Thermal performance analysis of a falling particle receiver using a zigzag particle release pattern
In order to improve the problem of high radiation loss and low thermal efficiency of the falling particle receiv-er in the solar power tower system,a zig-zag particle release pattern,which can improve the optical-thermal conversion characteristics of particle curtain of the receiver,is investigated in this paper to improve the thermal performance of the receiver.A numerical integrated model coupling Monte Carlo ray tracing method and finite volume method is firstly es-tablished for the optical-thermal coupling process in the solar power tower system;and based on this model,the thermal performance of the falling particle receiver with zigzag particle release pattern using different geometric factors(ampli-tude and wavelength)is analyzed.The results show that the zigzag particle release pattern can improve the receiver per-formance when the wavelength is 0.2 m and the amplitude is greater than 0.3 m.The optimal zigzag pattern with a wave-length of 0.2 m and an amplitude of 0.4 m improved the receiver efficiency by 0.91%compared with the conventional straight-line pattern.
NETL
NSTL
万方数据
