Materials for the Hydrogen Economy (2007) Episode 3 pdf
Materials for the Hydrogen Economy (2007) Episode 3 pdf
... Design 62 3. 2.1 Series-Connected Tubes 63 3.2.2 Tubular Stack Design 65 3. 2 .3 Planar Stack Design 65 3. 3 Modes of Operation 66 3. 4 Alternative Materials for High-Temperature Electrolysis 69 3. 5 Advanced ... Res., 33 , 33 3 35 9 (20 03) . 99. Kobayashi, T. et al., Study on current efciency of steam electrolysis using a partial protonic conductor SrZr0.9Yb0.1O 3- δ, Solid State Ionics, 138 , 2 43 251 ... conducted in Germany in the 1980s and 1990s on advanced materials and designs 5024.indb 38 11/18/07 5:44: 53 PM42 Materials for the Hydrogen Economy shown to be reversible. They can “load level”...
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Materials for the Hydrogen Economy (2007) Episode 4 pdf
... limit.FIGURE 3. 7 Performance stability of an electrolysis stack.5024.indb 69 11/18/07 5:45 :32 PM76 Materials for the Hydrogen Economy the scale, disrupting the scale formation. In contrast to the fuel ... 5:45:55 PM74 Materials for the Hydrogen Economy 3. 5.2 hybrid SOFC–SeOC StaCkSAs mentioned earlier, the SOFC mode of operation is exothermic while the SOEC mode can be endothermic, thermal neutral, ... high-temperature materials and the focus on hydrogen technologies provide the basis for rapid progress in this area.5024.indb 76 11/18/07 5:45:45 PM70 Materials for the Hydrogen Economy FIGURE 3. 8 Temperature...
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Materials for the Hydrogen Economy (2007) Episode 12 pot
... 31 1 13. 2 Fuel Injectors 31 1 13. 2.1 Injector Body 31 2 13. 2.2 Actuator Materials 31 3 13. 3 Hydrogen Effects on Internal Engine Components 31 4 13. 3.1 Decarburization Effects 31 4 13. 3.2 Hydrogen Embrittlement ... H has the potential to alter the performance of ferroelectric ceramics, and therefore 5024.indb 31 3 11/18/07 5:55 :30 PM 31 6 Materials for the Hydrogen Economy The observation of bubbles in ... 8-95024.indb 32 4 11/18/07 5:55 :39 PM Materials Issues for Use of Hydrogen in Internal Combustion Engines 31 3 the presence of hydrogen gas. Therefore, the needle and seat material for a hydrogen fuel...
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Materials for the Hydrogen Economy (2007) Episode 1 ppsx
... 5:44:11 PMxvi Materials for the Hydrogen Economy Co–polypyrrole–carbon. However, none of these have matched the catalytic perfor-mance of Pt. The electrolyte membrane presents critical materials ... engineer in the Bellevue ofce, work-ing in mechanics and materials practice; and GT-Engineering from May 2006 to the present.5024.indb 23 11/18/07 5:44:18 PMxii Materials for the Hydrogen Economy rather ... properties. It is these properties and the current efforts in developing these materials that are described in this book. A brief introduction to the material issues for each of these areas of hydrogen...
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Materials for the Hydrogen Economy (2007) Episode 2 docx
... (wt%) Brick TypeA B CaCr2O 3 90 .3 87 .3 81.0Al2O 3 7.0 2.5 0.4MgO 0.28 0.12 17.0ZrO20.01 5.2 NASiO20 .3 0.2 0.1Fe+2 and +3 0. 23 0.28 0 .3 CaO 0.28 0. 03 0 .3 a Data from manufacturer’s ... dry-bottom gasier.5024.indb 10 11/18/07 5:44 :30 PM6 Materials for the Hydrogen Economy Fe2O 3 + 3 H2 → 2 Fe + 3 H2OIron produced by the direct reduction of iron oxide is called direct ... H2/CO ratios.20 The H-to-C mole ratios for some carbon feedstock materials are about 0.1 for wood, 1 for coal, 2 for oil, and 4 for methane.10 In general, the higher the hydrocarbon content...
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Materials for the Hydrogen Economy (2007) Episode 5 potx
... 1465–14 73, 2004.5024.indb 120 11/18/07 5:51 :36 PM106 Materials for the Hydrogen Economy denser iodine-rich lower phase that forms in the separator (see section 4 .3. 3.1). Mate-rials candidates for ... Naon-117® performance using an HI/water/I2 feed at 125ºC.5024.indb 1 13 11/18/07 5:51:11 PM110 Materials for the Hydrogen Economy TABLE 4.18 Materials Options for Section III: Hydrogen Iodide ... 110 11/18/07 5:46: 23 PM104 Materials for the Hydrogen Economy FIGURE 4.15 Zr705 coupon before and after a 120-h test in HIx at 31 0ºC.TABLE 4. 13 Corrosion Rate of Various Materials in HIx...
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Materials for the Hydrogen Economy (2007) Episode 6 doc
... 20 03, p. 45. With permission.)5024.indb 131 11/18/07 5:51:49 PM 136 Materials for the Hydrogen Economy ment facility for comparison, many smaller treatment plants operate unattended. In other ... (mol%). ANL-3d membranes contain the same hydro-gen transport metal as ANL-3b membranes, but they have an Al2O 3 matrix rather than the BaTiO 3 matrix of ANL-3b membranes; they were developed ... effects, Photosynt. Res., 86, 299, 2005.5024.indb 1 43 11/18/07 5:52: 03 PM150 Materials for the Hydrogen Economy while the lowest for these membranes, is signicantly higher than that of BCY...
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Materials for the Hydrogen Economy (2007) Episode 7 potx
... and hydrogen permeation.5024.indb 1 83 11/18/07 5: 53: 02 PM160 Materials for the Hydrogen Economy of heating in the austenite phase eld, rapidly cooling (quenching) to form martens-ite, then ... 11/18/07 5:52 :36 PM166 Materials for the Hydrogen Economy The data in gure 7.1 through gure 7 .3 indicate that steel vessels and pipelines in hydrogen economy applications (i.e., at high hydrogen ... must be understood for any new steels used for hydrogen gas pipelines.5024.indb 1 73 11/18/07 5:52:49 PM5024.indb 180 11/18/07 5:52:57 PM168 Materials for the Hydrogen Economy The effect of various...
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Materials for the Hydrogen Economy (2007) Episode 8 docx
... Alloys Comp., 33 0 /33 2, 696, 2002. 22. Gross, K.J., Sandrock, G., and Thomas, G., J. Alloys Comp., 33 0 /33 2, 691, 2002. 23. Thomas, G.J., Gross, K., and Sandrock, G., J. Alloys Comp., 33 0, 2002. ... between the host and dopant cation radii. The ionic radius for Zr4+ is 0.84 Å when the coordination number is 8; it is 0.87 Å for Sc 3+ and 1.109 for Y 3+ .11 ,31 Sc-doped zirconia, therefore, ... and molecular hydrogen. Their work employs a combination of rst-principles theoretical modeling, thermodynamic 5024.indb 199 11/18/07 5: 53: 19 PM198 Materials for the Hydrogen Economy available....
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Materials for the Hydrogen Economy (2007) Episode 9 pot
... formation on the air–air sample, on the hydrogen side of the air hydrogen sample, or on the hydrogen hydrogen sample. The oxidation behavior on the hydrogen side of the air hydrogen sample ... conductor and Ni-based materials, Journal of Solid State Chemistry, 2006, 179, 133 9– 134 4.5024.indb 224 11/18/07 5: 53: 50 PM 232 Materials for the Hydrogen Economy and therefore increases electrical ... design.5024.indb 230 11/18/07 5: 53: 57 PM 238 Materials for the Hydrogen Economy Hydrogen permeation tests on ferritic stainless steels indicated that hydrogen can diffuse through the alloys, though the permeation...
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