1. Investigation of the Heat Transfer Performance of Multi-Borehole Double-Pipe Heat Exchangers in Medium-Shallow Strata.
- Author
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Li, Wenjing, Zhang, Wenke, Li, Zhenxing, Yao, Haiqing, Cui, Ping, and Zhang, Fangfang
- Subjects
HEAT exchangers ,HEAT transfer ,TEMPERATURE distribution ,COOLING ,BOREHOLES ,PIPE - Abstract
Just as the double-pipe heat exchanger is being utilized in an increasing number of applications, its research content is also deepening. For this paper, based on the air-conditioning cold and heat source project of a building in Handan, Hebei Province, a 300-meter medium-shallow well double-pipe heat exchanger was used for heating and cooling, and a corresponding heat transfer model was established. The changes of parameters such as the inlet and outlet temperature, heat exchange (with and without a temperature gradient), and borehole wall temperature distribution between a single borehole, double boreholes, and four boreholes over one year in medium-shallow wells were simulated and analyzed. By comparing the obtained experimental data and the simulation data, the accuracy of the heat transfer model was verified. This provides a theoretical basis for the further advancement of the project and lays the foundation for an in-depth study of multi-borehole double-pipe heat exchangers. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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