摘要
隧道相变蓄冷降温技术是绿色、环保、节能和可持续的新技术,可克服高岩温隧道传统降温方法的局限性,助力国家早日实现“双碳”目标。通过文献综述系统地总结能源隧道、相变蓄冷材料、相变储能结构、基于隧道衬砌换热器储能的相变板研究现状以及相变材料在隧道和地下工程降温中应用的研究现状与进展,旨在加快隧道相变蓄冷降温新技术的应用和推广。研究表明:(1)能源隧道可实现高效利用浅层地热能,隧道衬砌换热器可以提取足够的浅层地热能用于相变储能结构蓄能;(2)固-液相变蓄冷材料应用广泛,建议优先选择和调配高导热性、高潜热、相变温度合适和稳定性好的复合固-液相变蓄冷材料用于实际工程;(3)改变管型布局,添加鳍片结构,设计不同几何外型的相变储能结构等方法可优化和提升相变储能结构的传热性能;(4)利用隧道衬砌换热器给相变板储存冷量是可行的,增强相变材料导热性,提高相变温度和围岩温度的温差,以及增加隧道衬砌换热器长度均可提高相变板储能效率;(5)相变材料在隧道和其他地下工程(如避难硐室)降温中的研究与应用表明相变材料用于隧道降温是可行的。
The phase change cold storage and cooling technology for tunnels is a green,environment-friendly,ener⁃gy-efficient and sustainable new technology that can overcome the limitations of the conventional cooling methods for tunnels with high rock temperature,thus contributing to the accomplishment of dual carbon goals.Through a lit⁃erature review,this paper systematically analyzes the current status of the research into energy tunnels,phase change cold storage material,phase change energy storage structure and the phase change plate based on tunnel lining heat exchanger energy storage and also the current situation and progress of the research into application of phase change materials in tunnels and underground works,so as to promote the application and popularization of the new phase change cold storage and cooling technology for tunnels.The study indicates:(1)Energy tunnel is an efficient way of using shallow geothermal energy,and tunnel lining heat exchanger can extract sufficient shallow geothermal energy for the purpose of energy storage in phase change energy storage structure;(2)Solid-liquid phase change cold storage materials have been widely applied.It is recommended to use the composite solid-liquid phase change cold storage materials with high thermal conductivity,high latent heat,suitable phase change temperature and excel⁃lent stability in actual projects;(3)The approaches such as changing pipe type,adding fin structure and designing the phase change energy storage structures of various geometric forms will optimize and improve the heat transfer performance of phase change energy storage structure;(4)Storing cold in phase change plate by using tunnel lining heat exchanger is feasible,and increasing the thermal conductivity of phase change material,increasing difference between the phase change temperature and surrounding rock temperature and increasing the length of tunnel lining heat exchanger will all increase the energy efficiency of phase change plate;(5)Research into application of phase change materials in tunnel and underground engineering(e.g.refuge chamber)indicates that it is feasible to use phase change materials for tunnel cooling.
作者
吴元昊
张国柱
操子明
李承霖
刘昕烨
刘易斐
WU Yuanhao;ZHANG Guozhu;CAO Ziming;LI Chenglin;LIU Xinye;LIU Yifei(China Construction Eighth Engineering Division Corp.,Ltd.,Shanghai 200112;Institute of Geotechnical Engineering of Southeast University,Nanjing 211189)
出处
《现代隧道技术》
CSCD
北大核心
2023年第6期80-90,共11页
Modern Tunnelling Technology
基金
国家自然科学基金(51978162)
中建股份科技研发计划资助(CSCEC-2022-Q-55).
关键词
高岩温隧道
相变储能
衬砌换热器
地热能
相变材料
相变降温
Tunnel with high rock temperature
Phase change energy storage
Lining heat exchanger
Geothermal energy
Phase change material
Phase change cooling
