Hydrogen can be produced from water electrolysis which can operate at atmospheric pressure or high pressure. Today's industry including vehicle one, devotes efforts to produce high pressure hydrogen by using pressurized electrolyser. The purpose of this work is to estimate the ideal electrical energy needed for high pressure hydrogen under high pressure water electrolysis conditions. Calculations are based on the estimation of the enthalpy and free Gibbs energy of water electrolysis at various pressures and temperatures, referring to both the work of LeRoy & Onda. Resume - L'hydrogene peut-etre produit a partir de l'electrolyse de l'eau fonctionnant sous pression atmospherique ou a haute pression. Pour certaines industries, l'industrie chimique et surtout le secteur de l'automobile, beaucoup d'efforts sont canalises vers la production de l'hydrogene pur a haute pression, en employant des electrolyseurs pressurises. L'objet de cet article est d'estimer l'energie electrique ideale requise pour la production de l'hydrogene dans les conditions de l'electrolyse de l'eau a haute pression. Les approximations, inspirees des travaux de LeRoy et Onda, sont basees sur l'evaluation de l'enthalpie et de l'energie libre de Gibbs de l'electrolyse de l'eau a diverses pressions et temperatures.
[1]
J. Smith,et al.
Introduction to chemical engineering thermodynamics
,
1949
.
[2]
K. Kobe.
The properties of gases and liquids
,
1959
.
[3]
H. Gorgun.
Dynamic modelling of a proton exchange membrane (PEM) electrolyzer
,
2006
.
[4]
K. Onda,et al.
Prediction of Production Power for High-pressure Hydrogen by High-pressure Water Electrolysis
,
2004
.
[5]
Frano Barbir,et al.
Solar-hydrogen energy system : The choice of the future
,
1991
.
[6]
C. Bowen,et al.
The Thermodynamics of Aqueous Water Electrolysis
,
1980
.
[7]
F. Barbir.
PEM electrolysis for production of hydrogen from renewable energy sources
,
2005
.
[8]
R. Reid,et al.
The Properties of Gases and Liquids
,
1977
.
[9]
Ned Djilali,et al.
A techno-economic analysis of decentralized electrolytic hydrogen production for fuel cell vehicles
,
2005
.