Solid Oxide Fuel Cells Utilizing Dimethyl Ether Fuel

Murray, Erica Perry; Harris, Stephen J.; Jen, Hung-Wen

doi:10.1149/1.1496484

Cited by 58 publications

(51 citation statements)

References 11 publications

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“…DME does not pose significant environmental concerns and is mainly used as a low-temperature solvent in laboratory synthesis, as an aerosol propellant in canisters, and recently as a possible clean-fuel [57,58]. DME has been considered as a convenient source of H 2 [59][60][61] and also a potential fuel for SOFC [62,63].…”

Section: Dimethyl Ether Liquefied Petroleum Gas and Other Conventiomentioning

confidence: 99%

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

2009

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Solid oxide fuel cells (SOFC) have the advantage of being able to operate with fuels other than hydrogen. In particular, liquid fuels are especially attractive for powering portable applications such as small power generators or auxiliary power units, in which case the direct utilization of the fuel would be convenient. Although liquid fuels are easier to handle and transport than hydrogen, their direct use in SOFC can lead to anode deactivation due to carbon formation, especially on traditional nickel/yttria stabilized zirconia (Ni/YSZ) anodes. Significant advances have been made in anodic materials that are resistant to carbon formation but often these materials are less electrochemically active than Ni/YSZ. In this review the challenges of using liquid fuels directly in SOFC, in terms of gas-phase and catalytic reactions within the anode chamber, will be discussed and the alternative anode materials so far investigated will be compared.

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Section: Dimethyl Ether Liquefied Petroleum Gas and Other Conventiomentioning

confidence: 99%

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

2009

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“…, biofuels 8 and energy carriers which can be converted to hydrogen-rich gas, including ammonia 9 and dimethyl ether 10 . Additionally, a future potential of solid oxide fuel cells can be foreseen in power-to-gas technologies.…”

Section: -7mentioning

confidence: 99%

Computational fluid dynamics analysis of an innovative start-up method of high temperature fuel cells using dynamic 3d model

Kupecki

Mich

Motyliński

2017

Polish Journal of Chemical Technology

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The article presents a numerical analysis of an innovative method for starting systems based on high temperature fuel cells. The possibility of preheating the fuel cell stacks from the cold state to the nominal working conditions encounters several limitations related to heat transfer and stability of materials. The lack of rapid and safe startup methods limits the proliferation of MCFCs and SOFCs. For that reason, an innovative method was developed and verifi ed using the numerical analysis presented in the paper. A dynamic 3D model was developed that enables thermo-fl uidic investigations and determination of measures for shortening the preheating time of the high temperature fuel cell stacks. The model was implemented in ANSYS Fluent computational fl uid dynamic (CFD) software and was used for verifi cation of the proposed start-up method. The SOFC was chosen as a reference fuel cell technology for the study. Results obtained from the study are presented and discussed.

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“…Micro-combined heat and power (µ-CHP) systems, producing both heat and electricity in cogeneration, provide potential reductions in carbon emissions and costs through the efficient utilization of fuel and elimination of the use of centrally generated electricity from the grid. A significant benefit of the µ-CHP is its overall efficiency, which can reach 85-90% [1,2], and operation with clean, alternative fuels [3][4][5]. The core part of a CHP system is a primary unit, which can be an engine, microturbine or solid oxide fuel cells, which additionally produces waste heat.…”

Section: Introductionmentioning

confidence: 99%

Modeling the dynamic operation of a small fin plate heat exchanger – parametric analysis

Motyliński

Kupecki

2015

Archives of Thermodynamics

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Given its high efficiency, low emissions and multiple fuelling options, the solid oxide fuel cells (SOFC) offer a promising alternative for stationary power generators, especially while engaged in micro-combined heat and power (µ-CHP) units. Despite the fact that the fuel cells are a key component in such power systems, other auxiliaries of the system can play a critical role and therefore require a significant attention. Since SOFC uses a ceramic material as an electrolyte, the high operating temperature (typically of the order of 700-900• C) is required to achieve sufficient performance. For that reason both the fuel and the oxidant have to be preheated before entering the SOFC stack. Hot gases exiting the fuel cell stack transport substantial amount of energy which has to be partly recovered for preheating streams entering the stack and for heating purposes. Effective thermal integration of the µ-CHP can be achieved only when proper technical measures are used. The ability of efficiently preheating the streams of oxidant and fuel relies on heat exchangers which are present in all possible configurations of power system with solid oxide fuel cells. In this work a compact, fin plate heat exchanger operating in the high temperature regime was under consideration. Dynamic model was proposed for investigation of its performance under the transitional states of the fuel cell system. Heat exchanger was simulated using commercial modeling software. The model includes key geometrical and functional parameters. The working conditions of the power unit with SOFC vary due to the several factors, such as load changes, heating and cooling procedures of the stack and others. These issues affect parameters of the incoming streams to the heat exchanger. The mathematical model of the heat exchanger is based on 1 Corresponding Author. E-mail: konrad.motylinski@ien.com.pl 86 K. Motyliński and J. Kupecki a set of equations which are simultaneously solved in the iterative process. It enables to define conditions in the outlets of both the hot and the cold sides. Additionally, model can be used for simulating the stand-alone heat exchanger or for investigations of a semiadiabatic unit located in the hotbox of the µ-CHP unit.

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Solid Oxide Fuel Cells Utilizing Dimethyl Ether Fuel

Cited by 58 publications

References 11 publications

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

Computational fluid dynamics analysis of an innovative start-up method of high temperature fuel cells using dynamic 3d model

Modeling the dynamic operation of a small fin plate heat exchanger – parametric analysis

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