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4 results for “heat and mass transfer”
Data generated by the model presented in the research article entitled "Simulation of mass and heat transfer in an evaporatively cooled PEM fuel cell"
<p>This repository provides all the data and scripts necessary to reproduce the line plots shown in the manuscript entitled "Simulation of mass and heat transfer in an evaporatively cooled PEM fuel cell".</p>
Experimental Investigation of the Heat Transfer between Finned Tubes and a Bubbling Fluidized Bed with Horizontal Sand Mass Flow
<p>Data repository for the paper:</p> <p>Thanheiser, S.; Haider, M.; Schwarzmayr, P. Experimental Investigation of the Heat Transfer between Finned Tubes and a Bubbling Fluidized Bed with Horizontal Sand Mass Flow. Energies 2022, 15, 1316. https://doi.org/10.3390/en15041316</p>
Design principles a heterogeneously catalyzed autothermal reactor with enhanced heat and mass transfer for hydrogen production
<p><strong>Design principles a</strong> <strong>heterogeneously catalyzed autothermal reactor with enhanced heat and mass transfer 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>Catalysis, in chemistry, is the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during the reaction. The rates of chemical reactions, that is, the velocities at which they occur, depend upon a number of factors, including the chemical nature of the reacting species and the external conditions to which they are exposed. A particular phenomenon associated with the rates of chemical reactions that is of great theoretical and practical interest is catalysis, the acceleration of chemical reactions by substances not consumed in the reactions themselves, substances known as catalysts. The study of catalysis is of interest theoretically because of what it reveals about the fundamental nature of chemical reactions; in practice, the study of catalysis is important because many industrial processes depend upon catalysts for their success. In a catalyzed reaction, the catalyst generally enters into chemical combination with the reactants but is ultimately regenerated, so the amount of catalyst remains unchanged. Since the catalyst is not consumed, each catalyst molecule may induce the transformation of many molecules of reactants. For an active catalyst, the number of molecules transformed per minute by one molecule of catalyst may be as large as several million. Where a given substance or a combination of substances undergoes two or more simultaneous reactions that yield different products, the distribution of products may be influenced by the use of a catalyst that selectively accelerates one reaction relative to the other(s). By choosing the appropriate catalyst, a particular reaction can be made to occur to the extent of practically excluding another. Many important applications of catalysis are based on selectivity of this kind.</p> <p>Streamwise distance (millimeters), Reforming channel centerline temperature (degrees kelvin)</p> <p>0 373</p> <p>0.00025 373.048742</p> <p>0.0005 373.2382942</p> <p>0.00075 373.7354626</p> <p>0.001 374.7081362</p> <p>0.00125 376.2548823</p> <p>0.0015 378.3951976</p> <p>0.00175 381.0814232</p> <p>0.002 384.2247405</p> <p>0.00225 387.7222496</p> <p>0.0025 391.465635</p> <p>0.00275 395.3617454</p> <p>0.003 399.3347598</p> <p>0.00325 403.3218552</p> <p>0.0035 407.2775391</p> <p>0.00375 411.1628179</p> <p>0.004 414.9538621</p> <p>0.00425 418.6311751</p> <p>0.0045 422.1828419</p> <p>0.00475 425.6012807</p> <p>0.005 428.8821587</p> <p>0.00525 432.025476</p> <p>0.0055 435.0312325</p> <p>0.00575 437.9015946</p> <p>0.006 440.6398117</p> <p>0.00625 443.2502165</p> <p>0.0065 445.7371415</p> <p>0.00675 448.1049195</p> <p>0.007 450.3600492</p> <p>0.00725 452.5057803</p> <p>0.0075 454.5475284</p> <p>0.00775 456.4896262</p> <p>0.008 458.3374895</p> <p>0.00825 460.0954509</p> <p>0.0085 461.7689261</p> <p>0.00875 463.3600816</p> <p>0.009 464.874333</p> <p>0.00925 466.3149298</p> <p>0.0095 467.6862047</p> <p>0.00975 468.9924902</p> <p>0.01 470.2348696</p> <p>0.01025 471.4176754</p> <p>0.0105 472.5441571</p> <p>0.01075 473.6175642</p> <p>0.011 474.6389798</p> <p>0.01125 475.6138198</p> <p>0.0115 476.5431672</p> <p>0.01175 477.4302716</p> <p>0.012 478.276216</p> <p>0.01225 479.0831669</p> <p>0.0125 479.8543736</p> <p>0.01275 480.5909193</p> <p>0.013 481.2938872</p> <p>0.01325 481.9665268</p> <p>0.0135 482.6099212</p> <p>0.01375 483.2251535</p> <p>0.014 483.8143901</p> <p>0.01425 484.377631</p> <p>0.0145 484.9170424</p> <p>0.01475 485.4347907</p> <p>0.015 485.930876</p> <p>0.01525 486.4063812</p> <p>0.0155 486.8623897</p> <p>0.01575 487.3010677</p> <p>0.016 487.721332</p> <p>0.01625 488.1264322</p> <p>0.0165 488.515285</p> <p>0.01675 488.8889736</p> <p>0.017 489.2496644</p> <p>0.01725 489.5962742</p> <p>0.0175 489.9309692</p> <p>0.01775 490.2526664</p> <p>0.018 490.5646152</p> <p>0.01825 490.8646493</p> <p>0.0185 491.1560181</p> <p>0.01875 491.4365554</p> <p>0.019 491.7073443</p> <p>0.01925 491.970551</p> <p>0.0195 492.2250926</p> <p>0.01975 492.472052</p> <p>0.02 492.7114294</p> <p>0.02025 492.9432247</p> <p>0.0205 493.1696042</p> <p>0.02075 493.3884016</p> <p>0.021 493.6017832</p> <p>0.02125 493.8086659</p> <p>0.0215 494.0101329</p> <p>0.02175 494.2072672</p> <p>0.022 494.3989857</p> <p>0.02225 494.5863716</p> <p>0.0225 494.7683417</p> <p>0.02275 494.9470624</p> <p>0.023 495.1214504</p> <p>0.02325 495.2915058</p> <p>0.0235 495.4583118</p> <p>0.02375 495.6218682</p> <p>0.024 495.7810921</p> <p>0.02425 495.9381497</p> <p>0.0245 496.0919577</p> <p>0.02475 496.2425163</p> <p>0.025 496.3898255</p> <p>0.02525 496.5360515</p> <p>0.0255 496.679028</p> <p>0.02575 496.8187551</p> <p>0.026 496.9563158</p> <p>0.02625 497.0927934</p> <p>0.0265 497.2260215</p> <p>0.02675 497.3570834</p> <p>0.027 497.4859789</p> <p>0.02725 497.6137912</p> <p>0.0275 497.7383541</p> <p>0.02775 497.8618338</p> <p>0.028 497.9831472</p> <p>0.02825 498.1033775</p> <p>0.0285 498.2203583</p> <p>0.02875 498.3362559</p> <p>0.029 498.4499873</p> <p>0.02925 498.5637186</p> <p>0.0295 498.6666184</p> <p>0.02975 498.796597</p> <p>0.03 498.88</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>
Thermally coupled monolith reactors with enhanced heat and mass transfer for hydrogen production
<p><strong>Thermally coupled monolith reactors with enhanced heat and mass transfer 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>The thermally coupled monolith reactor design comprises, in one form thereof, a monolith to which, at each end, the uppermost section of the dividing walls of alternate rows of channels has been ground or cut away. The top section of each of the created voids has been sealed with a suitable material from the end to a depth as to leave an opening in the outer wall, such that a distinct inlet or outlet is formed. A catalyst coating has been applied to the inner wall of the two sets of channels using a suitable technique, one of which is the well-known washcoat technique. Two manifolds, with suitable gaskets, are attached to open ends of the monolith. Furthermore, two addition manifolds, with suitable gaskets, are affixed to the two newly formed openings. The gasket material is chosen to afford a reasonable gas tight seal to prevent cross flow between the two channels. The catalyst coatings may need to be calcined and reduced in order to produce an active catalyst. More particularly, the design comprises, in one form, a monolith to which alternate channels have been sealed at opposing ends. A catalyst coating has been applied to the inner wall. A thin capillary like tube is passed through the inlet of the void and arranged such that it falls short of the sealed end. The opposing end is prepared in a similar manner. Process gas is passed through this tube to the far end of the monolith. The fluid exits the tube is directed back towards to inlet. As the fluid traverses the channel reaction occurs in the catalytically coated walls. Any heat which is required or generated by the process is transferred through the wall. However, even with this highly efficient transfer mechanism the gas will still absorb some heat energy and become hot. This heat energy can be conducted through the capillary inlet tube to preheat the incoming reactants. This arrangement alleviates the need for an external heat exchanger (although one can be used to provide further heating) and improvers the overall efficiency of the reactor.</p> <p>Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second)</p> <p>0 10.8203</p> <p>0.00025 10.9546</p> <p>0.0005 11.2153</p> <p>0.00075 11.4215</p> <p>0.001 11.5345</p> <p>0.00125 11.5606</p> <p>0.0015 11.5129</p> <p>0.00175 11.4049</p> <p>0.002 11.2484</p> <p>0.00225 11.0544</p> <p>0.0025 10.8331</p> <p>0.00275 10.5932</p> <p>0.003 10.3414</p> <p>0.00325 10.0835</p> <p>0.0035 9.82406</p> <p>0.00375 9.56646</p> <p>0.004 9.31349</p> <p>0.00425 9.06713</p> <p>0.0045 8.82918</p> <p>0.00475 8.60082</p> <p>0.005 8.3823</p> <p>0.00525 8.17379</p> <p>0.0055 7.97561</p> <p>0.00575 7.78777</p> <p>0.006 7.61007</p> <p>0.00625 7.44219</p> <p>0.0065 7.28392</p> <p>0.00675 7.13507</p> <p>0.007 6.99548</p> <p>0.00725 6.86493</p> <p>0.0075 6.74275</p> <p>0.00775 6.62832</p> <p>0.008 6.52152</p> <p>0.00825 6.42164</p> <p>0.0085 6.32835</p> <p>0.00875 6.24151</p> <p>0.009 6.16052</p> <p>0.00925 6.08491</p> <p>0.0095 6.01452</p> <p>0.00975 5.94897</p> <p>0.01 5.88786</p> <p>0.01025 5.83131</p> <p>0.0105 5.7787</p> <p>0.01075 5.72978</p> <p>0.011 5.68436</p> <p>0.01125 5.64228</p> <p>0.0115 5.60333</p> <p>0.01175 5.56712</p> <p>0.012 5.53346</p> <p>0.01225 5.5021</p> <p>0.0125 5.47301</p> <p>0.01275 5.44619</p> <p>0.013 5.42156</p> <p>0.01325 5.3988</p> <p>0.0135 5.37773</p> <p>0.01375 5.35853</p> <p>0.014 5.34102</p> <p>0.01425 5.32469</p> <p>0.0145 5.30957</p> <p>0.01475 5.29573</p> <p>0.015 5.28316</p> <p>0.01525 5.27177</p> <p>0.0155 5.26118</p> <p>0.01575 5.25136</p> <p>0.016 5.24246</p> <p>0.01625 5.23449</p> <p>0.0165 5.22729</p> <p>0.01675 5.22085</p> <p>0.017 5.21505</p> <p>0.01725 5.20996</p> <p>0.0175 5.20538</p> <p>0.01775 5.20125</p> <p>0.018 5.19797</p> <p>0.01825 5.195</p> <p>0.0185 5.19226</p> <p>0.01875 5.19015</p> <p>0.019 5.1885</p> <p>0.01925 5.18698</p> <p>0.0195 5.18558</p> <p>0.01975 5.18461</p> <p>0.02 5.18412</p> <p>0.02025 5.18363</p> <p>0.0205 5.18302</p> <p>0.02075 5.18277</p> <p>0.021 5.18289</p> <p>0.02125 5.1829</p> <p>0.0215 5.18274</p> <p>0.02175 5.18262</p> <p>0.022 5.18211</p> <p>0.02225 5.18139</p> <p>0.0225 5.1809</p> <p>0.02275 5.18047</p> <p>0.023 5.17976</p> <p>0.02325 5.17871</p> <p>0.0235 5.17765</p> <p>0.02375 5.17665</p> <p>0.024 5.17509</p> <p>0.02425 5.17287</p> <p>0.0245 5.17047</p> <p>0.02475 5.1679</p> <p>0.025 5.1648</p> <p>0.02525 5.16115</p> <p>0.0255 5.15706</p> <p>0.02575 5.15234</p> <p>0.026 5.14688</p> <p>0.02625 5.14071</p> <p>0.0265 5.13396</p> <p>0.02675 5.12621</p> <p>0.027 5.11737</p> <p>0.02725 5.10778</p> <p>0.0275 5.09726</p> <p>0.02775 5.08542</p> <p>0.028 5.07222</p> <p>0.02825 5.05787</p> <p>0.0285 5.04248</p> <p>0.02875 5.02603</p> <p>0.029 5.00788</p> <p>0.02925 4.98897</p> <p>0.0295 4.9649</p> <p>0.02975 4.88466</p> <p>0.03 4.81923</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>
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