Experimental performance of gas-solid countercurrent fluidized bed particle solar receiver with high-density suspension

doi:10.1016/j.applthermaleng.2022.118661

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	Experimental performance of gas-solid countercurrent fluidized bed particle solar receiver with high-density suspension
	Jiang, Kaijun 1; Kong, Yanqiang 1; Xu, Chao 1; Ge, Zhihua 1; Du, Xiaoze 2
刊名	Applied Thermal Engineering
	2022-08-01
卷号	213
关键词	Bubble formation Concentration (process) Gases Heat flux Heat transfer Solar energy Solar power plants Suspensions (fluids) Two phase flow A-particles Bed particles Concentrated solar power Counter current Counter-current flow Countercurrent fluidized bed Gas-solid Gas-solids two phase flow Gas/solid two-phase flows Solid holdup
ISSN号	1359-4311
DOI	10.1016/j.applthermaleng.2022.118661
英文摘要	The particle-based concentrated solar power plant has attracted more attention since its higher working temperature. A particle solar receiver based on the gas-solid countercurrent fluidized bed was proposed to realize the high-density suspension and high outlet temperature of particles. To demonstrate the feasibility of this concept, a lab-scale single tube prototype was established and an electromagnetic heating furnace with an electric power of 10–40 kWel was selected to provide heating power. Based on a series of experimental testing, the results revealed that the countercurrent fluidized bed receiver could operate stably in the fluidized state as gas-solid countercurrent flow with bubbling and the average solids holdup of ∼40% was achieved, resulting in a particle temperature increase ranging between 101 and 312 °C. The global wall-to-bed heat transfer coefficient with a range of 311 to 1481 W/(m2·K) was obtained by the experimental data. The effects of the input heat flux fluctuation on the countercurrent fluidized bed particle solar receiver were studied to reveal its operating characteristics. These results demonstrated that the receiver may combine the merits of the up bubbling fluidized bed and the Downer, which are long residence time, high solids holdup, lower solids back mixing, avoid slugs and excellent heat transfer. The suspension operating in the fluidized state of countercurrent flow with bubbling has the potential to open a new domain of gas-solids two-phase flow. The novel concept appears to provide a potential technique to applicate in concentrated solar power generation. © 2022
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000806632000009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158409]
专题	兰州理工大学
作者单位	1.Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University), Ministry of Education, Beijing; 102206, China; 2.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Jiang, Kaijun,Kong, Yanqiang,Xu, Chao,et al. Experimental performance of gas-solid countercurrent fluidized bed particle solar receiver with high-density suspension[J]. Applied Thermal Engineering,2022,213.
APA	Jiang, Kaijun,Kong, Yanqiang,Xu, Chao,Ge, Zhihua,&Du, Xiaoze.(2022).Experimental performance of gas-solid countercurrent fluidized bed particle solar receiver with high-density suspension.Applied Thermal Engineering,213.
MLA	Jiang, Kaijun,et al."Experimental performance of gas-solid countercurrent fluidized bed particle solar receiver with high-density suspension".Applied Thermal Engineering 213(2022).