By Roberto Bove, S. Ubertini
This booklet is meant to be a pragmatic connection with all scientists and graduate scholars who're looking to outline a mathematical version for good Oxide gasoline phone (SOFC) simulation.
At current, there's a powerful curiosity from either and academia in SOFC modeling, however the assets are at present restricted to technical papers, which generally fail to supply easy figuring out of the phenomena happening in an SOFC, in addition to to explain the several ways wanted for various requirements.
This state of affairs is by contrast with the current call for in SOFC modeling, coming from scientists, scholars and younger researchers.
This work has 3 major targets:
Firstly, to supply the mandatory idea in the back of SOFC operation.
Secondly, to investigate diverse techniques for SOFC modeling.
Thirdly, to present the reader with the entire valuable instruments for outlining his/her personal version, in accordance with his/her particular needs.
The volume is based in elements. half one provides the fundamental concept, and the overall equations describing SOFC operation phenomena. half offers with the applying of the idea to functional examples, the place diversified SOFC geometries, configurations (from unmarried cells to hybrid systems), working stipulations (steady-state and dynamic), and assorted phenomena (e.g. functionality, temperature and chemical species, and mechanical pressure distribution) are analyzed in detail.
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Additional resources for Modeling solid oxide fuel cells: methods, procedures and techniques
14 shows the efficiency of the reference cycle. The system efficiency ηsyst is defined hereby as 2 Thermodynamics of Fuel Cells 41 ηsyst = wt . 103) The cell temperature TFC is again the temperature T of the process environment. The work wt CC produced by the Carnot cycle CC increases with higher TFC and the work wt FCrev produced by FC decreases with lower TFC as already expected. The work wt syst of the system is independent of TFC (or nearly independent in the case of the simplified process).
The system efficiency ηsyst decreases strongly for an excess air λ ≈ 3 because the heat engine HE3 stops 2 Thermodynamics of Fuel Cells 45 Fig. 17 The influence of the heat engine design on the system efficiency ηsyst of SOFC–heat engine hybrid cycles. caused by a lack of available heat. The total waste heat of the SOFC is used now to supply the heat engines HE1 and HE2 supplying the reformer and the evaporator respectively. This causes the decrement of the system efficiency ηsyst with higher λ in the region 3 < λ < 6 by a decreasing work produced by HE1 and HE2.
19. , Executive summary, in Proceedings Workshop on Very High Efficiecy Fuel Cell/Gas Turbine Power Cycles, October 1995, US Department of Energy, Office of Fossil Energy Morgantown Energy Technology Center, 1995. 50 W. Winkler and P. Nehter 20. , Status of tubular SOFC field demonstration, Journal of Power Sources 86, 2000, pp. 134–139. 21. , Evaluation of a Solid Oxide Fuel Cell and gas turbine combined cycle with different cell component materials, in Proceedings 7th International Symposium on Solid Oxide Fuel Cells, Tsukuba, Japan, H.
Modeling solid oxide fuel cells: methods, procedures and techniques by Roberto Bove, S. Ubertini