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Hydrogen is the most abundant element in the world and produces only water vapor as a result of chemical reaction that occurred in fuel cells. Therefore, fuel cell electric vehicles, which use hydrogen as fuel, continue its growing trend in the sector. In this study, an energy distribution comparison is carried out between fuel cell electric vehicle and fuel cell hybrid electric vehicle. Hybridization of fuel cell electric vehicle is designed by equipped a traction battery (15 kW). Modeled vehicles were prepared under AVL Cruise program with similar chassis and same fuel cell stacks for regular determining process. Numerical analyses were presented and graphed with instantaneous results in terms of sankey diagrams with a comparison task. WLTP driving cycle is selected for both vehicles and energy input/output values given with detailed analyses. The average consumption results of electric and hydrogen usage is found out as 4.07 kWh and 1.125 kg/100 km respectively for fuel cell electric vehicle. On the other hand, fuel cell hybrid electric vehicle's average consumption results figured out as 3.701 kWh for electric and 0.701 kg/100 km for hydrogen consumption. As a result of this study, fuel cell hybrid electric vehicle was obtained better results rather than fuel cell electric vehicle according to energy and hydrogen consumption with 8% and 32%, respectively. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Today, the important challenges with the utilization of hydrogen in power-producing applications (internal combustion engines and fuel cells) are its delivery and storage and these create a big hesitation regarding the application safety. Ammonia, which can be regarded as the most promising alternative fuel to hydrogen, provides the possibility of storage in liquid form at low pressures and high temperatures. This study was carried out to investigate how to compensate the drawbacks of using ammonia as the main fuel in a gas turbine by hydrogen and hydroxy-gas enrichment. During the experiments, propane that is standard working fuel of the gas turbine, neat ammonia, as well as a 10 L/min ammonia fuel enriched with 3 L/min, 5 L/min, and 7 L/min hydroxy gas, were utilized. The results show that hydroxy enrichments cause improvements in the performance data as well as emission values due to the absence of any carbon emissions. When the performance outputs are examined, it has been shown that the power values of NH3 + 3 HHO and NH3 + 5 HHO fuels are 10.98% and 3.65% lower than propane, whereas NH3 + 7 HHO fuel produces 4.12% more power, and the desired performance values are reached. It has been also fund that NOx emissions should be kept under control in addition to the increase in the performance and elimination of the carbon emissions. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

1st International Mediterranean Science and Engineering Congress (IMSEC), WOS: 000412033800073, In this study, an overview has been presented a classification of the vehicles using hydrogen with different ways. The using of hydrogen in vehicles has been categorized into two main categories as designs in which hydrogen is burned and energy is generated by conversion to electricity. The designs of internal combustion vehicles with using hydrogen via burning, the designs of the fuel cell vehicles that using hydrogen by converting into electricity and their hybrid versions have been introduced. In the automotive industry, the structure and future advantages of hydrogen fuel cell electric vehicles have been handled in a separate title. Onboard storage, safety, the capital cost and operating cost of the different design of vehicles have been analyzed rigorously. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Nowadays, alternative fuels usage is increasing due to limited oil reserves and increasing petrol demands. There are many advantages and disadvantages of alternative fuels when used alone. In this study, alternative fuels with various specifications are mixed in different proportions to tolerate these disadvantages. Hydroxy (HHO) and hydroxy enriched compressed natural gas (HHOCNG) fuel mixtures with pilot diesel injection was used as dual-fuels on a non-modified diesel engine and investigated their performance parameters such as torque (T), power (P), brake specific fuel consumption (BSFC), indicated mean effective pressure (IMEP) and volumetric efficiency (ηv). This study conducted with AVL Boost simulation program and all graphs are plotted to compare HHO and HHOCNG fuel mixtures performance outputs, additionally all results are compared with neat diesel performance values. The general results show that, HHOCNG enrichment has the best improvement values with respect to single HHO enrichment. Overall improvements for BSFC, torque, power and IMEP values of 25 HHOCNG are 4,086%, 1.67%, 4.13% and 3.67%, respectively.