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Experimental investigation of migration and solidification of molten salt leaking through tank cracks
储罐裂缝渗漏熔盐迁移凝固实验研究
タンク亀裂から漏れる溶融塩の移動と凝固の実験的調査
탱크 균열을 통해 누출된 용융염의 이동 및 응고에 대한 실험적 조사
Investigación experimental de la migración y solidificación de sales fundidas que se filtran a través de grietas en tanques
Étude expérimentale de la migration et de la solidification du sel fondu s'échappant à travers les fissures du réservoir
Экспериментальное исследование миграции и затвердевания солевого расплава, просачивающегося через трещины резервуара
Hua Shi, Hao Zhou 周昊, Peng-nan Ma 马鹏楠, Jian-kang Wang, Hao Fang, Jia-wei Luo, Kun-zan Qiu 邱坤赞
State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
中国 浙江 杭州 浙江大学热能工程研究所 能源清洁利用国家重点实验室
Journal of Zhejiang University Science A, 15 December 2021
Abstract

Molten salt is often used for heat transfer and thermal energy storage in concentrated solar power. molten salt leakage and migration is a significant issue in its application. molten salt migration and solidification in thermal porous foundation materials through cracks are experimentally investigated.

The impact of factors, including crack length and width, operation temperature, and leakage mass of molten salt, are studied through an experimental device modeling the leakage of the actual molten salt storage tank. Experimental results show that the crack width and length slightly affect the migration depth, but directly affect the shape of the agglomeration of solidified salt and porous foundation material.

The most important factor affecting the migration depth of molten salt leaking through cracks is the tank operating temperature. The molten salt migration depth when the operating temperature is 500 °C is 95.8% higher than that with an operating temperature of 300 °C. As the leakage molten salt mass reached 400 g, the average migration width increased by 23.6%, but the migration depth only increased by 5.2%. It is found that the foundation material temperatures after leakage accidents increase with an increase in the mass of leaked molten salt.
Journal of Zhejiang University Science A_1
Journal of Zhejiang University Science A_2
Journal of Zhejiang University Science A_3
Journal of Zhejiang University Science A_4
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