Abstract
In this paper, numerical simulation is carried out for the beam-type fluidized bed receiver. The mixture of air and inert particles is used as heat transfer medium in the simulation. Eulerian–Lagrange method and DO radiation model are used to describe the flow and heat transfer characteristics of gas and inert particles in fluidized bed receiver. At the same time, DPM method is used to consider the effect of particles on radiation field and the interaction between particles and flow field. Tracking particle wrapping and the temperature distribution, flow and heat transfer process of particles are analyzed. The particle temperature distribution is mainly concentrated in 550–800K, and 70% of the particles participate in effective heat transfer in terms of radial particle temperature and volume distribution. When the number of high temperature particles reaches 50%, the heat absorption capacity of mixed medium is optimal. At the same time, the fitting function with particle volume fraction as independent variable is obtained.
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