Based on a concentrated solar power （CSP） molten salt thermal energy storage project, this study takes the foundation of the hot molten salt tank as the research object. Two temperature field models are established for the molten salt tank foundation, corresponding to forced ventilation and natural ventilation, respectively. Taking wind speed, ambient temperature, altitude, ventilation duct diameter and insulation layer thickness as key factors, the variation trend of the maximum soil surface temperature under the tank foundation with these factors is analyzed. Under both forced and natural ventilation modes, ambient temperature and altitude exert similar effects on the foundation soil temperature: the maximum soil surface temperature at the bottom of the molten salt tank foundation rises with increasing ambient temperature and altitude. In the forced ventilation mode, the enhanced forced convective heat transfer leads to a significant reduction in the foundation soil temperature. Under the highest ambient temperature condition, the soil surface temperature of the tank foundation can barely meet the design requirements in the natural ventilation mode. For natural ventilation, increasing the insulation layer thickness and ventilation duct diameter is the primary measure to lower the soil surface temperature.
Key words
concentrated solar power /
molten salt tank /
ventilation duct /
forced ventilation /
natural ventilation
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References
[1] 左芳菲, 韩伟, 姚明宇. 熔盐储能在新型电力系统中应用现状与发展趋势[J]. 热力发电, 2023, 52(2): 1-9.
ZUO F F, HAN W, YAO M Y.Application status and development trend of molten salt energy storage in novel power systems[J]. Thermal power generation, 2023, 52(2): 1-9.
[2] 房彦山, 苏亮, 苏钊. 光热电站熔盐储热罐地下通风系统的数值仿真[J]. 宁夏电力, 2020(2): 58-63.
FANG Y S, SU L, SU Z.Numerical simulation of underground ventilation system of molten salt storage tank in photo-thermal power station[J]. Ningxia electric power, 2020(2): 58-63.
[3] 程虎, 苏加, 奚正稳, 等. 熔盐储罐隔热基础设计研究[J]. 工程建设与设计, 2020(7): 167-169, 172.
CHENG H, SU J, XI Z W, et al.Study on thermal insulation foundation of molten salt tank[J]. Construction & design for engineering, 2020(7): 167-169, 172.
[4] 田强, 王建平, 卜亚军. 基于热分析的高温熔盐储罐基础研究[J]. 武汉大学学报(工学版), 2017, 50(增刊1): 282-284.
TIAN Q, WANG J P, BU Y J.Study of foundation for high temperature molten salt tankbased on thermal analysis[J]. Engineering Journal of Wuhan University, 2017, 50(S1): 282-284.
[5] 梁甜, 糜又晚, 李清元, 等. 多场耦合作用下某槽式光热电站熔盐储罐基础温度分布与沉降变形[J]. 建筑技术开发, 2022, 49(5): 120-126.
LIANG T, MI Y W, LI Q Y, et al.Temperature distribution and settlement deformation of molten salt storage tank foundation of a trough type optical thermal power station under multi field coupling[J]. Building technology development, 2022, 49(5): 120-126.
[6] 易自砚, 李红星, 何邵华, 等. 高温熔盐储罐基础中陶粒的材料性能试验研究[J]. 太阳能学报, 2024, 45(7): 584-589.
YI Z Y, LI H X, HE S H, et al.Study on material properties of ceramsite in foundation of high temperature molten salt storage tank[J]. Acta energiae solaris sinica, 2024, 45(7): 584-589.
[7] 行明旭. 大型高温储罐基础隔热层的设计[J]. 化工技术与开发, 2022, 51(8): 95-98.
XING M X.Design of foundation insulation layer of large high temperature storage tank[J]. Technology & development of chemical industry, 2022, 51(8): 95-98.
[8] 顾清之. 熔盐储罐基础自然对流散热分析[J]. 上海电气技术, 2020, 13(2): 42-45.
GU Q Z.Analysis of natural convection heat dissipation of molten salt storage tank foundation[J]. Journal of Shanghai electric technology, 2020, 13(2): 42-45.
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