Effects of receiver parameters on the optical efficiency of a fixed linear-focus Fresnel lens solar system with sliding adjustment

Optical Performance Comparison of Different Shapes of Cavity Receiver in the Fixed Line-Focus Solar Concentrating System

“…The proposed method carried out in this research has been validated against the experimental work in our previous works [3,4], see Figure 4. After designing an optical model and setting up the TracePro ® software, the results of both works were compared, and a good agreement was achieved.…”

“…The symmetry plane of the linear Fresnel lens and the cavity receiver inner wall form an intersection line, and ∆f represents the distance between the intersection line and the focal line. The energy flux distribution of the focus facula shows that the energy flux density in the main facula is much higher than that in the side facula [3,4]. The energy flux density of the focus facula is negatively related to the distance between the focal plane and the focal line.…”

“…According to the previous work of our team [3,4], the θ in FLSCS shown in Figure 1, is determined by the following formula:…”

“…Sustainability 2022, 13, x FOR PEER REVIEW 4 of 25 model and methodology can be extrapolated in other countries by modifying the design parameters and operating conditions. According to the previous work of our team [3,4], the θ in FLSCS shown in Figure 1, is determined by the following formula:…”

“…It is utilized to heat the HTF in the cavity receiver. Note that the FLSCS can provide a relatively high optical efficiency for a whole year running based on the lens element's simple periodic slip adjustment [3,4]. The cavity receiver is fixedly installed in the system, which causes its structural parameters to have a significant impact on the system's optical performance during the sun-tracking process of the solar concentrator.…”