... Abstract Many companies are investigating switching from conventional fossil fuels to “green” fuels such as hydrogen to reduce CO 2 emissions. This assumes hydrogen is made by an environmentally-friendly method such as electrolysis using renewable energy. However, there are concerns...

... Abstract Solar Thermochemical Hydrogen Production (STCH) is a promising technology that uses high-temperature heat directly to split water. The authors have previously proposed a Reactor Train System (RTS) that addresses the largest source of inefficiency in state-of-the-art STCH systems...

... Abstract Energy shortages and environment pollution are among the most important problems all over the world. As a clean and renewable energy carrier, hydrogen is expected to be one of the most promising alternative solutions to the energy and environmental problems in the near future. However...

... Abstract A combustion oscillation experiment showed combustion oscillation frequencies of around 350 Hz when only natural gas was used as fuel and approximately 200 and 400 Hz when a hydrogen–natural gas mixture was used. To analyze the resonant frequency, two- and four-region models...

... Abstract A novel technology model is presented that simplifies the technical requirements to produce hydrogen and clean energy from water splitting high temperature electrolysis process. Thus the model developed was applied to progress research in water based /hydrogen Internal Combustion...

... is to explore the effect of adding Hydrogen to diesel engines. An experiment was conducted on a single-cylinder engine, under diverse running conditions with different flow rates of hydrogen. The experiment is intended to prove that hydrogen injection adapts to engine operation without major modifications...

... Abstract This work presents a computational fluid dynamic-based numerical study of the effect of burner position and number of reformer tubes on an annular steam methane-reforming (SMR) reactor for hydrogen (H 2 ) production. Three different burner configurations such as single co-axial inside...

... Abstract This study introduces a new method of methane pyrolysis in a rotary chemical reactor using wave rotor technology. The patented technology has been developed by New Wave Hydrogen, Inc. (New Wave H 2 or NWH 2 ) . The concept introduces an efficient method of hydrogen production driven...

..., average temperature and local temperature gradients of both the SOEC and SOFC were within desired tolerances. However, for severe conditions of wind power deficit, H 2 had to be supplied from previous windy days’ storage or imported. dynamic modeling renewable energy system hydrogen thermal...

... Abstract Utilizing renewable gases including biogas and renewable hydrogen instead of natural gas helps reduce greenhouse gases from fossil fuel combustion. Due to the fuel property variation, it is not practical to replace pipeline natural gas with these renewable fuels while still keeping...

... Abstract Current unmanned aerial vehicle (UAV) propulsion technologies includes hydrogen fuel cells, battery systems, and internal combustion engines (ICE). However, relying on a single propulsion technology might result in a limited operational range. This can be mitigated by utilizing...

... industries. The Mg scraps have been used for the hydrogen generation via hydrolysis. In an attempt we conducted the experimental study and optimization of hydrolysis of Mg scraps waste in the presence of HCl to generate hydrogen. This work optimizes the process of using Mg scraps to produce H 2 , Mg(OH) 2...

... The purpose of this study is thermoeconomic performance evaluation of alkaline water hydrogen production assisted by geothermal energy. In this study energy, exergy and cost balances of combined systems of each component for hydrogen production assisted by geothermal energy will be written...

... hydrogen (GH2) and liquid anhydrous ammonia (NH 3 ) fuels can: GH2 in large solution-mined salt caverns, NH 3 in surface tanks, both pressurized and refrigerated. “Smart Grid” is emerging as primarily a DSM (demand side management) strategy to encourage energy conservation. Making the electricity grid...

... products’ characteristics are examined for active carbon and carbon black laden particles. Higher particle volume fraction resulted in higher radiative absorption and enhanced kinetics. 11 09 2009 solar energy thermochemistry hydrogen carbon methane decomposition reactor particle...

... used is relatively small and, at this stage, can be thought of as a two dimensional combustor duct rather than a true engine. The scope of this project involves the simultaneous calculations and analysis of both combustion and high-speed compressible flow. Thermodynamic data was used to create hydrogen...

... The use of alternative fuels such as natural gas (methane) in spark-ignition (SI) engines is beneficial to the environment as it reduces emissions of pollutants such as NO x from these engines with slight penalty on the performance. This paper investigated the use of methane and hydrogen...

... and Hydrogen. The natural gas can be represented as the Methane (CH 4 ), which is the main ingredient. The simulation evaluations were done by increasing the initial concentrations of H 2 , changing the initial temperature (inlet temperature), or varying the equivalence ratio. The numerical simulations were...

... A novel biomass hydrogen production technique by integrating gasification and absorption reactions has been suggested. The method involves gasification of biomass in presence of a CO 2 sorbent. Ethanol was used as the model biomass compound and CaO was the representative sorbent. Equilibrium...

... Recent advances in PEM fuel cell systems have demonstrated their role in the production of clean and efficient power. However, due to complexities and safety concerns in the storage and transport of hydrogen, development of on-board fuel processing of hydrocarbon into hydrogen is being...