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Influence of Adding the Insulation Board on Hot Short Circuit ofthe Vertical U-Tube Ground Heat Exchanger(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2016年01期
Page:
66-
Research Field:
能源工程
Publishing date:

Info

Title:
Influence of Adding the Insulation Board on Hot Short Circuit ofthe Vertical U-Tube Ground Heat Exchanger
Author(s):
Luo Lang; Yu Yuejin; Zheng Lipeng; Xia Wen
School of Energy and Mechanical Engineering，Nanjing Normal University，Nanjing 210042，China
Keywords:
U-type buried tube; insulation board; numerical simulation; heat exchange performance
PACS:
TK01+8
DOI:
-
Abstract:
The paper simulates with FLUENT software to build three -dimensional heat transfer model of U-tube buried tube heat exchanger. When adding insulation panels are simulated with and without conditions，to simulate the thermal circuit，the influence of the performance of ground heat exchanger is analyzed. By comparing the two kinds of working conditions of temperature and outlet temperature monitoring diagram，simulation proves that the hot short circuit phenomenon is serious between the two branch pipe，and after adding insulation board，the import and export temperature difference can reach 3.94 ℃，and the unit well depth in heat can be made to improve 6.13%.

References:

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Last Update: 2016-03-20