Influence of Temperature on Properties and Dynamics of Gas-Solid Flow in Fluidized-Particle Tubular Solar Receiver




Concentrated Solar Power, Particles Solar Receiver, Fluidized Particles


A fluidized particle single-tube solar receiver has been tested for investigating the gas-particle characteristics that enable the best operating conditions in a commercial-scale plant. The principle of the solar receiver is to fluidize the particles in a vessel – the dispenser – in which the receiver tube is plunged. The particles are flowing upward in the tube, irradiated over 1-meter height, by applying an overpressure in the dispenser. Experiments with a concentrated solar flux varying between 188 and 358 kW/m² are carried out, and the particle mass flux varied from 0 to 72 kg/(m²s). The mean particles and external tube wall temperatures in the irradiated zone are heated from the ambient to respectively 700°C and 940°C. It is shown that the temperature rise leads to a decrease of the particle volume fraction. Furthermore, a self-regulation of the system is evidenced with a short transient regime. This characteristic is essential from the operational viewpoint. The thermal efficiency of the receiver increases with the particle flow rate, reaching between 60 and 75% above 30 kg/(m²s). Several fluidization regimes are identified thanks to pressure signal analyses, like slugging, turbulent and fast fluidization, showing that regimes transitions are strongly affected by the temperature.


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W. Wu, L. Ambseck, R. Buck, R. Uhlig, R. Ritz-Paal, “Proof of concept test of a centrifugal particle receiver” Energy Procedia, 49, pp. 560–568, 2014, doi:

C. K. Ho, J. Christian, J. Yellowhair, S. Jeter, M. Golob, C. Nguyen, K. Repole, S. Abdel-Khalik, N. Siegel, H. Al-Ansary, A. El-Leathy, B. Gobereit, “Highlights of the high-temperature falling particle receiver project: 2012-2016”, AIP Conference Proceeding, 1850, 030027, 2017, doi:

G. Flamant, D. Gauthier, H. Benoit, J. L. Sans, R. Garcia, B. Boissière, R. Ansart, M. Hemati, “Dense suspension of solid particles as a new heat transfer fluid for concentrated solar thermal plants: On-sun proof of concept”, Chemical Engineering Science, 102, pp. 567–576, 2013, doi:

M. T. Dunham, B. D. Iverson, “High-efficiency thermodynamic power cycles for concentrated power systems”, Renewable and Sustainble Energy Reviews, 30, pp. 758–770, 2014, doi:

A. Le Gal, B. Grange, M. Tessonneaud, A. Perez, C. Escape, J. L. Sans, G. Flamant, “Thermal analysis of fluidized particle flows in a finned tube solar receiver”, Solar Energy, 191, pp. 19–33, 2019, doi:

R. Gueguen, G. Sahuquet, S. Mer, A. Toutant, F. Bataille, G. Flamant, “Fluidization Regimes of Dense Suspensions of Geldart Group A Fluidized Particles in a High Aspect Ratio Column”, Chemical Engineering Science, 118360, 2022, doi:¬60.

R. Gueguen, G. Sahuquet, S. Mer, A. Toutant, F. Bataille, G. Flamant, “Gas-Solid Flow in a Fluidized-Particle Tubular Solar Receiver: Off-Sun Experimental Flow Regimes Characterization”, Energies, 14, 7392, 2021, doi:

S. Y. Wu, J. Baeyens, “Effect of operating temperature on minimum fluidization velocity”, Powder Technology, 67, pp. 217–220, 1991, doi:

D. Geldart, “Types of Gas Fluidization”, Powder Technology, 7, pp. 285–292, 1973, doi:

R. Gueguen, B. Grange, F. Bataille, S. Mer, G. Flamant, “Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers”, Energies, 13, 4803, 2020, doi:

J. Van der Schaaf, J. C. Schouten, F. Johnsson, “Non-intrusive determination of bubble and slug length scales in fluidized beds by decomposition of the power spectral density of pressure time series”, International Journal of Multiphase Flow, 28, pp. 865–880, 2002, doi:

H. T. Bi, N. Ellis, I. A. Abba, J. R. Grace, “A state-of-the-art review of gas-solid turbulent fluidization”, Chemical Engineering Science, 55, pp. 4789–4825, 2000, doi:




How to Cite

Gueguen, R., Sahuquet, G., Sans, J.-L., Mer, S., Toutant, A., Bataille, F., & Flamant, G. (2024). Influence of Temperature on Properties and Dynamics of Gas-Solid Flow in Fluidized-Particle Tubular Solar Receiver. SolarPACES Conference Proceedings, 1.

Conference Proceedings Volume


Receivers and Heat Transfer Media and Transport: Point Focus Systems

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