Thermodynamic analysis of the fuel cells efficiency-Thermodynamic stability approach

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Thermodynamic analysis of the fuel cells efficiency-Thermodynamic stability approach

Popis výsledku v původním jazyce

Energy conversion in fuel cells is performed by electrochemical and transport processes in the polymer electrolyte membrane, gas diffusion layers, catalyst layers, and in the pipes transporting hydrogen, oxygen, water and air into and out of the fuel cell. All these processes are analyzed from the point of view of phenomenological thermodynamics, which inherently describes their synergy (namely, the coupling between electric conductivity and diffusivity, electrochemical processes at the electrodes, etc.). The total efficiency of the energy transformation is discussed in two parts: Firstly, reflecting the fuel and waste transport; secondly, the chemical energy conversion into electricity. A cyclic process with constant enthalpy gives an adequate base for derivation of the fundamental relation between actual and theoretical efficiencies, temperatures differences, power density, etc. Moreover, the analysis of transfer coefficients for fuel (Hydrogen and Air) delivery and for waste (water)

Název v anglickém jazyce

Thermodynamic analysis of the fuel cells efficiency-Thermodynamic stability approach

Popis výsledku anglicky

Energy conversion in fuel cells is performed by electrochemical and transport processes in the polymer electrolyte membrane, gas diffusion layers, catalyst layers, and in the pipes transporting hydrogen, oxygen, water and air into and out of the fuel cell. All these processes are analyzed from the point of view of phenomenological thermodynamics, which inherently describes their synergy (namely, the coupling between electric conductivity and diffusivity, electrochemical processes at the electrodes, etc.). The total efficiency of the energy transformation is discussed in two parts: Firstly, reflecting the fuel and waste transport; secondly, the chemical energy conversion into electricity. A cyclic process with constant enthalpy gives an adequate base for derivation of the fundamental relation between actual and theoretical efficiencies, temperatures differences, power density, etc. Moreover, the analysis of transfer coefficients for fuel (Hydrogen and Air) delivery and for waste (water)

Druh

D - Stať ve sborníku

CEP obor

JE - Nejaderná energetika, spotřeba a užití energie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

20th World Hydrogen Energy Conference (WHEC 2014)

ISBN

978-1-63439-655-4

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

1986-1993

Název nakladatele

Committee of WHEC2014

Místo vydání

Red Hook, New York

Místo konání akce

Gwangju, South Korea

Datum konání akce

15. 6. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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