Hydrogen is a kind of green fuel, and is considered as the substitute oil fuel for future. Although many of literature … plant for 1000 m3 hydrogen fuels. In where, the efficiencies of hydrogen fuel generation are 29.9%, 15.6%, 10.5% and 7 … respectively; and the ratio between the combustion heat of generated hydrogen fuels and the total electric energy consumption is …

Hydrogen demand as an energy currency is anticipated to rise significantly in the future, with the emergence of a … hydrogen economy. Hydrogen production is a key component of a hydrogen economy. Several production processes are commercially … other hydrogen production processes. Recent advances in hydrogen production by thermochemical water decomposition are …

In this paper, energy and exergy analyses of the geothermal-based hydrogen production via thermochemical water …

) of a dual-fuel diesel engine (H2 (hydrogen)–diesel) using exergy analysis. The maximum available work increased with H2 …

Possibly one of the most significant advantages that hydrogen may have as a fuel is its potential for increased second … hydrocarbon-based fuels. A computational investigation of this effect is pursued for the case of mixtures of hydrogen and natural … function of hydrogen content of the fuel and the operating parameters of the engine. Of particular importance is the …

Coal gasification is seen as an attractive way for hydrogen production. The main advantage of this approach is the low …, pressure-swing adsorption process for hydrogen separation, combined cycle for power production and essential auxiliary … loss takes place in the gasifier. The overall exergy efficiency of the coal-to-hydrogen system is equal to ca. 57%, while …

This study deals with solar hydrogen production from the two-step iron oxide thermochemical cycle (Fe3O4/FeO). This … exothermic steam hydrolysis of the reduced metal oxide (wustite) for hydrogen generation. Thermodynamic and experimental … investigations have been performed to quantify the performances of this cycle for hydrogen production. High-temperature decomposition …

Hydrogen, a promising and clean energy carrier, could potentially replace the use of fossil fuels in the transportation … sector. Currently, no environmentally attractive, large-scale, low-cost and high-efficiency hydrogen production process is … for CO2-free production of hydrogen. The method is environmentally friendly since it uses only water and solar energy …

gas), methanol, Fischer–Tropsch fuels, hydrogen, as well as heat and electricity, from several biowastes generated in the … synthesis is preferred when exergetic efficiency is the objective parameter, but hydrogen process is more efficient when the …

An exergetic analysis has been performed on a gasification-based bio-hydrogen generation system consisting of an ASU … operating parameters on the hydrogen yield and cold gas efficiency. It is observed that, with 95% oxygen in the gasifying agent … and with gasifier equivalence ratio of 4.0, the process generates 107.8 g hydrogen per kg of dry biomass (on ash free …