Particle Flow Distribution in a Fluidized-Particles Multitube Solar Receiver
DOI:
https://doi.org/10.52825/solarpaces.v1i.717Keywords:
Concentrated Solar Power, Particles Solar Receiver, Fluidized Particles, Particle Flow Heterogeneity in Solar ReceiverAbstract
A fluidized-particles two-tube solar receiver was tested at ambient temperature at PROMES Laboratory to investigate the influence of an inhomogeneous solar flux density on the particle mass flow rate between the tubes. The principle of this 3rd generation solar receiver is to fluidize the particles in a container, called dispenser, in which the tubes’ bottom are immersed. The fluidized particles are flowing upward the tubes by applying an overpressure in the dispenser. Air velocities are changed inside the tubes, thanks to air mass flow controllers, to represent temperature heterogeneity between the tubes. Air velocities from 0.05 up to 0.52 m/s were tested, both in homogeneous and heterogeneous conditions. In the heterogeneous ones, the differences in air velocity between the tubes aim to mimic a difference in temperature from 20 to 100 % with homogeneous air flow rates injected. The following conclusions were drawn. First, the particle mass flux in the tubes are the same with homogeneous air velocities, each one following a calibration map previously obtained. Second, different air velocities lead to different particle mass flux. Third, the rise of the total particle mass flux diminishes the pressure in the dispenser. Four, this diminution of pressure leads to a decrease of the particle mass flow rate of the tube with the lower air velocity. This influence can lead in some cases to the stop of the fluidized bed circulation in the affected tube.
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Copyright (c) 2024 Guillaume Sahuquet, Ronny Gueguen, Lilian Fontalvo, Samuel Mer, Adrien Toutant, Françoise Bataille, Gilles Flamant
This work is licensed under a Creative Commons Attribution 4.0 International License.
Funding data
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National Energy Technology Laboratory
Grant numbers Award Number 34211 -
Agence Nationale de la Recherche
Grant numbers ANR-10-LABX-22-01 -
Horizon 2020
Grant numbers 727762
