[1]白丽丽,裴华富,宋怀博,等.相变能量桩段模型传热模拟[J].防灾减灾工程学报,2019,39(04):684-690.[doi:10.13409/j.cnki.jdpme.2019.04.021]
 BAI Lili,PEI Huafu,SONG Huaibo,et al.Heat Transfer Simulation of Phase Change Energy Pile[J].Journal of Disaster Prevention and Mitigation Engineering,2019,39(04):684-690.[doi:10.13409/j.cnki.jdpme.2019.04.021]
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相变能量桩段模型传热模拟()
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防灾减灾工程学报[ISSN:1672-2132/CN:32-1695/P]

卷:
39卷
期数:
2019年04期
页码:
684-690
栏目:
论文
出版日期:
2019-08-31

文章信息/Info

Title:
Heat Transfer Simulation of Phase Change Energy Pile
文章编号:
1672-2132(2019)04-0684-07
作者:
白丽丽 裴华富 宋怀博 张培龙
(大连理工大学岩土工程研究所, 辽宁 大连 116024)
Author(s):
BAI Lili PEI Huafu SONG Huaibo ZHANG Peilong
(Institute of Geotechnical Engineering, Dalian University of Technology, Dalian 116024, China)
关键词:
能量桩 相变材料 传热模拟 COMSOL Multiphysics
Keywords:
energy pile phase change materials heat transfer simulation COMSOL Multiphysics
分类号:
TU443
DOI:
10.13409/j.cnki.jdpme.2019.04.021
文献标志码:
A
摘要:
针对能量桩体材料普通混凝土储热性能差问题,将相变材料引入普通混凝土中构建相变能量桩。利用简化能量桩段有限元数值模型模拟了普通能量桩与相变能量桩的传热过程,对比分析了两者的传热差异; 并通过添加不同质量分数相变材料,研究了添加量对能量桩桩体、桩周土传热的影响。研究结果表明:在换热管吸放热工况下,相变材料的添加可在相变温度区间内明显延缓桩体升降温速度; 相变材料的添加量越多,升降温延缓作用越明显; 能量桩中添加相变材料只对桩体的传热影响显著,对桩周土的温度场影响较小。
Abstract:
Aiming at the problem of poor heat storage performance of ordinary concrete as energy pile materials, phase change materials were introduced into ordinary concrete to construct phase change energy piles. The heat transfer process of ordinary energy piles and phase change energy piles was simulated by the finite element numerical model on simplified energy piles. The difference of heat transfer between the two energy piles was compared and analyzed. The effects of the mixing content on the heat transfer of the energy pile and the soil around the pile were studied by adding different mass fractions of phase change materials. It is found that the addition of phase change material can significantly delay the temperature rising and decreasing of the pile in the phase change range when the heat exchange tube absorbs or releases heat. The more the phase change material is added, the obvious the delay effect of temperature rising and decreasing. The phase change material added to the energy pile only has a significant effect on the heat transfer of the pile, while has little effect on the temperature field of the soil around the pile.

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备注/Memo

备注/Memo:
收稿日期:2019-01-24; 修回日期:2019-04-14 基金项目:国家自然科学基金项目(51778107)资助 作者简介:白丽丽(1994-),女,硕士研究生。主要从事能量桩材料改性研究。Email:lilybai@mail.dlut.edu.cn 通讯作者:裴华富(1983-),男,教授,博导,博士。主要从事岩土工程监测、能源地下结构相关研究。 Email:huafupei@dlut.edu.cn
更新日期/Last Update: 2019-09-15