MEASUREMENT METHOD OF SURFACE ENERGY FLUX DISTRIBUTION ON TOWER-TYPE SOLAR RECEIVER BASED ON REAL SPOT SHOOTING OF CCD CAMERA

Tong Tongtong; Mi Xiaoling; Xue Gangqiang; Yang Dutang; Li Xiaobo

doi:10.19912/j.0254-0096.tynxb.2024-1895

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (2) : 220-225. DOI: 10.19912/j.0254-0096.tynxb.2024-1895

MEASUREMENT METHOD OF SURFACE ENERGY FLUX DISTRIBUTION ON TOWER-TYPE SOLAR RECEIVER BASED ON REAL SPOT SHOOTING OF CCD CAMERA

Tong Tongtong, Mi Xiaoling, Xue Gangqiang, Yang Dutang, Li Xiaobo

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Abstract

A method for measuring the concentrated spot flux distribution on the receiver in a solar power tower plant is proposed. The spot samples of some heliostats on the diffuse reflection target are photographed by the CCD cameras, and the flux distribution of the spots on the receiver surface reflected from the heliostats in the whole solar field is mapped, so as to realize the measurement of the flux distribution of the concentrated spot on the receiver. The method combines the advantages of indirect measurement method and numerical simulation. The principle of the method is introduced in detail, and the test is carried out in a 50 MW solar power tower plant in Qinghai Province, which verifies the feasibility of the method. The experimental results indicate that the method can locate the area where the flux of the concentrated spot deviates. A typical measured concentrated spot is compared with the design value. 80% of the receiver panels have an average flux density deviation less than 5%, and most of the panels with large deviations are on the south side. The maximum average deviation is 12.9%, and the maximum peak deviation is 18.9%. The energy spill loss is expected to reduce about 1% after adjusting the heliostats that produces deviation.

Key words

concentrated solar power / measurement / CCD camera / heat receiver / flux distribution / combined light spot

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Tong Tongtong, Mi Xiaoling, Xue Gangqiang, Yang Dutang, Li Xiaobo. MEASUREMENT METHOD OF SURFACE ENERGY FLUX DISTRIBUTION ON TOWER-TYPE SOLAR RECEIVER BASED ON REAL SPOT SHOOTING OF CCD CAMERA[J]. Acta Energiae Solaris Sinica. 2026, 47(2): 220-225 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1895

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