Migration and phase change study of leaking molten salt in tank foundation material

Zhou, Hao; Shi, Hua; Lai, Zhenyu; Zuo, Yuhang; Hu, Shihao; Zhou, Mingxi

doi:10.1016/j.applthermaleng.2020.114968

Cited by 19 publications

(4 citation statements)

References 32 publications

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“…The seepage depth in LECA is significantly increased, which will also deepen the difficulty of dealing with the leakage accident of the storage tank. According to the research results in Zhou et al, 19 the greater the porosity of the fillers, the greater the seepage depth should be. Nevertheless, it can be seen from Table 2 that the porosity of LECA, sand, and gravel are 37.90%, 45.46%, and 42.84%, respectively, while the seepage depth of molten salt in different fillers has no apparent correlation with the porosity.…”

Section: Resultsmentioning

confidence: 95%

“…The molten salt used in the experiments is Solar Salt 22,23 supplied by Zhejiang Lianda Chemical Company Limited, China. The salt is a mixture of NaNO 3 and KNO 3 in 60:40 wt % ratio, and its properties are shown in Table 1 19 . The foundation fillers used are LECA, sand, and gravel, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…The salt is a mixture of NaNO 3 and KNO 3 in 60:40 wt % ratio, and its properties are shown in Table 1. 19 The foundation fillers used are LECA, sand, and gravel, respectively. Among them, sand and gravel have enough rigidity to keep the floor around the foundation flat but have high thermal conductivity.…”

Section: Experimental Materialsmentioning

confidence: 99%

“…It is found that lower tank foundation stiffness can reduce the maximum stress of the tank. Zhou et al 19 explored a series of influencing factors on the seepage and solidification process of molten salt in the thermal porous system after a tank leakage accident through a self‐designed experimental system. Shi et al 20 explored the migration characteristics of molten salt which leaked through the crack in thermally stable foundation materials and obtained the seepage range under different working conditions.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on seepage flow characteristics of leaked molten salt in foundation fillers in concentrating solar power plants

Zhang

Zuo

et al. 2022

Asia-Pacific J Chem Eng

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The leakage of molten salt storage tanks in concentrating solar power plants has attracted much attention. This paper focused on seepage and migration characteristics of molten salt in the thermal‐steady foundation fillers with different configurations after leakage occurs through a self‐built experimental system modeling the actual leaking process. The results show that the thermal insulation of light expanded clay aggregate (LECA) as foundation fillers is better than that of sand and gravel. When the operating temperature is 565°C, the average temperatures of each layer of LECA, sand, and gravel are 131.73°C, 141.91°C, and 149.27°C, respectively. And the seepage depths in light expanded clay aggregate, sand, and gravel are 482 mm, 223 mm, and 270 mm, respectively. It is found that the seepage depth of molten salt distinctly increases with higher operating temperature in all kinds of fillers. Nevertheless, the seepage depth of molten salt in the multi‐layer fillers diminishes with the increase of the thickness of the sand or gravel layer. The results obtained from this research would be helpful for the engineering design of storage tank foundations and reduce economic losses and the complexity of accident handling.

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Section: Resultsmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: Experimental Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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