Numercial analysis on the thermal performance of capillary heat exchange system in metro running tunnel
Numercial analysis on the thermal performance of capillary heat exchange system in metro running tunnel
复制标题
地铁运行隧道毛细管换热系统热工性能数值分析
DOI：
10.1016/j.enbenv.2020.01.003
复制
发表时间：
2020-04
影响因子：
--
通讯作者：
Fujian Jiang
中科院分区：
文献类型：
--
作者：
Mingyue Ren;Yanping Yuan;Xiaoling Cao;Liangliang Sun;Fujian Jiang
地铁隧道毛细管换热系统运行过程中，管道长度、管道间距和风速对传热效果有不同的影响，并表现出一定的规律。以昆明市为例，采用单因素分析方法建立多毛细管模型，得到传热过程中不同影响因素的变化规律。在此基础上，建立单毛细管模型，分析两种模型之间管距的热干扰变化。在保证毛细管出水温度和热通量的情况下，对毛细管换热器的相关参数进行优化。结果表明，毛细管换热器的管道长度应保持在3~5 m，管道间距保持在20~30 mm，并且每组毛细管换热器可以并联运行，以保证换热器具有较好的传热性能。系统停止运行期间，冬季和夏季风速对围岩恢复的影响不同。
During the operation of the capillary heat exchange system in the metro tunnel, the pipe length, pipe spacing and air velocity have different effects on the heat transfer effect and show certain rules. Taking Kunming as an example, a single-factor analysis method was used to establish multiple-capillary model, and the variation of different influencing factors in the heat transfer process was obtained. On this basis, a single-capillary model was established to analyze the thermal interference variation of the pipe spacing between the two models. Under the condition of ensuring the capillary outlet water temperature and heat flux, the relevant parameters of the capillary heat exchanger were optimized. The results show that the pipe length of the capillary heat exchanger should be kept within 3–5 m, the pipe spacing is maintained at 20–30 mm, and the capillary heat exchanger of each set can be operated in parallel to ensure that heat exchanger have better heat transfer performance. During the system stop running, the air velocity in winter and summer has different effects on the recovery of surrounding rock.
影响因子：
11.7
作者：
Li Tong;Huang Songtao;L. Shan;Yimei Wang
通讯作者：
Li Tong;Huang Songtao;L. Shan;Yimei Wang
DOI：
--
发表时间：
2009
期刊：
Chinese Journal of Underground Space and Engineering
影响因子：
--
作者：
Wang Wei
通讯作者：
Wang Wei