Modeling and simulation of fluidized bed solid particle/sCO2 heat exchanger of sCO2 solar thermal power plant

被引：0
|
作者：
Yang Y. [1 ,2 ,3 ]
Yu Q. [1 ,2 ,3 ]
Wang Z. [1 ,2 ,3 ]
Bai F. [1 ,2 ,3 ]
机构：
[1] Key Laboratory of Solar Thermal Energy and Photovoltaic System of Chinese Academy of Sciences, Beijing
[2] Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing
[3] University of Chinese Academy of Sciences, Beijing
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 08期
关键词：
Heat exchanger; Lumped parameter method; SCO[!sub]2[!/sub; Solar thermal power; Solid particle;
D O I：
10.19912/j.0254-0096.tynxb.2020-1308
中图分类号：
学科分类号：
摘要：
In order to study the heat transfer characteristics under different operating conditions, a model of fluidized-bed solid particle/sCO2 heat exchanger is established by using the multi-section lumped parameter method in this paper, and the dynamic characteristics of the heat transfer system under the disturbances of different input variables are studied. Besides, the sensitivity of system performance to the key parameters is also analyzed. The results show that the disturbance of inlet temperature of the heat exchange system has a large influence on the outlet temperature of the heat exchanger, while the mass flow rate on the input side has a small influence; Small tube dimension and low tube number are easy to obtain a higher heat transfer coefficient for sCO2 side. In addition, the small particle size and the lower fluidizing-gas velocity are conducive to the improvement of the particle-side heat transfer coefficient under the minimum fluidization condition. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：195 / 203
页数：8
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