基于耦合传热的电制热固体蓄热结构优化研究  

Research on Optimal Design of Electric Heating and Heat Storage Structure With Coupled Heat Transfer

作　　者：邢作霞[1] 赵海川 陈雷[1] 齐凤升 代俊雯 颜宁[1] XING Zuoxia;ZHAO Haichuan;CHEN Lei;QI Fengsheng;DAI Junwen;YAN Ning(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,Liaoning Province,China;College of Metallurgy,Northeast University,Shenyang 110819,Liaoning Province,China;Dalian Electric Power Survey and Design Institute Co.Ltd.,Dalian 116011,Liaoning Province,China)

机构地区：[1]沈阳工业大学电气工程学院,辽宁省沈阳市110870 [2]东北大学冶金学院,辽宁省沈阳市110819 [3]大连电力勘察设计院有限公司,辽宁省大连市116011

出　　处：《中国电机工程学报》2019年第20期5999-6007,共9页Proceedings of the CSEE

基　　金：国家科技支撑计划项目(2015BAA01B00);国家电网公司科技项目(2018YF-14)~~

摘　　要：为提高固体蓄热系统传热性能,降低其内部流体动力损失,对固体蓄热结构参数进行优化。采用流固耦合的方法对蓄热结构传热过程建模,并对蓄热结构内部温度变化及流体动力特性进行分析。利用数值模拟的方式对蓄热结构的通道结构、孔隙率及进口空气流速等参数进行优化分析。根据优化结果搭建蓄热功率为250kW的蓄热试验平台进行验证,结果表明:具有单通道、孔隙率为20%的蓄热结构在进口空气流速为6~7m/s的情况下,温度均匀性良好,蓄热速率快,内部流体动力损失小。In order to improve the heat transfer performance of solid sensible heat storage system and reduce internal hydrodynamic loss, the structural parameters of solid sensible heat storage system were optimized. The heat transfer process of heat storage structure was modeled by the method of fluid-solid coupling, and the temperature change and hydrodynamic characteristics of the heat storage structure were analyzed. By means of numerical simulation, the parameters such as the channel of the storage structure, the porosity of the heat storage structure and the flow rate of the inlet air were optimized. According to the optimization results, the heat storage test platform with a heat storage power of 250 kW was constructed. The results show that the heat storage structure with a porosity of 20% with a single channel has good temperature uniformity, fast heat storage rate and small internal hydrodynamic loss under the condition that the inlet air flow rate is 6~7 m/s.

关 键 词：耦合传热 固体蓄热 蓄热结构 参数优化 

分 类 号：TK123[动力工程及工程热物理—工程热物理]