Experimental and numerical study on the preheating process of a lab-scale solar molten salt receiver

Yawei Li, Hao Zhou, Yuhang Zuo and Mingrui Zhang

Renewable Energy, 2022, vol. 182, issue C, 602-614

Abstract: The preheating process of the solar receiver in the Concentrated Solar Power (CSP) plant is necessary but dangerous before filling the molten salt, because the empty pipe is easy to overheat, but it is required to heat up quickly to match the preheating requirement. In this paper, a lab-scale receiver was used to study the preheating process, and a transient numerical model was also developed for a better understanding of the preheating process. A detailed description of the receiver's performance on the 20% xenon lamp power was conducted, and the numerical modeling was verified through the comparison with the experimental results. The preheating process of the receiver under different xenon lamp power was performed, and a non-linear relationship existed between the period of the preheating process and the different xenon lamp power. Moreover, this paper also reported that the negative feedback control was used to realize the dynamical preheating process, and the method worked according to the surface temperature of the receiver until the preheating requirement was reached. Finally, the effect of environmental temperature on the preheating process was conducted, and the preheating duration of the receiver with the same heat flux was prolonged by about 30 s with the environment temperature of −2 °C.

Keywords: Lab-scale solar receiver; Preheating process; Thermal performance; Xenon lamps (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:182:y:2022:i:c:p:602-614

DOI: 10.1016/j.renene.2021.10.051

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