What target cost for the advanced processes for massive hydrogen production?

International audienc

Hydrogen production from high temperature electrolysis: Economic impact of the interactions of the electrolyser investment, lifespan and performance

International audienc

Competitiveness of hydrogen production by High Temperature Electrolysis: Impact of the heat source and identification of key parameters to achieve low production costs

International audienceAmong the more efficient and sustainable processes that are studied for massive hydrogen production, High Temperature steam Electrolysis seems a promising process. When operating in the autothermal mode, this process does not require a high temperature source for the electrolysis reaction but only a thermal energy source able to supply enough heat to vaporize water. Using a simplified economic model, we assess the impact of the temperature, pressure and thermal energy cost of the heat source on the process competitiveness. Results show that medium temperature thermal energy sources could be coupled to the High Temperature Electrolysis process without resulting in strong overcosts. Besides, key parameters are also identified among the electrolyzer characteristics. Relevant results indicate that R&D on electrolysis cells must continue focusing on the lifespan of these equipments, for which a target lifespan of 3 years could be established

Modelling of the electric and thermal characteristics of solid oxide electrolysis cells used for hydrogen production

International audienc

Technoeconomic study of the high temperature steam electrolysis process coupled with a sodium nucle

International audienc

Economic study of water steam production by biomass or domestic waste incineration.

International audienc

Taking into account environmental criteria in the design of a process: Application to steam methane reforming by performing a multi-objective techno-economic optimisation of the system

Conference information: 3rd International Green Energy Conference Vasteras, SWEDEN, JUN 18-20, 2007International audienceIn the current context of sustainable development, industrial process development should no longer only take economic goals into account. Environmental criteria should be considered as well. Therefore, multi-objective optimisations should be carried out. A techno-economic model of steam methane reforming was implemented through the use of genetic algorithms. Different criteria can be then simultaneously considered. The optimisation result represents one objective versus the other: the hydrogen production cost and the carbon dioxide emissions of the process. This allows making compromises between the objectives. These compromises can be led either by regulations or by an overcost linked to taxes, for example

On the possibilities of producing hydrogen by high temperature electrolysis of water steam supplied from biomass or waste incineration units

International audienceThe incineration of biomass and waste is considered to produce water steam, which then would feed the High Temperature Electrolysis (HTE) process in order to produce hydrogen. For these energy sources, in a French context, results show that water steam production cost could be in a range of 0.02 to 0.06 euros per steam kilogram. Potentially 78 million vehicles could be fed with hydrogen coming from the steam produced by the incineration of the currently nonvalorised biomass and domestic waste. Furthermore, for each energy source the optimized hydrogen production cost estimation has been performed, including investment and operation costs

Hydrogen production by high temperature electrolysis coupled with an EPR, SFR or HTR: techno-economic study and coupling possibilities

International audienceHydrogen production by high temperature electrolysis coupled with three nuclear reactors (the European pressurised reactor, the sodium-cooled fast reactor and the very high temperature reactor) was studied in terms of perspectives and hydrogen production costs. Firstly, we present the features of producing water steam by using the three nuclear reactors. Secondly, we present the hydrogen production cost for the HTE process coupled with each type of nuclear reactor. These costs are optimal values of the hydrogen production cost for the mentioned couplings and they were estimated by using a genetic algorithm procedure. High potentiality for these HTE couplings was assessed and contrary to steam source temperatures, the electricity price appeared to be a key parameter for low hydrogen production costs