010)
- 김태훈, "마이크로 가스 터빈용 연소기의 연료 노즐의 유량 분배에 관한 수치 해석적 연구", 한국연소학회지, 19(4), pp.8~13 (2014), 한국연소학회[DOI]
- 이종준, "마이크로 가스터빈 발전시스템의 운전성능 분석", 한국유체기계학회 논문집, 8(5), pp.13~21 (2005), 한국유체기계학회
- 신현동, "200kW급 마이크로 가스터빈 시스템의 설계 변수 민감도 해석", 한국유체기계학회 논문집, 15(6), pp.39~45 (2012), 한국유체기계학회[DOI]
- 모장오, "베인노즐 출구각도에 따른 100kW급 구심터빈의 성능 및 내부유동의 영향", 한국마린엔지니어링학회지, 35(6), pp.757~764 (2011), 한국마린엔지니어링학회
- 이동렬, "유동장 해석을 통한 승용차 원심 회전차의 형상 설계", 한국기계기술학회지, 13(3), pp.49~56 (2011), 한국기계기술학회
- 이동렬, "열전달 해석에 의한 파워 증폭기 방열기의 형상 최적화", 한국기계기술학회지, 13(3), pp.1~6 (2011), 한국기계기술학회
- Song, R. S., "Study on the Flow Analysis in the Micro Gas Turbine with Different Rotational Speeds", Proceeding of SAREK, pp.421~425 (2015)