[1]贾兴龙,陈宝明*,张艳勇,等.梯度骨架对固液相变蓄热特性影响研究[J].山东建筑大学学报,2020,35(05):53-63.[doi:10.12077/sdjz.2020.05.009]
 JIA Xinglong,CHEN Baoming*,ZHANG Yanyong,et al.Study on the effect of gradient skeleton on the heat storage characteristics of solid-liquid phase change[J].Journal of Shandong jianzhu university,2020,35(05):53-63.[doi:10.12077/sdjz.2020.05.009]
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梯度骨架对固液相变蓄热特性影响研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
35
期数:
2020年05期
页码:
53-63
栏目:
研究论文
出版日期:
2020-09-05

文章信息/Info

Title:
Study on the effect of gradient skeleton on the heat storage characteristics of solid-liquid phase change
文章编号:
1673-7644(2020)05-0056-08
作者:
贾兴龙陈宝明*张艳勇李萌
(山东建筑大学 热能工程学院,山东 济南 250101)
Author(s):
JIA Xinglong CHEN Baoming* ZHANG Yanyong LI Meng
( School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China )
关键词:
梯度骨架固液相变平均蓄热速率蓄热性能
Keywords:
gradient skeleton solid-liquid phase change average heat storage rate heat storage performance
分类号:
TU996
DOI:
10.12077/sdjz.2020.05.009
文献标志码:
A
摘要:
在相变材料中添加高导热率的金属骨架可以缩短固液相变过程的融化时间,提高相变蓄热系统的平均蓄热速率。文章建立了二维含梯度骨架固液相变模型,利用有限元分析法对相变过程进行数值模拟,探讨方腔内填充不同梯度金属骨架结构对固液相变蓄热特性的影响。结果表明:与不填充金属骨架的纯石蜡固液相变过程相比,填充金属骨架后,传热方式以金属骨架的导热为主;在不同的骨架数量条件下,均为正梯度骨架结构的完全融化时间最短、平均蓄热速率最快,且骨架数量越多、孔隙率越小,正梯度骨架结构的平均蓄热速率越大;由于正梯度骨架结构强化了远离加热源测相变材料的换热过程,因此对相变换热过程的强化效果最好。
Abstract:
By adding a metal skeleton with high thermal conductivity to the phase change material, the melting time of the solid-liquid phase change process can be shorten, and the average heat storage rate of the phase change heat storage system can be increased. A two-dimensional solid-liquid phase transition model with gradient skeleton is established in this paper. By using finite element analysis method numerical simulation, research is made to explore the effect of solid metal-liquid phase heat storage characteristics in the cavity filled with different gradient metal skeleton structure. The results show that compared with the solid-liquid phase change process of pure paraffin without filling the metal skeleton, after the metal skeleton is filled, the heat transfer method is mainly based on the thermal conductivity of the metal skeleton. Under different conditions, in the case of the normal gradient skeleton structure, the complete melting time is the shortest; under the condition of the two kinds of skeletons, the average heat storage rate of the positive gradient skeleton structure is the fastest, and the more the number of skeletons, the smaller the porosity, and the the larger the average heat storage rate. Because the positive gradient skeleton structure strengthened the heat transfer process of the phase change material away from the heating source, the enhancement effect of the phase change thermal process is the best.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-07-25 基金项目:国家自然科学基金面上项目(51976111)作者简介:贾兴龙(1996- ),男,在读硕士,主要从事多孔介质内流动换热等方面的研究。E-mail:15610171294@163.com 通讯作者* :陈宝明(1963-),男,教授,博士,主要从事复杂体系中的传热传质等方面的研究。E-mail:chenbm@sdjzu.edu.cn
更新日期/Last Update: 2020-03-22