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소형 가압형 연료전지/가스터빈 하이브리드 시스템의 성능 비교 해석
박성구(S. K. Park),유병준(B. J. You),김동섭(T. S. Kim),손정락(J. L. Sohn),이영덕(Y. D. Lee),안국영(K. Y. Ahn) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
Design performances of the fuel cell / gas turbine hybrid power generation systems based on two different fuel cells (PEMFC, SOFC) have been comparatively analyzed. In each system, the fuel cell operates at an elevated pressure corresponding to the compressed air pressure of the gas turbine. Typical design parameter of PEMFC and SOFC of 10kW class are assumed. By varying the turbine inlet temperature of the gas turbine, efficiency upgrade due to the hybridization is estimated for the two systems. The SOFC is predicted to exhibit not only a better fuel cell efficiency but also a greater efficiency upgrade through the hybridization. For both systems, increasing the turbine inlet temperature increases the power portion of the gas turbine, but decreases the system efficiency.
가압형 고체산화물 연료전지 / 가스터빈 하이브리드 시스템 설계에서 터빈입구 바이패스의 효과
박성구(S. K. Park),손정락(J. L. Sohn),김동섭(T. S. Kim) 한국유체기계학회 2007 유체기계 연구개발 발표회 논문집 Vol.- No.-
Hybrid power generation systems combining a solid oxide fuel cell and a gas turbine is promising due to their high efficiency. In the pressurized hybrid system, the operating condition of the gas turbine may play a critical role in designing the hybrid system. In particular, prevention of surge of the compressor can be a critical issue. The existence of fuel cell between the compressor and the turbine may cause an additional pressure loss and thus compressor operating points tend to approach the surge if the original turbine inlet temperature is pursued. In this study, bypassing some of the turbine inlet gas directly to the turbine exit side is simulated. Its effects on suppressing the surge problem and change in performance characteristics are discussed.
신동수(D.S.Shin),박성구(S.K.Park) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
This paper sudies experimentally for axial flow fan at automobile aircondition. The two fans is particular have been carry out varied test condition. The main pararmeters investigated were rotational speed, skew angle, stagger angle, band, and number of blades for low noise fan. The effect has been measured of running a fan in conjuction with radiator matrix. The present experimental show that efficiency, overall sound pressure level and acoustic spectrum. The estimated values are quite satisfactory.<br/>