Thermal performance of lab-scale solar reactor designed for kinetics analysis at high radiation fluxes

Bellan, Selvan; Alonso, Elisa; Gomez-Garcia, Fabrisio; Pérez-Rábago, Carlos; González-Aguilar, José; Romero, Manuel

doi:10.1016/j.ces.2013.06.033

Cited by 28 publications

(16 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A good agreement between experimental and numerical results was found and previously published [14,32].…”

Section: Pattern Flow Determination and Thermal Behaviorsupporting

confidence: 85%

“…In addition, it was previously published a thermo-fluid dynamic simulation of the solar reactor [14], which results are in good agreement with a pattern flow close to a PFR. In such a work, it was found a uniform gas flow crossing the cavity, without any recirculation.…”

Section: Pattern Flow Determination and Thermal Behaviorsupporting

confidence: 83%

“…These results confirm that fluid dynamics of the reactor is adequate to monitor the chemical reactions by means of the oxygen concentration at the reactor outlet. In addition, it was previously published a thermo-fluid dynamic simulation of the solar reactor [14], which results are in good agreement with a pattern flow close to a PFR. In such a work, it was found a uniform gas flow crossing the cavity, without any recirculation.…”

Section: Pattern Flow Determination and Thermal Behaviorsupporting

confidence: 67%

“…However, the conditions to supply heat to the reactants in this conventional analysis are substantially different from the concentrated solardriven process that might give rise to observe different kinetics [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…The traditional approach to obtain the chemical kinetics of metal oxide reductions is to use conventional thermal analysis techniques, such as thermogravimetric analysis or thermal desorption [10][11][12][13]. However, the conditions to supply heat to the reactants in this conventional analysis are substantially different from the concentrated solar-driven process that might give rise to observe different kinetics [14,15]. Also, some devices and set-ups have been used for determining kinetics at high radiation fluxes of volatile [16] and non-volatile metal oxides [17,18].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A directly irradiated solar reactor for kinetic analysis of non-volatile metal oxides reductions

Alonso

Romero

2015

Int. J. Energy Res.

Self Cite

View full text Add to dashboard Cite

SUMMARYA directly irradiated solar reactor was designed and built to develop kinetic analysis of metal oxides reductions present in many high-temperature thermochemical processes. The reactions were monitored by measuring the oxygen concentration in a carrier gas stream. The pattern flow in the reactor cavity was determined by applying the dispersion law. The dimensionless group D/uL was calculated for flows of 9, 12, and 15 Nl/min, and room and operation temperature. It was found to be close to an ideal plug flow behavior in every case. The solar reactor was also thermally characterized, which involved the operation temperature measurement and the thermal efficiency obtaining. For an incoming power of 530 W, temperatures higher than 1400°C were measured at the middle of the cavity (where the sample should be placed), and thermal efficiency of 41.6% was calculated. Then, a methodology for kinetic analysis was proposed and applied to a case study. It consisted of a combination of experimental results and a numerical model that reproduced the reactant sample performance. Kinetic was obtained for the layer of reactive particles that were directly heated by concentrated radiation. Kinetic data were fitted to diffusion-controlled mechanism, and obtained kinetic parameters were E a = 362 kJ/mol and A = 1.39•10 9 /s.

show abstract

“…A good agreement between experimental and numerical results was found and previously published [14,32].…”

Section: Pattern Flow Determination and Thermal Behaviorsupporting

confidence: 85%

Section: Pattern Flow Determination and Thermal Behaviorsupporting

confidence: 83%

Section: Pattern Flow Determination and Thermal Behaviorsupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A directly irradiated solar reactor for kinetic analysis of non-volatile metal oxides reductions

Alonso

Romero

2015

Int. J. Energy Res.

Self Cite

View full text Add to dashboard Cite

show abstract

Brief Introduction to Solar Energy Utilization

Boehm

2015

Handbook of Clean Energy Systems

View full text Add to dashboard Cite

A brief outline of the application of solar energy is given in this article. Some characteristics of the terrestrial solar flux are described, including a series of maps that show the long‐term values of yearly solar flux. In addition, short descriptions of the various applications used today are given. The article ends with some possible directions that solar research will take in the next few years.

show abstract

Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for syngas production

et al. 2017

View full text Add to dashboard Cite

Thermal performance of lab-scale solar reactor designed for kinetics analysis at high radiation fluxes

Cited by 28 publications

References 16 publications

A directly irradiated solar reactor for kinetic analysis of non-volatile metal oxides reductions

A directly irradiated solar reactor for kinetic analysis of non-volatile metal oxides reductions

Brief Introduction to Solar Energy Utilization

Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for syngas production

Contact Info

Product

Resources

About