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499 results for “fuels”
The fractal nature of the three-phase boundary: A heuristic approach to the degradation of nanostructured solid oxide fuel cell anodes
<p>Data underpinning figures and analysis as well as a greyscale tomographic dataset</p>
Fig. 1 in A Case ofCnestus mutilatus(Blandford) (Curculionidae: Scolytinae: Xyleborini) Females Damaging Plastic Fuel Storage Containers in Louisiana, U.S.A.
Fig. 1. Plastic gasoline storage container (23-L) with numerous holes created by female Cnestus mutilatus. White arrows indicate embedded beetles. Black arrow indicates detailed inset of holes and elytral apices of embedded beetles.
Dataset for the paper "Nanostructured Catalyst Layer Allowing Production of Ultralow Loading Electrodes for Polymer Electrolyte Membrane Fuel Cells with Superior Performance" published in ACS Appl. Energy Mater.
<p>The data in this spreadsheet was used to produce the figures in the paper</p><p>Authors:</p><p>Colleen Jackson, Michalis Metaxas, Jack Dawson, Anthony Kucernak</p><p>Title:</p><p>Nanostructured Catalyst Layer Allowing Production of Ultralow Loading Electrodes for Polymer Electrolyte Membrane Fuel Cells with Superior Performance</p><p>Journal:</p><p>ACS Appl. Energy Mater. </p><p>DOI:</p><p>10.1021/acsaem.3c01987</p><p>Please cite the above reference if you wish to use this data</p><p>DOI of data:</p><p>10.5281/zenodo.10256698</p>
Decentralised Production of e-fuels for Aviation: calculation results
<p>This dataset contains the underlying results of the final and published version of the study: "Decentralised production of e-fuels for aviation: Implications and trade-offs of a targeted small-scale production of Sustainable Aviation Fuel based on Fischer-Tropsch Synthesis" - <a title="Link to landing page via DOI" href="https://doi.org/10.1039/D3SE01156A">https://doi.org/10.1039/D3SE01156A</a></p>
DT-MAS architecture for smart maintenance of aircraft fuel distribution systems
<p><strong>Project Goal:</strong> Develop a digital twin architecture using a multi-agent system and AI for smart maintenance of aircraft distribution systems.</p> <p><strong>Objective:</strong> Build a reliable model that accurately represents the real system in an offline environment.</p> <p><strong>Methodology : </strong></p> <ul> <li>Developed a simulation based on an aircraft distribution system model, mimicking real system behavior.</li> <li>Created a dataset with four runs, five scenarios per run, and five operating points per scenario.</li> <li>Simulated healthy and faulty conditions using MATLAB-injected faults across various categories.</li> <li>Focused on four system components: hydraulic pump, tanks, engines, and pumps.</li> <li>Generated data for 11 healthy and faulty scenarios, including six fault types: <ul> <li>Noise on instruments</li> <li>Abnormal instrument readings</li> <li>Minor service problems</li> <li>External leakage</li> <li>Parameter deviation</li> <li>Structural deficiency</li> </ul> </li> <li>Features used for analysis: <ul> <li>Pump flow for pumps</li> <li>Pump motor speed for hydraulic pumps</li> <li>Driver power</li> <li>Tank volume and temperature</li> </ul> </li> </ul> <p><strong>Expected Results:</strong></p> <ul> <li>Compare performance of different asset health estimation models.</li> <li>Develop new predictive maintenance strategies.</li> <li>Predict and emulate complex aircraft behavior through multi-agent systems and AI.</li> </ul>
A top-down method for estimating regional fossil fuel carbon emissions based on satellite XCO2 retrievals
Open the record for dataset details and reuse information.
Code and data for: Ladder fuels, not canopy volumes, consistently associated with forest wildfire severity even in extreme topographic-weather conditions
<p>Code and associated metrics for Hakkenberg et.al. 2024. Ladder fuels rather than canopy volumes consistently predict wildfire severity even in extreme topographic-weather conditions</p> <p>Contact chrishakkenberg@gmail.com for all questions and requests</p>
Supporting data for climate-driven tree mortality and fuel aridity increase wildfire's potential sensible heat flux
<p><span>Wildfire is capable of rapidly releasing the energy stored in forests, with the amount of water in live and dead biomass acting as a regulator on the amount and rate of energy release. Here we used temperature and fuel moisture data to examine climate-driven changes in fuel moisture content over the past three decades. We then calculated the changes in energy release (energy release component and fire radiant energy) for two forests that experienced drought and bark beetle mortality and were subsequently burned by wildfires. We found that mortality transitioned substantial amounts of biomass from live to dead pools. Coupled with climate-driven decreases in fuel moisture content, this change in fuel availability increased the amount of energy that could be released during wildfire in these forests. Our results demonstrate that climate-driven tree mortality and fuel aridity may be increasing the amount of energy that is released during wildfire.</span></p>
Simulating a Chemically-Fueled Molecular Motor with Nonequilibrium Molecular Dynamics
<p>This .zip file contains the code, simulation scripts and settings, and figure generation scripts for our manuscript "Simulating a Chemically-Fueled Molecular Motor with Nonequilibrium Molecular Dynamics." More detailed descriptions are found in the 0README.txt files within the .zip folder.</p> <p> </p> <p>Manuscript link:</p> <p>https://arxiv.org/abs/2102.06298</p> <p> </p> <p>Manuscript abstract:</p> <p>Most computer simulations of molecular dynamics take place under equilibrium conditions—in a closed, isolated system, or perhaps one held at constant temperature or pressure. Sometimes, extra tensions, shears, or temperature gradients are introduced to those simulations to probe one type of nonequilibrium response to external forces. Catalysts and molecular motors, however, function based on the nonequilibrium dynamics induced by a chemical reaction's thermodynamic driving force. In this scenario, simulations require chemostats capable of preserving the chemical concentrations of the nonequilibrium steady state. We develop such a dynamic scheme and use it to observe cycles of a new particle-based classical model of a catenane-like molecular motor. Molecular motors are frequently modeled with detailed-balance-breaking Markov models, and we explicitly construct such a picture by coarse graining the microscopic dynamics of our simulations in order to extract rates. This work identifies inter-particle interactions that tune those rates to create a functional motor, thereby yielding a computational playground to investigate the interplay between directional bias, current generation, and coupling strength in molecular information ratchets.</p>
Restoration and fuel hazard reduction result in equivalent reductions in Crown fire behavior in dry conifer forests
<p>Over the past several decades, the management of historically frequent-fire forests in the western U.S. has received significant attention due to the linked ecological and social risks posed by the increased occurrence of large, contiguous patches of high-severity fire. As a result, efforts are underway to simultaneously reduce potential fire and fuel hazards and restore characteristics indicative of historical forest structures and ecological processes that enhance the diversity and quality of wildlife habitat across landscapes. Despite widespread agreement on the need for action, there is a perceived tension among scientists concerning silvicultural treatments that modify stands to optimally reduce potential fire behavior (fuel hazard reduction) versus those that aim to emulate historical forest structures and create structurally complex stands (restoration). In this work, we evaluated thinning treatments in the Black Hills National Forest that exemplify the extremes of a treatment continuum that ranges from fuel hazard reduction to restoration. The goal of this work was to understand how the differing 3-dimensional stand structures created by these treatment approaches altered potential fire behavior. Our results indicate that restoration treatments created higher levels of vertical and horizontal structural complexity than the fuel hazard reduction treatments but resulted in similar reductions to potential crown fire behavior. There were some tradeoffs identified as the restoration treatments created larger openings which generated faster mean rates of fire spread; however, these increased spread rates did not translate to higher levels of canopy consumption. Overall, our results suggest that treatments can create vertical and horizontal complexity desired for restoration and wildlife habitat management while reducing fire hazard and that they can be used in concert with traditional fuel hazard reduction treatments to reduce landscape scale fire risk. We also provide some suggestions to land managers seeking to design and implement prescriptions that emulate historical structures and enhance forest complexity.</p>
Photographic data on the influence of the composition, preparation method, time and fuel system on the size of water droplets in a fuel-water emulsion
<p>This data was collected during the research aimed at understanding the influence of the composition, mixing time and time between the production and application of the fuel-water emulsion, as well as the influence of the fuel pump of the miniature gas turbine GTM-120 on the droplet size of the water-fuel emulsion. An emulsion with a water content of 3% to 15% and an emulsifier content of 1% to 3% was tested. The basic fuel in the conducted tests was Jet-A1 with 5% oil additive. </p>
Multiphysics Modeling of Ultrasonic-assisted biomass torrefaction for fuel pellets production
<p>When an ultrasound wave propagates through a volume of biomass medium, the majority of the energy in the acoustic field is absorbed locally by the biomass, resulting in the generation of heat. This torrefaction effect results in a temperature increase of the biomass, converting biomass into a coal-like intermediate with upgraded fuel properties over the original biomass. However, few analyses can be found in the literature explaining the mechanism of ultrasound-assisted biomass torrefaction. This research aims to model an ultrasound-assisted biomass torrefaction system. The developed multiphysics model depicts the piezoelectric effect of a transducer, the vibration amplitude at the output end of the ultrasonic horn, and the acoustic intensity and temperature distributions in the biomass medium. The vibration amplitude and frequency of the ultrasonic horn were measured by a non-contact capacitive sensor, and it is verified the model can accurately simulate the ultrasonic vibration of the experimental system. The temperature at the center of the biomass was measured to validate the model’s temperature prediction. Both simulation and experiment showed that ultrasound-assisted biomass torrefaction can create torrefied fuel pellet within 60 seconds.</p>
A high-performance Ni-CeO2/Ni/Ni-Y2O3·ZrO2 three-layer anode for direct iso-octane feeding of solid oxide fuel cells
<p>Solid oxide fuel cells (SOFCs) directly fed with iso-octane are expected to be power sources of mobile devices and automobiles. However, the conventional anode catalysts nickel (Ni) or cerium oxide (CeO2) used for direct feeding of iso-octane do not suppress carbon deposition or generate high-power. In this study, we investigated the Ni-CeO2/Ni/Ni-yttria-stabilized zirconia (YSZ) three-layer anode to establish the suppression of carbon deposition and high-power generation in the SOFC. The anode consists of a Ni-CeO2 catalyst layer as the top layer, a Ni catalyst layer as the second layer, and a Ni-YSZ catalyst layer as the third layer on top of the electrolyte. The concept of three-layer anode is follows: Fuel reforming occurs in the Ni-CeO2 layer, the reformed H2 or CO is electrochemically oxidized in the Ni-YSZ catalyst layer, and the Ni catalyst middle layer prevents the reaction between YSZ and CeO2. Scanning electron microscopy and electrochemical characterization confirmed carbon deposition suppression and improved power generation. The anode showed no carbon deposition and generated high-power, 600 mA cm−2 and 150 mW cm−2, at 950 °C and a steam/carbon ratio of 3.0. Additionally, we discuss the fuel reforming reactions on the three-layer electrode by the results of exhaust gas analysis.</p>
SOC Fuel, Steam, and Air starvation monitoring using advanced tools
<p>Polarisation, impedance and THD data of fuel, steam, and air starvation of SOC with different sensitivity analyses</p>
Dataset for "Investigation of convective transport in the gas diffusion layer used in polymer electrolyte fuel cell"
<p>Dataset to all the figures in the paper (including Supplementary Material):</p> <p>Investigation of convective transport in the gas diffusion layer used in polymer electrolyte fuel cell</p> <p>Beruski, O., Lopes, T., Kucernak, A. R., Perez, J.</p> <p>Phys. Rev. Fluids, 2, 103501, 2017.</p> <p> </p>
Aviation Fuel Production Pathways from Lignocellulosic Biomass via Alcohol Intermediates – A Technical Analysis - Supplementary Material
<p>Data for the associated publication </p>
Illustrative materials for presentation B1113, European Fuel Cell Forum 2024, Lucerne, Switzerland.
<p>Internal EIS data file (text): 18eis1_700c_cc-6a_180h2o+20h2+500air.eisdf</p> <p>Formal equivalent circuit model file (text): 18_drt20240502085244.eism</p> <p>Equivalent circuit model file (text): 18_eqc20240502090321.eism</p> <p>DRT report: 18_drt20240502085232.xlsx</p> <p>Augmented DRT report: 18aug_drt20240502092610.xlsx</p> <p>Equivalent circuit fit report: 18_eqc20240502090124.xlsx<br><br></p>
Fuel model maps for Portugal (2016-2023)
<p>This dataset contains annual fire behavior fuel model maps for Portugal (mainland) between 2016 and 2023. The resolution is 1 ha.</p> <p> </p>
OpenFoam model output for "A Fuel Cell Power Supply System Equipped with Artificial Gill Membranes for Underwater Applications"
<p>Dataset of numerical experiments carried out with OpenFOAM v 10 as used in the manuscript "A Fuel Cell Power Supply System Equipped with Artificial Gill Membranes for Underwater Applications" by Lucas Merckelbach and Prokopios Georgopanos.</p> <p> </p>
Correlation analysis for paper "Energy Storage Profit Risk under Stochastic Fuel Prices"
<p>This is a supplementary data for reproducibility.</p>
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International Brain Laboratory public data
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OpenNeuro
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