Search Results - "STEINFELD, A"

Solar hydrogen production via a two-step water-splitting thermochemical cycle based on Zn/ZnO redox reactions by Steinfeld, A.

“…The production of hydrogen from water using solar energy via a two-step thermochemical cycle is considered. The first, endothermic step is the thermal…”
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Thermochemical Hydrogen Storage via the Reversible Reduction and Oxidation of Metal Oxides by Brinkman, L, Bulfin, B, Steinfeld, A

“…In this work, we perform a technical analysis of a cyclic reduction and oxidation process of metal oxides applied as a hydrogen storage route. Hydrogen is used…”
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Packed-bed thermal storage for concentrated solar power – Pilot-scale demonstration and industrial-scale design by Zanganeh, G., Pedretti, A., Zavattoni, S., Barbato, M., Steinfeld, A.

“…► A 6.5MWhth packed bed of rocks experimentally demonstrated for sensible heat storage. ► High-temperature air, heated by concentrated solar energy, is the…”
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Design of packed bed thermal energy storage systems for high-temperature industrial process heat by Zanganeh, G., Pedretti, A., Haselbacher, A., Steinfeld, A.

“…•A 7.2GWhth thermal energy storage is designed based on a packed bed of rocks.•Air is used as heat transfer fluid.•Initial charging significantly improves…”
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Thermodynamic comparison of solar methane reforming via catalytic and redox cycle routes by Bulfin, B., Ackermann, S., Furler, P., Steinfeld, A.

“…•Comparison of methane reforming via catalytic and redox chemical looping routes.•Phase equilibrium methodology for solid gas reactions to model a fixed bed.•A…”
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CO2 capture from atmospheric air via consecutive CaO-carbonation and CaCO3-calcination cycles in a fluidized-bed solar reactor by NIKULSHINA, V, GEBALD, C, STEINFELD, A

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Solar thermal hybrids for combustion power plant: A growing opportunity by Nathan, G.J., Jafarian, M., Dally, B.B., Saw, W.L., Ashman, P.J., Hu, E., Steinfeld, A.

“…The development of technologies to hybridise concentrating solar thermal energy (CST) and combustion technologies, is driven by the potential to provide both…”
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Oxygen nonstoichiometry, defect equilibria, and thermodynamic characterization of LaMnO3 perovskites with Ca/Sr A-site and Al B-site doping by Takacs, M., Hoes, M., Caduff, M., Cooper, T., Scheffe, J.R., Steinfeld, A.

“…This work encompasses the thermodynamic characterization of four doped lanthanum manganites, namely La0.6A0.4Mn1−yAlyO3 (A = Ca, Sr and y = 0, 0.4), all showed…”
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Experimental and numerical investigation of combined sensible–latent heat for thermal energy storage at 575°C and above by Zanganeh, G., Khanna, R., Walser, C., Pedretti, A., Haselbacher, A., Steinfeld, A.

“…•A packed bed of phase change material (PCM) and rocks is used for heat storage.•Air is used as the heat-transfer fluid.•The concept stabilizes the outflow…”
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Solar Syngas Production via H2O/CO2-Splitting Thermochemical Cycles with Zn/ZnO and FeO/Fe3O4 Redox Reactions by Stamatiou, A, Loutzenhiser, P. G, Steinfeld, A

“…The solar production of syngas from H2O and CO2 is examined via two-step thermochemical cycles based on Zn/ZnO and FeO/Fe3O4 redox reactions. The first,…”
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A 1kWe thermoelectric stack for geothermal power generation – Modeling and geometrical optimization by Suter, C., Jovanovic, Z.R., Steinfeld, A.

“…► A 1kWe thermoelectric stack is considered for geothermal heat conversion. ► It comprises an array of Bi–Te modules between counter-flow water heat…”
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Hydrogen production by steam-gasification of carbonaceous materials using concentrated solar energy – V. Reactor modeling, optimization, and scale-up by Z'Graggen, A., Steinfeld, A.

“…A chemical reactor for the steam-gasification of carbonaceous particles (e.g. coal, coke) is considered for using concentrated solar radiation as the energy…”
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Solar thermal cracking of methane in a particle-flow reactor for the co-production of hydrogen and carbon by Maag, G., Zanganeh, G., Steinfeld, A.

“…An experimental investigation on the thermal decomposition of CH 4 into C and H 2 was carried out using a 5 kW particle-flow solar chemical reactor tested in a…”
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High Redox Capacity of Al-Doped La1-xSrxMnO3-[delta] Perovskites for Splitting CO2 and H2O at Mn-Enriched Surfaces by Ezbiri, M, Becattini, V, Hoes, M, Michalsky, R, Steinfeld, A

“…Perovskites are attractive candidates for the solar-driven thermochemical redox splitting of CO2 and H2O into CO and H2 (syngas) and O2. This work investigates…”
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Solar Syngas Production from H2O and CO2 via Two-Step Thermochemical Cycles Based on Zn/ZnO and FeO/Fe3O4 Redox Reactions: Kinetic Analysis by Stamatiou, A, Loutzenhiser, P. G, Steinfeld, A

“…Syngas production via a two-step H2O/CO2-splitting thermochemical cycle based on Zn/ZnO and FeO/Fe3O4 redox reactions is considered using highly concentrated…”
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A co-located solar receiver and thermal storage concept using silicate glass at 1000°C and above: Experiments and modeling in the optically-thick regime by Casati, E., Lankhorst, A., Desideri, U., Steinfeld, A.

“…•A co-located solar receiver and thermal energy storage concept is presented.•Solar radiation is directly absorbed and stored in a volume of silicate glass.•A…”
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Kinetic analysis of the carbonation reactions for the capture of CO2 from air via the Ca(OH)2-CaCO3-CaO solar thermochemical cycle by NIKULSHINA, V, GALVEZ, M. E, STEINFELD, A

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Solar hydrogen production by thermal decomposition of natural gas using a vortex-flow reactor by Hirsch, D., Steinfeld, A.

“…The endothermic decomposition of natural gas is experimentally investigated using concentrated solar radiation as the source of high-temperature process heat…”
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A pressurized high-flux solar reactor for the efficient thermochemical gasification of carbonaceous feedstock by Müller, F., Poživil, P., van Eyk, P.J., Villarrazo, A., Haueter, P., Wieckert, C., Nathan, G.J., Steinfeld, A.

“…•3-kW solar reactor was experimentally demonstrated with concentrated radiation.•Charcoal-water slurry was converted to high-quality pressurized…”
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Hydrogen production by hydrogen sulfide splitting using concentrated solar energy – Thermodynamics and economic evaluation by Villasmil, W., Steinfeld, A.

“…Thermodynamic and economic analyses were carried out to evaluate the use of concentrated solar energy for driving the endothermic dissociation reaction H 2S →…”
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