Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization

The fluidized particle-in-tube solar receiver concept is promoted as an attractive solution for heating particles at high temperature in the context of the next generation of solar power tower. Similar to most existing central solar receivers, the irradiated part of the system, the absorber, is comp...

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Autores principales:	Ronny Gueguen, Guillaume Sahuquet, Samuel Mer, Adrien Toutant, Françoise Bataille, Gilles Flamant
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	fluidization regimes dense particle suspension particle-in-tube solar receivers hydrodynamics of gas-solid flow upward circulation pressure signal processing Technology T
Acceso en línea:	https://doaj.org/article/2ca38902a4c44966b6522fbb06acfccf
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spelling	oai:doaj.org-article:2ca38902a4c44966b6522fbb06acfccf2021-11-11T16:06:48ZGas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization10.3390/en142173921996-1073https://doaj.org/article/2ca38902a4c44966b6522fbb06acfccf2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7392https://doaj.org/toc/1996-1073The fluidized particle-in-tube solar receiver concept is promoted as an attractive solution for heating particles at high temperature in the context of the next generation of solar power tower. Similar to most existing central solar receivers, the irradiated part of the system, the absorber, is composed of tubes in which circulate the fluidized particles. In this concept, the bottom tip of the tubes is immersed in a fluidized bed generated in a vessel named the dispenser. A secondary air injection, called aeration, is added at the bottom of the tube to stabilize the flow. Contrary to risers, the particle mass flow rate is controlled by a combination of the overpressure in the dispenser and the aeration air velocity in the tube. This is an originality of the system that justifies a specific study of the fluidization regimes in a wide range of operating parameters. Moreover, due to the high value of the aspect ratio, the particle flow structure varies along the tube. Experiments were conducted with Geldart Group A particles at ambient temperature with a 0.045 m internal diameter and 3 m long tube. Various temporal pressure signal processing methods, applied in the case of classical risers, are applied. Over a short acquisition time, a cross-reference of the results is necessary to identify and characterize the fluidization regimes. Bubbling, slugging, turbulent and fast fluidization regimes are encountered and the two operation modes, without and with particle circulation, are compared.Ronny GueguenGuillaume SahuquetSamuel MerAdrien ToutantFrançoise BatailleGilles FlamantMDPI AGarticlefluidization regimesdense particle suspensionparticle-in-tube solar receivershydrodynamics of gas-solid flowupward circulationpressure signal processingTechnologyTENEnergies, Vol 14, Iss 7392, p 7392 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fluidization regimes dense particle suspension particle-in-tube solar receivers hydrodynamics of gas-solid flow upward circulation pressure signal processing Technology T
spellingShingle	fluidization regimes dense particle suspension particle-in-tube solar receivers hydrodynamics of gas-solid flow upward circulation pressure signal processing Technology T Ronny Gueguen Guillaume Sahuquet Samuel Mer Adrien Toutant Françoise Bataille Gilles Flamant Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization
description	The fluidized particle-in-tube solar receiver concept is promoted as an attractive solution for heating particles at high temperature in the context of the next generation of solar power tower. Similar to most existing central solar receivers, the irradiated part of the system, the absorber, is composed of tubes in which circulate the fluidized particles. In this concept, the bottom tip of the tubes is immersed in a fluidized bed generated in a vessel named the dispenser. A secondary air injection, called aeration, is added at the bottom of the tube to stabilize the flow. Contrary to risers, the particle mass flow rate is controlled by a combination of the overpressure in the dispenser and the aeration air velocity in the tube. This is an originality of the system that justifies a specific study of the fluidization regimes in a wide range of operating parameters. Moreover, due to the high value of the aspect ratio, the particle flow structure varies along the tube. Experiments were conducted with Geldart Group A particles at ambient temperature with a 0.045 m internal diameter and 3 m long tube. Various temporal pressure signal processing methods, applied in the case of classical risers, are applied. Over a short acquisition time, a cross-reference of the results is necessary to identify and characterize the fluidization regimes. Bubbling, slugging, turbulent and fast fluidization regimes are encountered and the two operation modes, without and with particle circulation, are compared.
format	article
author	Ronny Gueguen Guillaume Sahuquet Samuel Mer Adrien Toutant Françoise Bataille Gilles Flamant
author_facet	Ronny Gueguen Guillaume Sahuquet Samuel Mer Adrien Toutant Françoise Bataille Gilles Flamant
author_sort	Ronny Gueguen
title	Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization
title_short	Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization
title_full	Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization
title_fullStr	Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization
title_full_unstemmed	Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization
title_sort	gas-solid flow in a fluidized-particle tubular solar receiver: off-sun experimental flow regimes characterization
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2ca38902a4c44966b6522fbb06acfccf
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Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization

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