北京交通大学学报2024，Vol.48Issue(6)：43-50,8.DOI:10.11860/j.issn.1673-0291.20240017
基于正交试验的能源地下连续墙换热性能影响因素分析
Analysis of factors influencing heat transfer performance of energy diaphragm walls based on orthogonal test
摘要
Abstract
To address the limitations in current research on the heat transfer characteristics and mecha-nisms of energy diaphragm walls,this study examines the influence of various factors on heat transfer efficiency.First,a three-dimensional numerical model is established,with simulation data validated against measured data to ensure model accuracy.Based on this model,a 90-day operational period is simulated,during which the effects of branch pipe spacing,inlet water temperature,circulating water flow rate,initial ground temperature,and soil thermal conductivity on the heat transfer efficiency of en-ergy diaphragm walls are analyzed using single-factor tests.Finally,the influence of each factor on thermal efficiency of energy diaphragm walls is compared through orthogonal tests.The results indi-cate that increasing branch pipe spacing,inlet water temperature,circulating water flow rate,and soil thermal conductivity,as well as reducing initial ground temperature,all contribute to enhanced heat transfer rates.Notably,increased branch pipe spacing and circulating water flow rate yield better im-provements in heat transfer efficiency during the early stages of system operation than later stages,while higher soil thermal conductivity proves more beneficial in the later stages.The ranking of fac-tor influence on heat transfer efficiency for energy diaphragm walls is as follows:inlet water tempera-ture>initial ground temperature>branch pipe spacing>soil thermal conductivity>circulating water flow rate.关键词
岩土工程/能源地下连续墙/数值模拟/换热效率/正交试验Key words
geotechnical engineering/energy diaphragm wall/numerical simulation/heat transfer effi-ciency/orthogonal test分类
建筑与水利引用本文复制引用
郑文杰,蔡国庆,米明昊,韩锋,王硕,李海龙..基于正交试验的能源地下连续墙换热性能影响因素分析[J].北京交通大学学报,2024,48(6):43-50,8.基金项目
国家自然科学基金(52425805) （52425805）
江苏省隧道与地下工程技术研究中心开放课题(2021-SDJJ-04) （2021-SDJJ-04）
中铁建设集团科技开发课题(C23L00380)National Natural Science Foundation of China(52425805) （C23L00380）
Development Fund of Tunnel and Underground Engineering Research Center of Jiangsu Province(2021-SDJJ-04) （2021-SDJJ-04）
Science and Technology Development Project of China Railway Construc-tion Group(C23L00380) （C23L00380）
