CIESC Journal ›› 2023, Vol. 74 ›› Issue (S1): 295-301.DOI: 10.11949/0438-1157.20221623

• Energy and environmental engineering • Previous Articles     Next Articles

Study on seasonal thermal energy storage characteristics of double U-shaped buried pipe group

Siyu ZHANG(), Yonggao YIN(), Pengqi JIA, Wei YE   

  1. School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China
  • Received:2022-11-15 Revised:2022-12-25 Online:2023-09-27 Published:2023-06-05
  • Contact: Yonggao YIN


张思雨(), 殷勇高(), 贾鹏琦, 叶威   

  1. 东南大学能源与环境学院,江苏 南京 210096
  • 通讯作者: 殷勇高
  • 作者简介:张思雨(1998—),女,硕士研究生,
  • 基金资助:


Borehole thermal energy storage (BTES) can solve the contradiction between energy supply and demand in time and space, which is an important means to improve energy utilization efficiency. In this paper, the three-dimensional transient numerical model of the buried pipe thermal storage is established to realize the full-cycle dynamic monitoring of the three types of characteristic temperatures of the buried pipe thermal storage and the boundary heat flow, as well as to evaluate the thermal characteristics of the system under long-cycle operation. The results show that after the full-cycle operation, the average soil volume temperature increases by 10% compared with the initial state, and the lateral heat loss of the heat storage body accounts for 66%—90% of the total heat loss. The BTES efficiency of the system increases year by year, and basically reaches stability in the 7th year, when the efficiency can reach 55.2%. This research aims to provide a certain reference for the actual engineering design and application of BTES system.

Key words: borehole thermal energy storage, numerical simulation, computational fluid dynamics, dynamic simulation, characteristic temperature



关键词: 跨季节埋管蓄热技术, 数值模拟, 计算流体力学, 动态仿真, 特征温度

CLC Number: