Shutdown and Startup of a SOFCGT Hybrid System

1 Copyright © 2006 by ASME Proceedings of FUELCELL2006 The 4th International Conference on FUEL CELL SCIENCE, ENGINEERING and TECHNOLOGY June 19-21, 2006, Irvine, CA FUELCELL2006-97036 SHUTDOWN AND STARTUP OF A SOFC/GT HYBRID SYSTEM Christoph Stiller... More

1 Copyright © 2006 by ASME Proceedings of FUELCELL2006 The 4th International Conference on FUEL CELL SCIENCE, ENGINEERING and TECHNOLOGY June 19-21, 2006, Irvine, CA FUELCELL2006-97036 SHUTDOWN AND STARTUP OF A SOFC/GT HYBRID SYSTEM Christoph Stiller Christoph. Stiller@ntnu. no Bjørn Thorud Bjorn@Thorud. com Olav Bolland Olav. Bolland@ntnu. no The Norwegian University of Science and Technology (NTNU) Department of Energy and Process Engineering (EPT) Kolbjørn Hejes vei 1B N-7491 Trondheim, Norway ABSTRACT During shutdown and startup trips, the SOFC/GT hybrid system and its components must be protected from critical incidents such as anode oxygen exposure, excessive temperature gradients and carbon deposition. A further task is to minimise the need for auxiliary equipment and resources. The paper shortly presents a previously published detailed model of a pressurised SOFC hybrid cycle for the analysis of transients and control strategies. Shutdown and startup procedures are proposed Less