N to be able to maximize the wall-to-bed heat transfer and hence the receiver efficiency.

N to be able to maximize the wall-to-bed heat transfer and hence the receiver efficiency. Nonetheless, the particle temperature can affect the behaviour in the fluidized suspension. Actually, a rise in the temperature leads each to a lower in the minimum fluidization velocity Um f and to an extension of the bubbling domain. Therefore, the transitions between the fluidization regimes will probably be substantially modified with the operation temperature. Function in progress will address the examination from the temperature impact on fluidization regimes and connected heat transfer using a single tube solar receiver.Author Contributions: Conceptualization, supervision, and resources, G.F.; methodology, application and investigation, R.G.; validation and formal evaluation, S.M., A.T., F.B. and G.F.; information curation, G.S.; writing–original draft preparation, R.G. and G.S.; writing–review and editing, S.M., A.T., F.B. and G.F.; funding acquisition, G.F. All authors have study and agreed to the published version on the manuscript. Funding: This operate was funded by the French “Investments for the future” (“Investissements d’Avenir”) programme managed by the National Agency for Platensimycin Formula Analysis (ANR) beneath contract ANR-10LABX-22-01 (labex SOLSTICE). Extra funding was awarded by the European Union’s Horizon 2020 research and innovation system beneath Grant Agreement 727762, Next-CSP project. Further funding was obtained by the Occitanie French area for the cold mock-up installation. Institutional Critique Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: The information presented within this study are readily available on request in the corresponding author. Acknowledgments: The characterization with the olivine sample was carried out with the aid in the Material Characterization Platform–Surfaces and Interfaces Analyses of the PROMES (CNRS) laboratory. Conflicts of Interest: The authors declare no conflict of interest.NomenclatureAr CD dSV dV dX Dt Archimedes number (-) Friction coefficient (-) Sauter diameter from the olivine sample Volume diameter on the olivine sample Diameter corresponding for the X worth around the cumulated particle size Leptomycin B custom synthesis distribution Internal diameter of the glass tube (m)Energies 2021, 14,23 off acq Fi g Gp Hbed Ht IOP0i . mp M Nacq Ptot Pi . q ae . qf Ri,i1 . Sdisp St Uae Uair Uf Us Us,th Uslip Uv Umb Um f Uk Up Ut i h p 2 0i h Pacc Pf r Pi Pp air p ( Pi) 0i iiAcquisition frequency (Hz) Fourier transform from the Pi (t) signal Typical acceleration on account of gravity (m/s2) Particle mass flux (kg/m2 s) Height on the suspension inside the tube (m) Height of your glass tube (m) Incoherent a part of the ith stress signal Particle mass flow price (kg/h) Variety of groups of N points every applied in the PSD calculation Number of points recorded in an acquisition Total relative stress of your dispenser (mbar) Relative pressure inside the tube at the amount of a pressure probe (mbar) Aeration air flow price in the tube (sm3 /h) Fluidization air flow price by means of the dispenser (sm3 /h) Cross-correlation function amongst the Pi and Pi1 stress signals Section on the dispenser (m2) Section of the tube (m2) . Superficial aeration air velocity inside the tube, as a consequence of q ae (m/s) Superficial total air velocity in the tube, Uae U f (m/s) . Superficial air velocity in the dispenser, because of q f (m/s) Upward slug velocity (m/s) Upward slug velocity, calculated with all the two-phases theory (m/s) Slip velocity involving the air plus the particles (m/s).