外置电阻式固体蓄热结构热应力建模与分析

doi:10.12028/j.issn.2095-4239.2018.0235

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (2): 333-337.doi: 10.12028/j.issn.2095-4239.2018.0235

外置电阻式固体蓄热结构热应力建模与分析

胡晓¹, 杨岑玉¹, 陈雷², 邢作霞², 赵海川², 徐桂芝¹

1 全球能源互联网研究院有限公司, 北京 102209;
2 沈阳工业大学电气工程学院, 辽宁沈阳 110870

收稿日期:2018-12-03 修回日期:2019-01-07 出版日期:2019-03-01 发布日期:2019-03-01
作者简介:胡晓(1983-),女,博士,高级工程师,主要从事储热装置设计与传热仿真工作;E-mail:huxiaouk@qq.com
基金资助:
国家电网公司总部科技项目：储热材料及部件试验检测技术研究[SGRIDLKJ（2016）792]

A finite element analysis of thermal stress in an external resistant based regenerator

HU Xiao¹, YANG Cenyu¹, CHEN Lei², XING Zuoxia², ZHAO Haichuan², XU Guizhi¹

1 Global Energy Interconnection Research Institute Co. Ltd, Beijing 102209, China;
2 School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China

Received:2018-12-03 Revised:2019-01-07 Online:2019-03-01 Published:2019-03-01

摘要/Abstract

摘要： 针对外置电阻式蓄热体在温度载荷下产生热形变致使蓄热体结构不稳定的问题，利用理论推导与有限元数值模拟相结合的方式对蓄热体的热形变及热应力进行分析。通过理论推导不同相变蓄热材料在温度载荷下所产生的热应力及热形变方程，并利用数值模拟的方式对某一工况下的蓄热体热应力数值及分布情况研究，同时进行实际案例分析验证蓄热体内热应力的存在与危害，为蓄热体结构优化设计和工况参数配置提供参考依据。

关键词: 电热储能, 外置电阻, 热变形, 热应力

Abstract: The thermal deformation and thermal stress of a resistant based regenerator were analyzed by a combination of theoretical analyses and finite element numerical simulations, aimed at the understanding if thermal deformation of the external resistive regenerator could cause unstable structure of the regenerator. The thermal stress and thermal deformation equations of different phase change materials under temperature cycling were deduced theoretically, and the numerical simulations were carried out on the thermal stress and its distribution in the regenerator under a certain working condition (case study). The modelling was validated qualitatively by comparing with the operation of an actual thermal storage body.

Key words: electrothermal energy storage, external resistance, thermal deformation, thermal stress

中图分类号:

TM123

胡晓, 杨岑玉, 陈雷, 邢作霞, 赵海川, 徐桂芝. 外置电阻式固体蓄热结构热应力建模与分析[J]. 储能科学与技术, 2019, 8(2): 333-337.

HU Xiao, YANG Cenyu, CHEN Lei, XING Zuoxia, ZHAO Haichuan, XU Guizhi. A finite element analysis of thermal stress in an external resistant based regenerator[J]. Energy Storage Science and Technology, 2019, 8(2): 333-337.

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外置电阻式固体蓄热结构热应力建模与分析

A finite element analysis of thermal stress in an external resistant based regenerator

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