@inproceedings{cb8b6278c6974f0e80806999c4afcc3c,
title = "Operation and performance limitations for solid oxide fuel cells and gas turbines in a hybrid system",
abstract = "Temperature limitations of Solid Oxide Fuel Cells (SOFC) in transient single operation and steady-state Hybrid System (HS) operation with Gas Turbines (GT) are presented. For transient SOFC simulations, an unsteady-state SOFC model was developed by upgrading a detailed validated steady-state model. As critical SOFC single operation modes, concerning the risk of material cracking due to exceeding SOFC transient temperature gradients, heat-up and cool-down are investigated. For minimization of transient SOFC temperature gradients at start-up and shut-down, a stepwise heat-up and cool-down procedure is proposed. Concerning HS off-design and part-load operation, the impact of SOFC temperature limitations on the operational window is investigated. Results show a reduced operational window due to exceeding local SOFC temperature gradients, which can be reduced by optimal adaptation of GT to SOFC size.",
keywords = "Temperature gradients, Hybrid system, Material cracking, Part-load modeling",
author = "Miriam Kemm and Andre Hildebrandt and Mohsen Assadi",
year = "2004",
language = "English",
volume = "7",
publisher = "American Society Of Mechanical Engineers (ASME)",
pages = "551--557",
booktitle = "Proceedings of the ASME Turbo Expo 2004",
address = "United States",
note = "2004 ASME Turbo Expo ; Conference date: 14-06-2004 Through 17-06-2004",
}