Modelling of Pressurised Hybrid Systems Based on Integrated Planar Solid Oxide Fuel Cell (IP‐SOFC) Technology

Abstract

This work describes different models, developed by the Thermochemical Power Group at the University of Genoa (Italy), for the simulation of solid oxide fuel cell and gas turbine hybrid systems. The paper focuses on both “cores” of the system: the fuel cell stack on the one hand and the turbomachinery and the auxiliaries on the other hand. Therefore, in the first part of the paper the models developed for the analysis of the Rolls‐Royce Integrated Planar SOFC cells are presented; the results are compared to experimental data, and carefully analysed and discussed. In the second part of the paper, design and off design models of IP‐SOFC pressurised hybrid systems in the range 250 kW–20 MW are presented; the hybrid performance results are presented and discussed, also taking ambient condition effects and a possible control strategy into account. Finally, using an in‐house general purpose transient system analysis code (TRANSEO code), where chemical composition, heat transfer, and fluid dynamic influences vs. time are considered in detail, a preliminary time dependent investigation of a pressurised hybrid system behaviour is presented.

Chemical and structural stability of La0.6Sr0.4Co0.2Fe0.8O3− ceramic vs. medium/high water vapor pressure

“…Operating conditions (typically 10-20 bar p(H 2 O)) are the must. The use of high water pressure by industrialists allows an increased efficiency and in consequence decreasing of hydrogen production/conversion cost [22][23][24][25][26][27]. Our previous studies, performed in a strict collaboration with Industrial partner, showed however that high water pressure can significantly accelerate a material ageing [20].…”

Modelling mass transport in solid oxide fuel cell anodes: a case for a multidimensional dusty gas-based model

“…Models that simulate only the anode (Suwanwarangkul et al, 2003;Yakabe et al, 2000Yakabe et al, , 2004Costamagna et al, 1998) or the cathode Svensson et al, 1996;Chen et al, 2004), a single SOFC cell (Zhu et al, 2005;Zhu and Kee, 2003;Achenbach, 1994;Inui et al, 2006;Iwata et al, 2000;Ji et al, 2006) or a whole stack (Recknagle et al, 2003;Petruzzi et al, 2003;Chan and Ding, 2005;Burt et al, 2004) have been reported. Additionally, both steady state (Aguiar et al, 2002(Aguiar et al, , 2004 and dynamic models (Iora et al, 2005;Achenbach, 1995;Xue et al, 2004Xue et al, , 2005Petruzzi et al, 2003;Aguiar et al, 2005;Magistri et al, 2005) have been developed. Several reported models have been constructed using programming languages (Fortran, C++ or MATLAB) while others use commercial simulation packages, (e.g.…”

The Development and Application of a Novel Optimisation Strategy for Solid Oxide Fuel Cell‐Gas Turbine Hybrid Cycles

“…However, to date only a few SOFC-GT hybrid systems have been built and operated in demonstrations by companies such as Siemens [3], Mitsubishi Heavy Industry [4] and Rolls Royce [5]. Nevertheless, theoretical studies have been widely undertaken and results are available in the literature, involving the thermodynamic analysis, design and performance modelling of SOFC-GT hybrids through individual and collaborative efforts [6][7][8][9][10][11][12].…”