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95 results for “STEAM”
Autothermal steam reforming reactors with thermally conductive walls for hydrogen production
<p><strong>Autothermal steam reforming reactors with thermally conductive walls for hydrogen production</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>It is necessary to provide a reactor where the catalytically active components are immobilized on adjacent sides of the monolith dividing walls such that heat transfer can occur via purely conduction through the wall from one catalytic process to the second catalytic process. It is also necessary to provide a reactor where the monolith body is demountable from the inlet and outlet manifolds such that catalyst replacement and recovery of spent catalyst can be easily performed. It is also necessary to provide a reactor where the heat transfer characteristics are decoupled from the reactant or product fluid velocities such that the system can operate with moderate gas velocities and with low pressure drops. It is also necessary to provide a reactor of low thermal inertia and high heat load such that rapid start up and fast response to load transients can be achieved. The design comprises, in one form thereof, a chemical processing method to thermally contact an endothermic and an exothermic reaction without mixing the two streams, utilizing a thermally coupled monolith reactor. A ceramic or metal monolith is modified to produce a structure containing at least two sets of discrete flow channels and which are separated by a number of common walls. Manifolds are arranged such that one reaction mixture flows through one set of channels and a different reaction mixture flows through the second. Catalytic material, which is active for the relevant reaction, is coated onto the inner walls of each of the sets of channels. The two reactions are chosen such that one is exothermic and one is endothermic, such that the energy required by the endothermic process is supplied directly through the dividing wall from the exothermic process occurring on the opposing side. This method of heat transfer completely decouples the gas phase hydrodynamics from the heat transfer process.</p> <p>Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second)</p> <p>0 12.1245</p> <p>0.00025 12.2056</p> <p>0.0005 12.3371</p> <p>0.00075 12.3931</p> <p>0.001 12.3704</p> <p>0.00125 12.2891</p> <p>0.0015 12.1645</p> <p>0.00175 12.0076</p> <p>0.002 11.8272</p> <p>0.00225 11.63</p> <p>0.0025 11.4214</p> <p>0.00275 11.2059</p> <p>0.003 10.987</p> <p>0.00325 10.7674</p> <p>0.0035 10.5496</p> <p>0.00375 10.3354</p> <p>0.004 10.1263</p> <p>0.00425 9.9232</p> <p>0.0045 9.72691</p> <p>0.00475 9.53772</p> <p>0.005 9.35585</p> <p>0.00525 9.18161</p> <p>0.0055 9.01491</p> <p>0.00575 8.85575</p> <p>0.006 8.70412</p> <p>0.00625 8.55976</p> <p>0.0065 8.42235</p> <p>0.00675 8.29183</p> <p>0.007 8.16813</p> <p>0.00725 8.05097</p> <p>0.0075 7.94006</p> <p>0.00775 7.83509</p> <p>0.008 7.73603</p> <p>0.00825 7.64259</p> <p>0.0085 7.55447</p> <p>0.00875 7.47149</p> <p>0.009 7.39325</p> <p>0.00925 7.31962</p> <p>0.0095 7.25041</p> <p>0.00975 7.18541</p> <p>0.01 7.12413</p> <p>0.01025 7.06625</p> <p>0.0105 7.01189</p> <p>0.01075 6.96101</p> <p>0.011 6.91331</p> <p>0.01125 6.86823</p> <p>0.0115 6.82574</p> <p>0.01175 6.78591</p> <p>0.012 6.74833</p> <p>0.01225 6.7128</p> <p>0.0125 6.67938</p> <p>0.01275 6.648</p> <p>0.013 6.61842</p> <p>0.01325 6.5905</p> <p>0.0135 6.56401</p> <p>0.01375 6.53896</p> <p>0.014 6.51549</p> <p>0.01425 6.49316</p> <p>0.0145 6.47196</p> <p>0.01475 6.45184</p> <p>0.015 6.43277</p> <p>0.01525 6.41475</p> <p>0.0155 6.39735</p> <p>0.01575 6.38068</p> <p>0.016 6.36501</p> <p>0.01625 6.35036</p> <p>0.0165 6.33607</p> <p>0.01675 6.32215</p> <p>0.017 6.30899</p> <p>0.01725 6.29632</p> <p>0.0175 6.28384</p> <p>0.01775 6.27168</p> <p>0.018 6.2601</p> <p>0.01825 6.24866</p> <p>0.0185 6.23744</p> <p>0.01875 6.22675</p> <p>0.019 6.21628</p> <p>0.01925 6.20588</p> <p>0.0195 6.19553</p> <p>0.01975 6.18524</p> <p>0.02 6.17518</p> <p>0.02025 6.16499</p> <p>0.0205 6.1546</p> <p>0.02075 6.1444</p> <p>0.021 6.13426</p> <p>0.02125 6.12398</p> <p>0.0215 6.11344</p> <p>0.02175 6.10277</p> <p>0.022 6.09166</p> <p>0.02225 6.08022</p> <p>0.0225 6.06884</p> <p>0.02275 6.05715</p> <p>0.023 6.04483</p> <p>0.02325 6.03193</p> <p>0.0235 6.01875</p> <p>0.02375 6.00527</p> <p>0.024 5.99094</p> <p>0.02425 5.97588</p> <p>0.0245 5.96041</p> <p>0.02475 5.94431</p> <p>0.025 5.92737</p> <p>0.02525 5.90954</p> <p>0.0255 5.89105</p> <p>0.02575 5.87191</p> <p>0.026 5.85159</p> <p>0.02625 5.83007</p> <p>0.0265 5.80776</p> <p>0.02675 5.78416</p> <p>0.027 5.7593</p> <p>0.02725 5.73344</p> <p>0.0275 5.70642</p> <p>0.02775 5.67803</p> <p>0.028 5.64823</p> <p>0.02825 5.61725</p> <p>0.0285 5.58477</p> <p>0.02875 5.55098</p> <p>0.029 5.52507</p> <p>0.02925 5.49861</p> <p>0.0295 5.46342</p> <p>0.02975 5.43244</p> <p>0.03 5.40902</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Microchannel steam reforming reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions
<p><strong>Microchannel steam reforming reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>It has been described a compact multiple tube steam reformer. The design consists of multiple packed tubes, of small diameter, being placed in intimate contact with a heat generating flame. The arrangement leads to improved heat transfer and therefore chemical conversion. However, the packed tube results in a significant pressure drop and the author states the process is still heat transfer limited. Therefore, a reactor design which minimizes the process side pressure drop and does not suffer from heat transfer limitation is required. It has been described a method to modify a monolithic structure into a combined heat exchanger reactor. The method describes the mechanical process to transform the structure into a structure consisting of two discrete volumes. It is proposed that the arrangement can either be used as a heat exchanger, where energy is transferred from one stream to another via conduction through the wall or it is suitable as a chemical reactor where the second set of channels allow the introduction of a heat transfer fluid. In the second case, the energy required or generated through the reaction is removed via a heat transfer fluid in the second channel. It is noted that the reaction can be a catalytic process and the catalytically active material can be coated onto the monolith passage walls to minimize pressure drop. In this arrangement, the heat transfer from the process catalyst to the dividing wall will be highly efficient, however, the uptake of the energy by the heat transfer fluid will suffer from all of the limitations of traditional heat transfer operations. In this case, the boundary layer will provide a significant resistance to heat transfer and will severely limit the rate of the process. Also, for this arrangement to successfully supply or remove heat and maintain a near isothermal longitudinal profile considerable heat transfer fluid velocities must be utilized. The high velocities will reduce the characteristic thickness of the boundary layer and ensure that a sufficient mass of heat transfer fluid is available to absorb the heat of reaction without significantly changing temperature. These requirements will lead to excessive pressure drop through the coolant channels. Therefore, a reactor design which minimizes the heat transfer fluid side pressure drop is required. The method does not teach about combining endothermic and exothermic reactions on opposing sides of dividing walls of adjacent channels as an efficient method of heat transfer.</p> <p>Streamwise distance (meters), Heat flux (watts per square meter)</p> <p>0 28082.8</p> <p>0.00025 139648</p> <p>0.0005 111616</p> <p>0.00075 93312</p> <p>0.001 81920</p> <p>0.00125 74112</p> <p>0.0015 68096</p> <p>0.00175 62976</p> <p>0.002 58752</p> <p>0.00225 55168</p> <p>0.0025 52096</p> <p>0.00275 49152</p> <p>0.003 46336</p> <p>0.00325 44032</p> <p>0.0035 41984</p> <p>0.00375 40064</p> <p>0.004 38400</p> <p>0.00425 36864</p> <p>0.0045 35328</p> <p>0.00475 33920</p> <p>0.005 32512</p> <p>0.00525 31360</p> <p>0.0055 30336</p> <p>0.00575 29184</p> <p>0.006 28288</p> <p>0.00625 27392</p> <p>0.0065 26496</p> <p>0.00675 25728</p> <p>0.007 24832</p> <p>0.00725 24192</p> <p>0.0075 23680</p> <p>0.00775 23040</p> <p>0.008 22400</p> <p>0.00825 21760</p> <p>0.0085 21376</p> <p>0.00875 21120</p> <p>0.009 20608</p> <p>0.00925 20224</p> <p>0.0095 19968</p> <p>0.00975 19456</p> <p>0.01 19072</p> <p>0.01025 18688</p> <p>0.0105 18432</p> <p>0.01075 18176</p> <p>0.011 17920</p> <p>0.01125 17792</p> <p>0.0115 17536</p> <p>0.01175 17280</p> <p>0.012 17024</p> <p>0.01225 16768</p> <p>0.0125 16640</p> <p>0.01275 16512</p> <p>0.013 16384</p> <p>0.01325 16256</p> <p>0.0135 16128</p> <p>0.01375 16000</p> <p>0.014 15872</p> <p>0.01425 15744</p> <p>0.0145 15488</p> <p>0.01475 15488</p> <p>0.015 15360</p> <p>0.01525 15104</p> <p>0.0155 15104</p> <p>0.01575 14976</p> <p>0.016 14848</p> <p>0.01625 14720</p> <p>0.0165 14720</p> <p>0.01675 14720</p> <p>0.017 14592</p> <p>0.01725 14336</p> <p>0.0175 14336</p> <p>0.01775 14464</p> <p>0.018 14336</p> <p>0.01825 14336</p> <p>0.0185 14336</p> <p>0.01875 14208</p> <p>0.019 14080</p> <p>0.01925 14080</p> <p>0.0195 14080</p> <p>0.01975 14080</p> <p>0.02 13952</p> <p>0.02025 13824</p> <p>0.0205 13824</p> <p>0.02075 13952</p> <p>0.021 13952</p> <p>0.02125 13824</p> <p>0.0215 13696</p> <p>0.02175 13568</p> <p>0.022 13568</p> <p>0.02225 13696</p> <p>0.0225 13696</p> <p>0.02275 13440</p> <p>0.023 13312</p> <p>0.02325 13440</p> <p>0.0235 13440</p> <p>0.02375 13312</p> <p>0.024 13312</p> <p>0.02425 13312</p> <p>0.0245 13312</p> <p>0.02475 13184</p> <p>0.025 13056</p> <p>0.02525 13056</p> <p>0.0255 13056</p> <p>0.02575 12800</p> <p>0.026 12672</p> <p>0.02625 12800</p> <p>0.0265 12672</p> <p>0.02675 12544</p> <p>0.027 12544</p> <p>0.02725 12288</p> <p>0.0275 12160</p> <p>0.02775 12160</p> <p>0.028 12032</p> <p>0.02825 12032</p> <p>0.0285 11904</p> <p>0.02875 11776</p> <p>0.029 11648</p> <p>0.02925 11520</p> <p>0.0295 11392</p> <p>0.02975 11008</p> <p>0.03 10624</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Experimental data set for the article entitled "Mathematical Model of Steam Reforming in the Anode Channel of a Molten Carbonate Fuel Cell"
<p>Experimental data for the article: Szablowski, L.; Dybinski, O.; Szczesniak, A.; Milewski, J. Mathematical Model of Steam Reforming in the Anode Channel of a Molten Carbonate Fuel Cell. Energies 2022, 15, 608. The experiments were performed by the first two authors.<br> These data set refer to experiments carried out on a stand used to test high-temperature fuel cells. The subject of the study was a molten carbonate fuel cell fueled with a mixture of methane and steam with steam to carbon ratio of 2.0, 2.5, 3.0 and 3.5 and at the cell operating temperature of 550°C and 650°C. Additionally, in the anode channel of the cell, there was a catalyst in the amount of 2 g. The active area of the cell was 20.25 cm<sup>2</sup>. The article that uses these research results is published in an open access journal with a CC-BY license. This research was funded by the National Science Center, Poland (Grant number 2020/39/D/ST8/02021).</p>
Data for Process Design and Energy Assessment of an Onboard Carbon Capture System with Boilers or Heat Pumps for Additional Steam Generation
<p>1. Supporting file includes main stream information used in Aspen HYSYS model, process simulations of boiler and heat pump for model construction.<br> 2. Supporting file also includes main information used in ProMAX model, process simulations of carbon capture process for model construction.</p>
Steam explosion of eucalypt sawdust for ethanol production within a biorefinery approach - Supplementary Material
<p>Supplementary Material to the manuscript entitled "Steam explosion of eucalypt sawdust for ethanol production within a biorefinery approach", which has been revised according to the reviewers' comments and submitted for publication in <em>Processes</em> MDPI (July 18, 2023).</p>
RG Ross & Sons Steam Hammer
This single column steam hammer was built in 1907, for the opening of the Clyde Port Authority (Clyde Navigation Trust) repair workshops in Renfrew. When the works closed the hammer was transferred, with other machinery, to the Scottish Maritime Museum. It is an example of a steam hammer made to Rigby's patent by the leading maker of such machines, RG Ross & Sons at their Greenhead Engine Works in Glasgow. It was used to forge replacement parts for the Clyde Navigation Trusts's fleet of dredgers and hopper barges. Steam hammes consists of a cast iron base plate and the hammer body which carries a steam piston and hammer head. It was operated by pulling on the long metal lever on the right hand side. This released steam into the piston making the hammer head move down with great force. A trained operator could vary the pressure the hammer head exerted - some chose to show off their skills by borrowing a watch, placing it under the hammer and halting the hammer head a fraction above the glass face. Source: Objaverse 1.0 / Sketchfab
Dataset for systematic mapping literature about STEAM through Challenge-Based Learning, Robotics and Physical Devices
<p>This is the public dataset for the systematic mapping literature review performed for the paper "Fostering STEAM through Challenge-Based Learning, Robotics and Physical Devices: A systematic mapping literature review".</p> <p>Related to activity O2.A1 of the RoboSTEAM European Project.</p>
List of STEAM interventions for Students with Disabilities (SWDs) from 2013-2023
<p>List of Science, Technology, Engineering, the Arts and Mathematics (STEAM) interventions for Students with Disabilities (SWDs) from Early Childhood to Tertiary Education. This list was constructed for a systematic literature review (SLR) of educational interventions and strategies for SWDs from 2013-2023. The list contains the authors, the disability or disorder addressed, the STEAM area, the research approach, participants/educational level, learning outcomes, and conclusions. </p>
VR game reviews on Steam and analysis code
<p>This dataset was collected from Steam, including user reviews for VR games and our analysis code using BERTopic model.</p>
Steam Top Sellers
<p>Dataset that take the latest 4000 games, considered as 'top sellers' in the Steam page</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>
Pianola Steam-Punk
Pianola Steam-Punk diseñada para una escena del oeste distopico Source: Objaverse 1.0 / Sketchfab
Steam locomotive
https://www.artstation.com/artwork/WoJgG Source: Objaverse 1.0 / Sketchfab
Steam Review Dataset (2017)
<p>The dataset contains over 6.4 million publicly available reviews in English from Steam Reviews portion of Steam store run by Valve. Each review is described by review text, the id of game it belongs to, review sentiment (positive or negative) and a number of users who tough review was helpful. This is essentially an extension to previously released Steam Review Dataset</p> <p>The resource is provided as a bzip2 compressed CSV file.</p> <p>Steam Reviews and Steam are owned by Valve. Authors are not affiliated with and are not endorsed by Valve / Steam</p>
user English reviews of Beat Saber on Steam
<p>user English reviews of Beat Saber on Steam</p>
FIGURE 1. E. xochipalensis. A. Habit. B. Steam detail with white leaf scars. C in Echeveria xochipalensis (Crassulaceae), a new species from Guerrero, Mexico
FIGURE 1. E. xochipalensis. A. Habit. B. Steam detail with white leaf scars. C. Leaf color variation. Photos: Luis Emilio de la Cruz.
Steam Games
<p>Dataset with Steam game usege data in CSV format. Transformed from the original Steam Data Set (https://steam.internet.byu.edu).</p> <p>Update: The Website is now archived.</p> <p>https://web.archive.org/web/20220418025750/https://steam.internet.byu.edu/</p>
Perovskite modified catalysts with improved coke resistance for steam reforming of glycerol to renewable hydrogen fuel
<p>Catalytic steam reforming of renewable<span> feedstock to renewable energy or chemicals always goes with intense coking activities that produce carbonaceous products leading to low performance and eventual catalyst deactivation. A supported</span> metal catalyst such as Ni/Al<sub>2</sub>O<sub>3</sub> is known to catalyse gasification and decomposition of biomass feedstock largely for renewable fuel production with promising results. Catalyst deactivation from high carbon deposition, agglomeration, and phase transformations resulting in rapid deactivation are some of the issues identified with the use of the catalyst. In this work, improvement on the coke resistance and catalytic properties of the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst is sought via the use of a thermally stable and coke-resistant perovskite La<sub>0.75</sub>Sr<sub>0.25</sub>Cr<sub>0.5</sub>Mn<sub>0.5</sub>O<sub>3-δ</sub> (LSCM) as catalyst promoter/modifier and involving Zirconia-doped Ceria (Ce-Zr) as alternative support in steam reforming of pure and by-product glycerol. The stabilizing influence of the LSCM on the Ni catalyst has improved stability against agents of deactivation with a significant improvement of catalytic activity of Ni/Al<sub>2</sub>O<sub>3</sub> in H<sub>2</sub> production and robust suppression of carbon deposition. Particularly, the synergy between the LSCM promoter and alternative Ce<sub>0.75</sub>Zr<sub>0.25</sub>O<sub>2</sub> support enhanced the basic and redox properties known for Ce<sub>0.75</sub>Zr<sub>0.25</sub>O<sub>2</sub> support in contrast to the weak acid centres in the γ-Al<sub>2</sub>O<sub>3</sub> support which further improved nickel stability, catalyst-support interaction with a resultant high catalytic activity, and robust coke suppression as a result of enhanced oxygen mobility. There is a correlation between the product distribution, nature of coke deposited, and reforming temperature, as well as the type of support and structural modification. Hence, the integration of a robust perovskite material as a catalyst promoter and choice of support could be tailored in the design and development of robust catalyst systems to improve the performance of supported metal catalysts particularly the suppression of carbon deposition for hydrocarbon and biomass conversion to renewable fuel or chemicals.</p>
Sample of Steam catalog
<p>A sample dataset of the Steam store games</p>
The New Steam Laundry, Belmont (Demolished)
Source: Objaverse 1.0 / Sketchfab
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.