The rapid growth in fossil fuels has resulted climate change that needs to be controlled the near future. Several methods have been proposed control change, including development of efficient energy conversion devices. Fuel cells are environmentally friendly devices can fuelled by green hydrogen, with only water as a by-product, or using different biofuels such biomass wastewater, urea biogas f...

Objectives • Research, develop, assemble, and test a 50 kW net polymer electrolyte membrane (PEM) fuel cell stack system comprised of a PEM fuel cell stack and the supporting gas, thermal, and water management subsystems. The PEM fuel cell stack system will be capable of integration with at least one of the fuel processors currently under development by Hydrogen Burner Technology (HBT) and Arth...

Mg-based materials have been investigated as hydrogen storage materials, especially for possible onboard storage in fuel cell vehicles for decades. Recently, with the development of large-scale fuel cell technologies, the development of Mg-based materials as stationary storage to supply hydrogen to fuel-cell components and provide electricity and heat is becoming increasingly promising. In this...

The present study focuses on the effect of air-fuel ratio on the performance of four cylinder hydrogen fueled direct injection internal combustion engine. GT-Power was utilized to develop the model for direct injection engine. Air-fuel ratio was varied from rich limit to a lean limit. The rotational speed of the engine was varied from 1250 to 4500 rpm. The acquired results shown that the air fu...

Powering airplanes by hydrogen, as reported on David Kramer in the December 2020 issue of Physics Today (page 27), is a nice theoretical idea that brings little practical benefit.Apart from difficulties handling hydrogen cryogenic liquid or gas at very high pressure, most serious problem with an aviation fuel isn’t weight tanks containing it but rather its low density, even liquid. Consider Toy...