Detailed thermodynamic analysis of fuel cell efficiency

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10190184" target="_blank" >RIV/00216208:11320/13:10190184 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23640/13:43919855

Výsledek na webu

<a href="http://jetc2013.ing.unibs.it/proceedings.htm" target="_blank" >http://jetc2013.ing.unibs.it/proceedings.htm</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Detailed thermodynamic analysis of fuel cell efficiency

Popis výsledku v původním jazyce

Efficiency of hydrogen fuel cells is analyzed using a non-equilibrium theory of mixtures based on classical irreversible thermodynamics. The efficiency is expressed in terms of processes taking place inside the fuel cells revealing which processes are responsible for efficiency losses. This provides a new method of optimization. It is shown that efficiency losses are not only given by entropy production rate but also by some additional terms, which become important if steep gradients of temperature arepresent. Consequently, we compare the new theory with the standard entropy production minimization approach. Finally, we discuss effects of the additional terms in polymer electrolyte membrane fuel cells and in solid oxide fuel cells showing that the newtheory gives the same results as the standard theory in the former case while it becomes important in the latter case.

Název v anglickém jazyce

Detailed thermodynamic analysis of fuel cell efficiency

Popis výsledku anglicky

Efficiency of hydrogen fuel cells is analyzed using a non-equilibrium theory of mixtures based on classical irreversible thermodynamics. The efficiency is expressed in terms of processes taking place inside the fuel cells revealing which processes are responsible for efficiency losses. This provides a new method of optimization. It is shown that efficiency losses are not only given by entropy production rate but also by some additional terms, which become important if steep gradients of temperature arepresent. Consequently, we compare the new theory with the standard entropy production minimization approach. Finally, we discuss effects of the additional terms in polymer electrolyte membrane fuel cells and in solid oxide fuel cells showing that the newtheory gives the same results as the standard theory in the former case while it becomes important in the latter case.

Druh

D - Stať ve sborníku

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0088" target="_blank" >ED2.1.00/03.0088: Centrum nových technologií a materiálů (CENTEM)</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

PROCEEDINGS OF THE 12TH JOINT EUROPEAN THERMODYNAMICS CONFERENCE

ISBN

978-88-89252-22-2

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

458-463

Název nakladatele

Cartolibreria SNOOPY s.n.c.

Místo vydání

Brescia, Italy

Místo konání akce

Brescia, Italy

Datum konání akce

1. 7. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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