Numerical heat transfer modelling of a centrifugal solar particle receiver


Hicdurmaz S., Johnson E. F. , Grobbel J., Amsbeck L., Buck R., Hoffschmidt B.

26th International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2020, Freiburg, Virtual, Germany, 28 September - 02 October 2020, vol.2445 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 2445
  • Doi Number: 10.1063/5.0086375
  • City: Freiburg, Virtual
  • Country: Germany

Abstract

© 2022 Author(s).Solar particle receivers promise higher operating temperatures compared to molten salt-based receivers. The Discrete Element Method (DEM) tool LIGGGHTS is used to simulate the particle motion in a centrifugal solar particle receiver. A separate thermal model is developed in MATLAB, which uses the particle positions calculated with the DEM simulation. Heat transfer at the particle scale is accounted for with models of particle-particle conduction, particle-fluid- particle conduction, and a newly developed short-range radiation model. Radiation between large internal surfaces of the receiver are modeled with a view factor based long-range radiation model, and concentrated incident radiation is modeled with the Monte Carlo method. A thermal simulation for a lab-scale receiver is run for a relevant set of operational parameters, with key results being the temperature distribution and thermal efficiency of the receiver.