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 …

Hydrogen-fueled internal combustion engines are considered to be more efficient and cleaner alternatives to their …, control and optimization of hydrogen engines. To serve for this broader purpose, a computational model, which has been widely … used for gasoline and diesel engines, is investigated for its capability to simulate hydrogen engines. Specifically, fuel …

) and a mixture of natural gas and hydrogen, respectively. The mixtures of CNG and hydrogen were named HCNG. …

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 …

performance at low load conditions. This paper experimentally investigated the co-effect of cylinder cutoff and hydrogen addition … engine equipped with an electronically controlled hydrogen injection system and a hybrid electronic control unit. The engine …, respectively. For each cylinder closing strategy, the hydrogen energy fraction in the total fuel (βH2) was increased from 0% to …

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 …

This paper compared the effects of hydrogen and hydrogen–oxygen blends (hydroxygen) additions on the performance of a … engine equipped with a hydrogen and oxygen injection system. A hybrid electronic control unit was applied to adjust the … hydrogen and hydroxygen volume fractions in the intake increasing from 0% to about 3% and keep the hydrogen-to-oxygen mole …