Characterization and testing of solid particles to be used in CSP plants: Aging and fluidization tests

Díaz-Heras, M.; Calderón, Alejandro; Navarro, María Elena; Almendros-Ibáñez, J.A.; Fernández, A. Inés; Barreneche, Camila

doi:10.1016/j.solmat.2020.110793

Cited by 32 publications

(12 citation statements)

References 24 publications

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“…By comparison between untreated and aged samples, it is also observed that, for samples aged over an inner temperature range from 300 to 800 °C, the specific heat was reduced by up to 5% in the samples aged with shorter cycles ( Figure 9 ). This change is consistent with the literature findings, particularly those in Reference [ 34 ], where the specific heat of SiC and other materials was measured in order to understand the potential of each material to be used as a thermal energy storage medium in CSP plants; in that work, SiC showed a decrease in specific heat of about 8% after thermal ageing.…”

Section: Discussionsupporting

confidence: 91%

Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Cañadas¹,

Candelario

Aloysio

et al. 2021

Materials

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Porous silicon carbide is a promising material for ceramic receivers in next-generation concentrated solar power receivers. To investigate its tolerance to thermal shock, accelerated ageing of large coupons (50 × 50 × 5 mm) was conducted in a solar furnace to investigate the effects of thermal cycling up to 1000 °C, with gradients of up to 22 °C/mm. Non-destructive characterization by computed X-ray tomography and ultrasonic inspection could detect cracking from thermal stresses, and this informed the preparation of valid specimens for thermophysical characterization. The effect of thermal ageing on transient thermal properties, as a function of temperature, was investigated by using the light-flash method. The thermophysical properties were affected by increasing the severity of the ageing conditions; thermal diffusivity decreased by up to 10% and specific heat by up to 5%.

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Section: Discussionsupporting

confidence: 91%

Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Cañadas¹,

Candelario

Aloysio

et al. 2021

Materials

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“…Higher process temperatures are achievable by direct heating (Alonso and Romero, 2015;André et al, 2016;Prieto et al, 2016;Yadav and Banerjee, 2016), but axial/radial temperature gradients inside the bed may occur under operating conditions where the solar radiation is unevenly incident and highly concentrated. This has a potentially negative effect on the performance of reactive materials (Tregambi et al, 2017;Tregambi et al, 2018a;Tregambi et al, 2019d), as overheating of the bed surface brings about sintering, degradation or even ablation of the fluidized particles (Díaz-Heras et al, 2021b).…”

Section: Fluidized Bed Solar Receivers and Reactors: Basic Design And Operational Features Particle Receivers And Fluidized Bedsmentioning

confidence: 99%

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

et al. 2021

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Thermal and thermochemical processes can be efficiently developed and carried out in fluidized beds, due to the unique properties of fluidized suspensions of solid particles and to the inherent flexibility of fluidized bed design and operation. Coupling fluidization with concentrated solar power is a stimulating cross-disciplinary field of investigation, with the related issues and opportunities to explore. In this review article the current and perspective applications of fluidized beds to collection, storage and exploitation of solar radiation are surveyed. Novel and “creative” designs of fluidized bed solar receivers/reactors are reported and critically discussed. The vast field of applications of solar-driven fluidized bed processes, from energy conversion with thermal energy storage, to solids looping for thermochemical energy storage, production of fuels, chemicals and materials, is explored with an eye at past and current developments and an outlook of future perspectives.

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“…[ 8–10 ] Until now, solid particle selection and characterization have been focused on synthetic and natural raw materials. [ 11–15 ]…”

Section: Introductionmentioning

confidence: 99%

“…The use of solid particles rather than molten salts is a solution to overcome the drawbacks of molten salts at temperatures above 565 C. [8][9][10] Until now, solid particle selection and characterization have been focused on synthetic and natural raw materials. [11][12][13][14][15] The emphasis on the use of solid particles lies in the CSP reflected in a central tower, which has a receiver containing the solid particles. The receiver will store the concentrated solar light.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Solid Wastes and By‐Products as Solid Particle Materials for Concentrated Solar Power Plants

et al. 2022

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The revalorization of solid wastes and by‐products to be applied as solid particles in concentrated solar power (CSP) leads to cost savings and progresses toward more sustainable technology. Herein, the physicochemical, morphological, thermal, and solar absorption properties are evaluated for electric arc furnace dust, black slag from the steel industry, and Gossan waste from the Rio Tinto mining industry. The principal objectives of this work are (i) to carry out a thermal aging at 900 °C at different times, (ii) to assess the solid's stability throughout the evaluation of physicochemical, morphological, thermal, and optical properties of the material as received, after 300 and 500 h of thermal aging, and (iii) to determine the most appropriate candidate as a thermal energy storage medium and heat transfer fluid for the CSP concept with solid particles. The results show that electric arc furnace black slag is the most suitable candidate from the three solids studied, as it is the one that optimizes the combination of absorptance, thermal conductivity, and chemical stability after thermal aging.

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Characterization and testing of solid particles to be used in CSP plants: Aging and fluidization tests

Cited by 32 publications

References 24 publications

Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Characterization of Solar-Aged Porous Silicon Carbide for Concentrated Solar Power Receivers

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

Assessment of Solid Wastes and By‐Products as Solid Particle Materials for Concentrated Solar Power Plants

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