scholarly journals System optimization demonstrator for aircraft propulsion technology using fuel cells

2021 ◽  
Author(s):  
Erik Uhlár ◽  
◽  
Jozef Čerňan
Keyword(s):  
Fuel Cells ◽  
Research And Development ◽  
Energy Production ◽  
System Optimization ◽  
Simulation Software ◽  
Flight Simulation ◽  
Software Platform ◽  
Engine Piston ◽  
Personal Transportation ◽  
Aircraft Propulsion

In order to help accelerate transition to sustainable and eco-friendly personal transportation in a single engine piston aircraft category we’ve developed a simulation software platform of hydrogen powered aircraft for further research and development. Measurements were carried out on a real reference airplane Cessna 172 R and were crosschecked with an airplane flight manual as well as a computer flight simulation. We also focused on a software-based safety and economy optimization by components usage ratio improvement and inflight energy production and transfer limitations.

A fuzzy logic neural network algorithm for compressor crankshaft-rolling bearing system optimization

2021 ◽  
pp. 1-7
Author(s):  
Zheng Zhang ◽  
Jianrong Zheng
Keyword(s):  
Neural Network ◽  
Fuzzy Logic ◽  
Dynamic Analysis ◽  
Weighted Average ◽  
Rolling Bearing ◽  
System Optimization ◽  
Simulation Software ◽  
Network Algorithm ◽  
Neural Network Algorithm ◽  
Bearing System

Taking the crankshaft-rolling bearing system in a certain type of compressor as the research objective, dynamic analysis software is used to conduct detailed dynamic analysis and optimal design under the rated power of the compressor. Using Hertz mathematical formula and the analysis method of the superstatic orientation problem, the relationship expression between the bearing force and deformation of the rolling bearing is solved, and the dynamic analysis model of the elastic crankshaft-rolling bearing system is constructed in the simulation software ADAMS. The weighted average amplitude of the center of the neck between the main bearings is used as the target, and the center line of the compressor cylinder is selected as the design variable. Finally, an example analysis shows that by introducing the fuzzy logic neural network algorithm into the compressor crankshaft-rolling bearing system design, the optimal solution between the design variables and the objective function can be obtained, which is of great significance to the subsequent compressor dynamic design.

scholarly journals Utilisation of coal for energy production in fuel cells

2016 ◽  
Vol 10 ◽  
pp. 00019
Author(s):  
Magdalena Dudek ◽  
Tadeusz Olkuski ◽  
Barbara Tora ◽  
Przemysław Grzywacz ◽  
Alicja Rapacz-Kmita
Keyword(s):  
Fuel Cells ◽  
Energy Production

Understanding small-molecule electro-oxidation on palladium based compounds – a feature on experimental and theoretical approaches

2018 ◽  
Vol 47 (24) ◽  
pp. 7864-7869 ◽  
Author(s):  
Saurav Ch. Sarma ◽  
Sebastian C. Peter
Keyword(s):  
Fuel Cells ◽  
Formic Acid ◽  
Small Molecules ◽  
Electrochemical Oxidation ◽  
Small Molecule ◽  
Energy Production ◽  
Green Energy ◽  
Theoretical Approaches ◽  
Electro Oxidation

Electrochemical oxidation of small molecules such as ethanol, methanol and formic acid on Pd based compounds has a great impact on green energy production in fuel cells.

The Thermodynamic Evaluation and Optimization of Fuel Cell Systems

2006 ◽  
Vol 3 (2) ◽  
pp. 155-164 ◽  
Author(s):  
N. Woudstra ◽  
T. P. van der Stelt ◽  
K. Hemmes
Keyword(s):  
Heat Transfer ◽  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Energy Conversion ◽  
System Optimization ◽  
Fuel Conversion ◽  
Cell Systems ◽  
Electrochemical Conversion ◽  
Conversion Efficiencies

Energy conversion today is subject to high thermodynamic losses. About 50% to 90% of the exergy of primary fuels is lost during conversion into power or heat. The fast increasing world energy demand makes a further increase of conversion efficiencies inevitable. The substantial thermodynamic losses (exergy losses of 20% to 30%) of thermal fuel conversion will limit future improvements of power plant efficiencies. Electrochemical conversion of fuel enables fuel conversion with minimum losses. Various fuel cell systems have been investigated at the Delft University of Technology during the past 20 years. It appeared that exergy analyses can be very helpful in understanding the extent and causes of thermodynamic losses in fuel cell systems. More than 50% of the losses in high temperature fuel cell (molten carbonate fuel cell and solid oxide fuel cell) systems can be caused by heat transfer. Therefore system optimization must focus on reducing the need for heat transfer as well as improving the conditions for the unavoidable heat transfer. Various options for reducing the need for heat transfer are discussed in this paper. High temperature fuel cells, eventually integrated into gas turbine processes, can replace the combustion process in future power plants. High temperature fuel cells will be necessary to obtain conversion efficiencies up to 80% in the case of large scale electricity production in the future. The introduction of fuel cells is considered to be a first step in the integration of electrochemical conversion in future energy conversion systems.

scholarly journals Microbial Fuel Cells, Related Technologies, and Their Applications

2018 ◽  
Vol 8 (12) ◽  
pp. 2384 ◽  
Author(s):  
Gene Drendel ◽  
Elizabeth R. Mathews ◽  
Lucie Semenec ◽  
Ashley E. Franks
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Engineering Design ◽  
Microbial Fuel Cell ◽  
Microbial Fuel Cells ◽  
Energy Production ◽  
Emerging Technology ◽  
Engineering Material ◽  
Cell Systems ◽  
Material Sciences

Microbial fuel cells present an emerging technology for utilizing the metabolism of microbes to fuel processes including biofuel, energy production, and the bioremediation of environments. The application and design of microbial fuel cells are of interest to a range of disciplines including engineering, material sciences, and microbiology. In addition, these devices present numerous opportunities to improve sustainable practices in different settings, ranging from industrial to domestic. Current research is continuing to further our understanding of how the engineering, design, and microbial aspects of microbial fuel cell systems impact upon their function. As a result, researchers are continuing to expand the range of processes microbial fuel cells can be used for, as well as the efficiency of those applications.

The Simulation Analysis of Tunnel Wind Cooling System in Shenyang Area

2013 ◽  
Vol 724-725 ◽  
pp. 1474-1477
Author(s):  
Xiao Ming Zhang ◽  
Yang Gao ◽  
Xiao Zhang
Keyword(s):  
Optimization Design ◽  
Simulation Analysis ◽  
Cooling System ◽  
System Optimization ◽  
Simulation Software ◽  
Equivalent Diameter ◽  
Tunnel Length ◽  
Surrounding Areas ◽  
Entrance Velocity ◽  
Tunnel Entrance

Applied FLUENT simulation software to research the influence of tunnel length, tunnel entrance velocity, tunnel equivalent diameter and tunnel buried depth four important factors on the tunnel wind cooling system in Shenyang area. The results show that, with the increase of tunnel length and tunnel buried depth and with the decrease of tunnel entrance velocity and tunnel equivalent diameter, the outdoor air which passed into the tunnel cooling amplitude increases. For the tunnel wind cooling system optimization design in Shenyang area and the surrounding areas, the advices are that tunnel buried depth should not be more than 6m and tunnel entrance velocity should not be more than 5m/s.

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