Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Modeling for the Performance Analysis of a Tubular SOFC/MGT Hybrid Power System

원통형 고체산화물 연료전지와 마이크로 가스터빈 하이브리드 시스템의 성능해석을 위한 모델링

  • Song, T.W. (School of Mech. and Aero Eng., Seoul Nat'l Univ.) ;
  • Sohn, J.L. (School of Mech. and Aero Eng., Seoul Nat'l Univ.) ;
  • Kim, J.H. (Turbomachinery branch, Korea Aerospace Research Institute) ;
  • Kim, T.S. (Dept. of Mech. Eng., Inha Univ.) ;
  • Ro, S.T. (School of Mech. and Aero Eng., Seoul Nat'l Univ.) ;
  • Suzuki, K. (Dept. of Machinery and control system, Shibaura Inst. of Tech)
  • Published : 2004.04.28
Download PDF
⟨ Previous Next ⟩

Abstract

Performance of a solid oxide fuel cell (SOFC) can be enhanced by converting thermal energy of its high temperature exhaust gas to mechanical power using a micro gas turbine (MGT). A MGT plays also an important role to pressurize and warm up inlet gas streams of the SOFC. In this study, the influence of performance characteristics of the tubular SOFC on the hybrid power system is discussed. For this purpose, detailed heat and mass transfer with reforming and electrochemical reactions in the SOFC are mathematically modeled, and their results are reflected to the performance analysis. The analysis target is 220kWe SOFC/MGT hybrid system based on the tubular SOFC developed by Siemens-Westinghouse. Special attention is paid to the ohmic losses in the tubular SOFC counting not only current flow in radial direction, but also current flow in circumferential direction through the anode and cathode.

Keywords