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

被引：0
作者：
Zhang S. [1 ]
Yin Y. [1 ]
Jia P. [1 ]
Ye W. [1 ]
机构：
[1] School of Energy and Environment, Southeast University, Jiangsu, Nanjing
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷
关键词：
borehole thermal energy storage; characteristic temperature; computational fluid dynamics; dynamic simulation; numerical simulation;
D O I：
10.11949/0438-1157.20221623
中图分类号：
学科分类号：
摘要：
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. © 2023 Chemical Industry Press. All rights reserved.
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页码：295 / 301
页数：6
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