In order to improve thermal efficiency of the solar cavity particle receiver

this paper designs the quartz spiral tube solar cavity particle receiver with quartz spiral tube

and establishes flow model to conduct comparative analysis on the structural parameters of the receiver. Finally

the cone angle of the cavity is set to 5°

the number of spiral turns is set to 5

and quartz window is adopted. In order to analyze the heat transfer characteristics of this receiver

this paper studied the influence of different incident radiation intensities and particle mass flow on it. The results show that

within the range of incident radiation intensity of 100 000 W/m~2 to 350 000 W/m~2 and particle mass flow of 0.002 kg/s to 0.051 kg/s

the highest particle temperature at the outlet is 672 ℃

and the highest efficiency of the receiver is 70.12%. The research has reference significance for the design of high-temperature solar particle receivers.