Dynamic Modeling of a Solar Reactor for Zinc Oxide Thermal Dissociation and Experimental Validation Using IR Thermography

Villasmil, Willy; Meier, Anton; Steinfeld, Aldo

doi:10.1115/1.4025511

Cited by 28 publications

(6 citation statements)

References 24 publications

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“…More than 350 thermochemical cyclic metal oxides have been studied to date, and most materials can theoretically achieve 40% [4,5]. Nakamura et al [6] first proposed the iron oxide system, and the oxides of iron with different valence states will release oxygen during the conversion process, thereby having the ability to reduce water to hydrogen.…”

Section: Metal Oxide Catalystmentioning

confidence: 99%

Recent Progress on Hydrogen Production From Solar-Thermal Water Splitting

Jiang,

Cao,

Liu

et al. 2020

Preprint

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The development of renewable energy is a huge opportunity and challenge in the energy field. As the ultimate energy source, solar energy is one of the most reliable energy sources among the renewable energies. Solar water splitting for hydrogen production is one of the most promising technologies of solar energy utilization, in recent decades. As an ideal clean energy source, hydrogen has made a significant breakthrough in transportation and storage technologies and hydrogen is also of great significance for applications such as chemical synthesis and energy storage. This paper reviews the basic methods and development of hydrogen production from solar water splitting, including photovoltaic, photoelectrochemical, and photothermal methods. In view of the photothermal method-solar thermochemical hydrogen production technology, this paper analyzes the thermodynamics, summarizes its future development perspectives. Furthermore, this paper also points out some new ideas for the realization of solar-thermal water splitting for hydrogen production.

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Section: Metal Oxide Catalystmentioning

confidence: 99%

Recent Progress on Hydrogen Production From Solar-Thermal Water Splitting

Jiang,

Cao,

Liu

et al. 2020

Preprint

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“…with ray,e q  obtained from Eq. (29). The location of emission of a ray bundle within layer j is determined from:…”

Section: B Radiation Emission Inside the Mediummentioning

confidence: 99%

“…In addition, several particle-based reactors have been developed and tested. Haueter et al [25], Müller et al [26], Schunk et al [27], Schunk et al [28], and Villasmil et al [29] developed, tested, and upscaled a rotating cylindrical cavity receiver-reactor to conduct the dissociation of ZnO particles. The particles are fed into the reactor with a screw feeder and line the reactor walls by the centrifugal effect.…”

Section: Introductionmentioning

confidence: 99%

“…Von Zedtwitz & Steinfeld[45], von Zedtwitz et al[46], Z'Graggen & Steinfeld[65], and Z'Graggen & Steinfeld[66] went on to simulate heat and mass transfer in actual fluidized bed and vortex flow reactors hosting the steam gasification of carbonaceous particles. Müller et al[26], Schunk et al[67], and Villasmil et al[29] simulated transient heat transfer in the rotating cylindrical cavity receiver-reactor lined with ZnO particles described in Refs [25]-[29]…”

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confidence: 99%

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Unsteady Radiative Heat Transfer Model of a Ceria Particle Suspension Undergoing Solar Thermochemical Reduction

Bader

Gampp

Breuillé

et al. 2019

Journal of Thermophysics and Heat Transfer

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Unsteady radiative heat transfer is analyzed numerically in a directly-irradiated planeparallel medium containing a suspension of ceria particles undergoing non-stoichiometric thermal reduction. The micrometer-sized ceria particles are assumed to be homogenous, nongray, absorbing, emitting, and anisotropically scattering, while the overall medium is of nonuniform temperature and composition. The unsteady mass and energy conservation equations are solved using the finite-volume method and the Shampine-Gordon time integration scheme. Radiative transport is modeled using the energy-portioning Monte Carlo ray-tracing method with radiative properties obtained from the Mie theory. Increasing particle volume fraction and decreasing particle diameter both increase the optical thickness of the particle suspension, resulting in increasing peak temperature and non-stoichiometry at steady state.For 5 µm-dia. particles under 1000 suns irradiation, the peak temperature at steady state

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“…The efficacy of the CR5 has been demonstrated by Miller et al [12] through laboratory and on-sun testing using cobalt ferrite/zirconia mixtures as reactive materials. Ceria-based material was also tested and both CO 2 Villasmil et al [21] improved the transient model [7] with a more detailed radiative heat transfer analysis, combining the Monte-Carlo ray tracing technique and the radiosity enclosure theory.…”

Section: Introductionmentioning

confidence: 99%