Feasibility study on exergy recuperation of exhaust heat using electrochemical partial oxidation

T. Ozeki; Takao Nakagaki

doi:10.1299/kikaib.76.763_406

Feasibility study on exergy recuperation of exhaust heat using electrochemical partial oxidation

Research output: Contribution to journal › Article › peer-review

Abstract

Electrochemical partial oxidation (EPOx) of methane can convert exhaust heat into electricity as much as difference between change of Gibbs free energy and change of enthalpy. In this paper, we considered 30 kW power generation system combined Micro Gas Turbine and the Partial Oxdation Solid Oxide Fuel Cell using Gadolinium Doped Ceria as the electrolyte that has high oxide ion conductivity below 600°C. The cylindrical-shaped POSOFC is operated at 572°C recovering turbine exhaust heat of 593°C and accompanying production of hydrogen and carbon monoxide. According to the result of process simulation coupling with SOFC simulation including detailed polarization models, only addition of 16 liter POSOFC can increases the power generation efficiency by 8.5 points at fuel utilization of 80.1%.

Original language	English
Pages (from-to)	406-408
Number of pages	3
Journal	Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	76
Issue number	763
DOIs	https://doi.org/10.1299/kikaib.76.763_406
Publication status	Published - 2010 Mar
Externally published	Yes

Keywords

Energy conversion
Exergy recuperation
Micro gas turbine
Solid oxide fuel cell

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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title = "Feasibility study on exergy recuperation of exhaust heat using electrochemical partial oxidation",

abstract = "Electrochemical partial oxidation (EPOx) of methane can convert exhaust heat into electricity as much as difference between change of Gibbs free energy and change of enthalpy. In this paper, we considered 30 kW power generation system combined Micro Gas Turbine and the Partial Oxdation Solid Oxide Fuel Cell using Gadolinium Doped Ceria as the electrolyte that has high oxide ion conductivity below 600°C. The cylindrical-shaped POSOFC is operated at 572°C recovering turbine exhaust heat of 593°C and accompanying production of hydrogen and carbon monoxide. According to the result of process simulation coupling with SOFC simulation including detailed polarization models, only addition of 16 liter POSOFC can increases the power generation efficiency by 8.5 points at fuel utilization of 80.1%.",

keywords = "Energy conversion, Exergy recuperation, Micro gas turbine, Solid oxide fuel cell",

author = "T. Ozeki and Takao Nakagaki",

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journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",

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TY - JOUR

T1 - Feasibility study on exergy recuperation of exhaust heat using electrochemical partial oxidation

AU - Ozeki, T.

AU - Nakagaki, Takao

PY - 2010/3

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N2 - Electrochemical partial oxidation (EPOx) of methane can convert exhaust heat into electricity as much as difference between change of Gibbs free energy and change of enthalpy. In this paper, we considered 30 kW power generation system combined Micro Gas Turbine and the Partial Oxdation Solid Oxide Fuel Cell using Gadolinium Doped Ceria as the electrolyte that has high oxide ion conductivity below 600°C. The cylindrical-shaped POSOFC is operated at 572°C recovering turbine exhaust heat of 593°C and accompanying production of hydrogen and carbon monoxide. According to the result of process simulation coupling with SOFC simulation including detailed polarization models, only addition of 16 liter POSOFC can increases the power generation efficiency by 8.5 points at fuel utilization of 80.1%.

AB - Electrochemical partial oxidation (EPOx) of methane can convert exhaust heat into electricity as much as difference between change of Gibbs free energy and change of enthalpy. In this paper, we considered 30 kW power generation system combined Micro Gas Turbine and the Partial Oxdation Solid Oxide Fuel Cell using Gadolinium Doped Ceria as the electrolyte that has high oxide ion conductivity below 600°C. The cylindrical-shaped POSOFC is operated at 572°C recovering turbine exhaust heat of 593°C and accompanying production of hydrogen and carbon monoxide. According to the result of process simulation coupling with SOFC simulation including detailed polarization models, only addition of 16 liter POSOFC can increases the power generation efficiency by 8.5 points at fuel utilization of 80.1%.

KW - Energy conversion

KW - Exergy recuperation

KW - Micro gas turbine

KW - Solid oxide fuel cell

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