The Experts below are selected from a list of 108 Experts worldwide ranked by ideXlab platform
Farrukh Khalid - One of the best experts on this subject based on the ideXlab platform.
-
Life cycle environmental impact comparison of solid oxide fuel cells fueled by natural gas, hydrogen, ammonia and methanol for combined heat and power generation
International Journal of Hydrogen Energy, 2018Co-Authors: Yusuf Bicer, Farrukh KhalidAbstract:Abstract This study aims to provide a comprehensive environmental life cycle assessment of heat and power production through solid oxide fuel cells (SOFCs) fueled by various chemical feeds namely; natural gas, hydrogen, ammonia and methanol. The life cycle assessment (LCA) includes the complete phases from raw material extraction or chemical fuel synthesis to consumption in the electrochemical reaction as a cradle-to-grave approach. The LCA study is performed using GaBi software, where the selected impact assessment Methodology is ReCiPe 1.08. The selected environmental impact categories are climate change, fossil depletion, human toxicity, water depletion, particulate matter formation, and photochemical oxidant formation. The production pathways of the feed gases are selected based on the mature technologies as well as emerging water electrolysis via wind electricity. Natural gas is extracted from the wells and processed in the processing plant to be fed to SOFC. Hydrogen is generated by steam methane Reforming Method using the natural gas in the plant. Methanol is also produced by steam methane Reforming and methanol synthesis reaction. Ammonia is synthesized using the hydrogen obtained from steam methane Reforming and combined with nitrogen from air in a Haber-Bosch plant. Both hydrogen and ammonia are also produced via wind energy-driven decentralized electrolysis in order to emphasize the cleaner fuel production. The results of this study show that feeding SOFC systems with carbon-free fuels eliminates the greenhouse gas emissions during operation, however additional steps required for natural gas to hydrogen, ammonia and methanol conversion, make the complete process more environmentally problematic. However, if hydrogen and ammonia are produced from renewable sources such as wind-based electricity, the environmental impacts reduce significantly, yielding about 0.05 and 0.16 kg CO 2 eq., respectively, per kWh electricity generation from SOFC.
Dong-yang Wang - One of the best experts on this subject based on the ideXlab platform.
-
Thermodynamic analysis of fossil fuels Reforming for fuel cell application
International Journal of Hydrogen Energy, 2020Co-Authors: Yu Song, Kai Han, Dong-yang WangAbstract:Abstract At present, the infrastructure of hydrogen production, storage and transportation is poor. Fuel Reforming for hydrogen production from liquid fossil fuels such as kerosene, petrol and diesel is of great significance for wide application of on-board fuel cell and distributed energy resources. In this work, the produced and heat released of kerosene, petrol and diesel reformed by different Reforming Methods (autothermal Reforming, partial oxidation, steam Reforming) were studied by means of thermodynamic analysis. Based on the thermodynamic analysis, the effect of Reforming Methods on the system's ideal thermal efficiency are analysed. The results show that the hydrogen concentration of syngas obtained from steam Reforming is highest regardless of the fuel types. The hydrogen yielded by per unit volume of diesel is largest under same Reforming Method. Autothermal Reforming has the largest ideal thermal efficiency among three Reforming Methods.
Wu Diyong - One of the best experts on this subject based on the ideXlab platform.
-
The experimental research for production of hydrogen from n-octane through partially oxidizing and steam Reforming Method
International Journal of Hydrogen Energy, 2001Co-Authors: Wang Yanhui, Wu DiyongAbstract:The reaction of producing hydrogen for fuel cell which used normal octane as gasoline or diesel oil reactant through catalytic partial oxidizing and steam Reforming Method has been researched in the fixed-bed reactor. A series of catalysts that mainly used nickel supported on Al2O3 have been studied. It showed that the activity of the catalyst was increased with the content of nickel by using only nickel supported on Al2O3. However, its activity was not obviously increased when the content of nickel was over 5 wt%. The conversion ratio of normal octane and hydrogen selectivity were higher at higher reaction temperature. The single noble catalyst of palladium had better stability compared with that of platinum catalyst although their activity and selectivity were similar during the experimental reaction temperature. The prepared bimetallic catalyst consisted mainly of nickel and little noble metal of palladium supported on Al2O3. It showed that this catalyst had higher activity and selectivity, especially at lower or higher reaction temperatures compared with single nickel or palladium catalyst, and better stability. ((C) 2001 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.
Yusuf Bicer - One of the best experts on this subject based on the ideXlab platform.
-
Life cycle environmental impact comparison of solid oxide fuel cells fueled by natural gas, hydrogen, ammonia and methanol for combined heat and power generation
International Journal of Hydrogen Energy, 2018Co-Authors: Yusuf Bicer, Farrukh KhalidAbstract:Abstract This study aims to provide a comprehensive environmental life cycle assessment of heat and power production through solid oxide fuel cells (SOFCs) fueled by various chemical feeds namely; natural gas, hydrogen, ammonia and methanol. The life cycle assessment (LCA) includes the complete phases from raw material extraction or chemical fuel synthesis to consumption in the electrochemical reaction as a cradle-to-grave approach. The LCA study is performed using GaBi software, where the selected impact assessment Methodology is ReCiPe 1.08. The selected environmental impact categories are climate change, fossil depletion, human toxicity, water depletion, particulate matter formation, and photochemical oxidant formation. The production pathways of the feed gases are selected based on the mature technologies as well as emerging water electrolysis via wind electricity. Natural gas is extracted from the wells and processed in the processing plant to be fed to SOFC. Hydrogen is generated by steam methane Reforming Method using the natural gas in the plant. Methanol is also produced by steam methane Reforming and methanol synthesis reaction. Ammonia is synthesized using the hydrogen obtained from steam methane Reforming and combined with nitrogen from air in a Haber-Bosch plant. Both hydrogen and ammonia are also produced via wind energy-driven decentralized electrolysis in order to emphasize the cleaner fuel production. The results of this study show that feeding SOFC systems with carbon-free fuels eliminates the greenhouse gas emissions during operation, however additional steps required for natural gas to hydrogen, ammonia and methanol conversion, make the complete process more environmentally problematic. However, if hydrogen and ammonia are produced from renewable sources such as wind-based electricity, the environmental impacts reduce significantly, yielding about 0.05 and 0.16 kg CO 2 eq., respectively, per kWh electricity generation from SOFC.
Yu Song - One of the best experts on this subject based on the ideXlab platform.
-
Thermodynamic analysis of fossil fuels Reforming for fuel cell application
International Journal of Hydrogen Energy, 2020Co-Authors: Yu Song, Kai Han, Dong-yang WangAbstract:Abstract At present, the infrastructure of hydrogen production, storage and transportation is poor. Fuel Reforming for hydrogen production from liquid fossil fuels such as kerosene, petrol and diesel is of great significance for wide application of on-board fuel cell and distributed energy resources. In this work, the produced and heat released of kerosene, petrol and diesel reformed by different Reforming Methods (autothermal Reforming, partial oxidation, steam Reforming) were studied by means of thermodynamic analysis. Based on the thermodynamic analysis, the effect of Reforming Methods on the system's ideal thermal efficiency are analysed. The results show that the hydrogen concentration of syngas obtained from steam Reforming is highest regardless of the fuel types. The hydrogen yielded by per unit volume of diesel is largest under same Reforming Method. Autothermal Reforming has the largest ideal thermal efficiency among three Reforming Methods.