Characterization of solar-aged porous silicon carbide for concentrated solar power receivers

Inmaculada Cañadas; Victor M. Candelario; Giulia De Aloysio; Jesús Fernández; Luca Laghi; Santiago Cuesta-López; Yang Chen; T. James Marrow; Antonio Rinaldi; Ana Mariblanca Sanchez; Angelo Tatì; Claudio Testani

doi:10.3390/ma14164627

Characterization of solar-aged porous silicon carbide for concentrated solar power receivers

Inmaculada Cañadas, Victor M. Candelario, Giulia De Aloysio, Jesús Fernández, Luca Laghi, Santiago Cuesta-López, Yang Chen, T. James Marrow, Antonio Rinaldi, Ana Mariblanca Sanchez, Angelo Tatì, Claudio Testani

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (SciVal)

Abstract

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%.

Original language	English
Article number	4627
Journal	Materials
Volume	14
Issue number	16
DOIs	https://doi.org/10.3390/ma14164627
Publication status	Published - 17 Aug 2021

Bibliographical note

Funding Information:
This project has received funding from the European Union?s Horizon 2020 Research and Innovation Programme, under grant agreement no. 721045. The Xradia 510 microscope was funded by University of Oxford experimental equipment grant from the UK Engineering and Physical Sciences Research Council (EPSRC) (EP/M020833X/1).

Keywords

Accelerated ageing
Computed tomography
Concentrated solar power plants
Non-destructive testing
Silicon carbide
Thermal conductivity
Thermal diffusivity
Ultrasonic

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.3390/ma14164627Licence: CC BY

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abstract = "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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note = "Funding Information: This project has received funding from the European Union?s Horizon 2020 Research and Innovation Programme, under grant agreement no. 721045. The Xradia 510 microscope was funded by University of Oxford experimental equipment grant from the UK Engineering and Physical Sciences Research Council (EPSRC) (EP/M020833X/1). ",

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AU - Laghi, Luca

AU - Cuesta-López, Santiago

AU - Chen, Yang

AU - James Marrow, T.

AU - Rinaldi, Antonio

AU - Sanchez, Ana Mariblanca

AU - Tatì, Angelo

AU - Testani, Claudio

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PY - 2021/8/17

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N2 - 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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Characterization of solar-aged porous silicon carbide for concentrated solar power receivers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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