Numerical analysis of radiation propagation in innovative volumetric receivers based on selective laser melting techniques

Alberti, Fabrizio; Santiago, Sergio; Roccabruna, Mattia; Luque, Salvador; González-Aguilar, José; Crema, Luigi; Romero, Manuel

doi:10.1063/1.4949053

Cited by 11 publications

(2 citation statements)

References 8 publications

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“…Some other authors have proposed packed bed configurations [19]. A hierarchical volumetric receiver (HVR) [20] was proposed to improve the performances of a structured VR by enhancing the volumetric effect [14].…”

Section: Receivermentioning

confidence: 99%

Analysis of Radiation Propagation inside a Hierarchical Solar Volumetric Absorber

Pratticò

Bartali

Crema

et al. 2020

The First World Energies Forum—Current and Future Energy Issues

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The solar receiver is a critical component of concentrated solar power technology; it works as a heat exchanger, transforming the concentrated solar radiation into high-temperature heat. Volumetric receiver technologies, using air as a heat transfer fluid, are designed to reach higher temperatures than the current receiver technology, which is limited by material resistance and fluid instability. The higher temperature, up to 1200 K, could be used in high-temperature industrial processes or a high-temperature thermodynamic cycle. A correct radiation propagation is essential to develop their performances, reducing reflection and emission losses and promote the heat transfer to the fluid. In this study, the optical behaviour of a hierarchical volumetric receiver (HVR) developed in Bruno Kessler Foundation (FBK) has been studied using Monte Carlo ray tracing (MCRT) simulations. The simulations have been validated in an experimental setup that evaluates the light transmissivity of the HVR porous structure. Two different HVR structures are evaluated with MCRT simulations that use a real solar dish geometry to configure a complete concentrated solar power (CSP) plant. Results show that frontal and rear losses are, respectively, 12% and 3% of the incoming concentrated radiation. Inside the HVR, 15% of the incoming power is propagated trough the lateral void spaces. Therefore, the power spreading avoids the overconcentration of the centre of the focalized area. The HVR optical behaviour has been investigated, showing an optical efficiency of 85%.

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Section: Receivermentioning

confidence: 99%

Analysis of Radiation Propagation inside a Hierarchical Solar Volumetric Absorber

Pratticò

Bartali

Crema

et al. 2020

The First World Energies Forum—Current and Future Energy Issues

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show abstract

“…Ávila-Marín et al (2014Ávila-Marín et al ( , 2018 conducted experiments on metal wire mesh absorbers with varying porosities, whereas Pabst et al (2017) studied absorbers made of thin, stacked metal sheets. The honeycomb absorber 1 designs by Alberti et al (2016) and Capuano et al (2017) were made possible through additive manufacturing techniques. Alberti's hierarchical absorber was manufactured with the selective laser melting method, while electron beam melting was used to create an upscaled (3:1) version of the pin design by Capuano.…”

Section: Introductionmentioning

confidence: 99%

A new partitioned 1D LTNE continuum model for the simulation of 3D-shaped honeycomb absorbers

Broeske¹,

Schwarzbözl

Hoffschmidt

2022

Solar Energy

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Open Volumetric Air Receiver: Current Status, Challenges and Innovative Solutions

Singh¹,

Luque²,

González-Aguilar³

et al. 2020

Encyclopedia of Renewable and Sustainable Materials

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Numerical analysis of radiation propagation in innovative volumetric receivers based on selective laser melting techniques

Cited by 11 publications

References 8 publications

Analysis of Radiation Propagation inside a Hierarchical Solar Volumetric Absorber

Analysis of Radiation Propagation inside a Hierarchical Solar Volumetric Absorber

A new partitioned 1D LTNE continuum model for the simulation of 3D-shaped honeycomb absorbers

Open Volumetric Air Receiver: Current Status, Challenges and Innovative Solutions

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