Author(s)

Baiyang Sun ¹, Guanghao Zhang ¹, Shuaitao Li ¹, Yuxuan Li ¹, Yapeng Yuan ¹

Affiliation(s)

¹ School of Mechanical Engineering, North China University of Science and Technology, Tangshan, 063210, China

Corresponding Author

Baiyang Sun

ABSTRACT

There are still some problems with the actual heat transfer in ground-source heat pump systems. In order to study the influence of different working conditions on the heat exchange efficiency of the buried tube heat exchanger, the temperature field around the buried tube heat exchanger is simulated by using fluent software. The results show that the closer the temperature field is to the tube wall, the greater the temperature change is, and it has no effect on the soil layer with larger radial distance. In summer condition, soil temperature and heat transfer increase with increasing inlet velocity of working medium. When different backfillers are used, the backfillers with relatively large thermal conductivity can improve the heat transfer and improve the heat transfer efficiency. By analyzing the influence of different working conditions on the heat transfer efficiency of the buried pipe heat exchanger, the research results can provide reference value for the practical design of buried pipe and the future heat transfer simulation optimization of the heat pump system.

KEYWORDS

Ground heat exchanger; Ground source heat pump; Fluent; Different working conditions; Temperature field

CITE THIS PAPER

Baiyang Sun, Guanghao Zhang, Shuaitao Li, Yuxuan Li, Yapeng Yuan, Analysis of influence of running time on heat transfer efficiency of buried tube heat exchanger under different working conditions. Journal of Engineering Mechanics and Machinery (2024) Vol. 9: 59-68. DOI: http://dx.doi.org/10.23977/jemm.2024.090208.

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