Lanzhou University of Technology Institutional Repository (LUT_IR)
Dynamic characteristics of solid packed-bed thermocline tank using molten-salt as a heat transfer fluid | |
ELSihy, ELSaeed Saad1; Liao, Zhirong1; Xu, Chao1; Du, Xiaoze1,2 | |
2021-02 | |
发表期刊 | International Journal of Heat and Mass Transfer |
ISSN | 00179310 |
卷号 | 165 |
摘要 | Thermocline characteristics and the discharge performance of a molten-salt packed-bed energy storage system are analyzed numerically. For this purpose, a transient two-dimensional model based on local non-equilibrium thermal theory in a porous medium is developed. Three different solid fillers are utilized, including that of quartzite rock, slag pebbles, and alumina ceramics. Molten-salt serves as a heat transfer fluid (HTF). The effects of fluid inlet flow rate and the particle size diameter on the thermocline thickness through temperature profiles of packed-bed systems have been investigated. The discharging power is discussed in a detailed description of various operating conditions through the discharge outlet temperature stability period. The results obtained are compared with that of the pure molten-salt tank. It is revealed that the thermocline thickness of the molten-salt packed-bed tank is higher than that of pure molten-salt tank, while the latter is better in thermal stratification. As the inlet flow rate increases, both the discharging power and thermocline thickness increase. The results also indicated that decreasing particle size diameter, results in a decrease in thermocline thickness, and the discharging performance becomes more stable. Slag pebbles as a filler material is more effective than quartzite rock in thermal energy storage (TES). The results can be beneficial for the design and optimization of the packed-bed thermocline tank. © 2020 |
关键词 | Alumina Aluminum oxide Fillers Fused salts Heat storage Inlet flow Metamorphic rocks Packed beds Particle size Porous materials Slags Stream flow Tanks (containers)Design and optimization Discharge performance Dynamic characteristics Energy storage systems Operating condition Outlet temperature Temperature profiles Two dimensional model |
DOI | 10.1016/j.ijheatmasstransfer.2020.120677 |
收录类别 | EI ; SCIE |
语种 | 英语 |
WOS研究方向 | Thermodynamics ; Engineering ; Mechanics |
WOS类目 | Thermodynamics ; Engineering, Mechanical ; Mechanics |
WOS记录号 | WOS:000596069900055 |
出版者 | Elsevier Ltd |
EI入藏号 | 20204609491220 |
EI主题词 | Heat transfer |
EI分类号 | 619.2 Tanks - 631.1 Fluid Flow, General - 641.2 Heat Transfer - 802.1 Chemical Plants and Equipment - 804.2 Inorganic Compounds - 951 Materials Science |
来源库 | Compendex |
分类代码 | 619.2 Tanks - 631.1 Fluid Flow, General - 641.2 Heat Transfer - 802.1 Chemical Plants and Equipment - 804.2 Inorganic Compounds - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/132321 |
专题 | 兰州理工大学 |
通讯作者 | Du, Xiaoze |
作者单位 | 1.North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China; 2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China |
通讯作者单位 | 能源与动力工程学院 |
推荐引用方式 GB/T 7714 | ELSihy, ELSaeed Saad,Liao, Zhirong,Xu, Chao,et al. Dynamic characteristics of solid packed-bed thermocline tank using molten-salt as a heat transfer fluid[J]. International Journal of Heat and Mass Transfer,2021,165. |
APA | ELSihy, ELSaeed Saad,Liao, Zhirong,Xu, Chao,&Du, Xiaoze.(2021).Dynamic characteristics of solid packed-bed thermocline tank using molten-salt as a heat transfer fluid.International Journal of Heat and Mass Transfer,165. |
MLA | ELSihy, ELSaeed Saad,et al."Dynamic characteristics of solid packed-bed thermocline tank using molten-salt as a heat transfer fluid".International Journal of Heat and Mass Transfer 165(2021). |
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