Field Test and Numerical Simulation on Heat Transfer Performance of Coaxial Borehole Heat Exchanger
文献类型：期刊论文
| 作者 | Li, Peng1,2; Guan, Peng1,2; Zheng, Jun1,2; Dou, Bin1,2; Tian, Hong1,2; Duan, Xinsheng1,2; Liu, Hejuan3 |
| 刊名 | ENERGIES
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 13期号:20页码:19 |
| 关键词 | ground source heat pumps coaxial borehole heat exchangers improved thermal response test sensitivity analysis |
| DOI | 10.3390/en13205471 |
| 英文摘要 | Ground thermal properties are the design basis of ground source heat pumps (GSHP). However, effective ground thermal properties cannot be obtained through the traditional thermal response test (TRT) method when it is used in the coaxial borehole heat exchanger (CBHE). In this paper, an improved TRT (ITRT) method for CBHE is proposed, and the field ITRT, based on the actual project, is carried out. The high accuracy of the new method is verified by laboratory experiments. Based on the results of the ITRT and laboratory experiment, the 3D numerical model for CBHE is established, in which the flow directions, sensitivity analysis of heat transfer characteristics, and optimization of circulation flow rate are studied, respectively. The results show that CBHE should adopt the anulus-in direction under the cooling condition, and the center-in direction under the heating condition. The influence of inlet temperature and flow rate on heat transfer rate is more significant than that of the backfill grout material, thermal conductivity of the inner pipe, and borehole depth. The circulating flow rate of CBHE between 0.3 m/s and 0.4 m/s can lead to better performance for the system. |
| 资助项目 | National Key Research and Development Programs of China[2019YFB1504201] ; National Key Research and Development Programs of China[2019YFB1504203] ; National Key Research and Development Programs of China[2019YFB1504204] ; Experimental Technology Research Project of China University of Geosciences (Wuhan)[SJ-202009] ; Fundamental Research Founds for National University, China University of Geosciences (Wuhan)[1910491A18] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000586280200001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25072]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Dou, Bin; Tian, Hong |
| 作者单位 | 1.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China 2.Natl Ctr Int Res Deep Earth Drilling & Resource D, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Peng,Guan, Peng,Zheng, Jun,et al. Field Test and Numerical Simulation on Heat Transfer Performance of Coaxial Borehole Heat Exchanger[J]. ENERGIES,2020,13(20):19. |
| APA | Li, Peng.,Guan, Peng.,Zheng, Jun.,Dou, Bin.,Tian, Hong.,...&Liu, Hejuan.(2020).Field Test and Numerical Simulation on Heat Transfer Performance of Coaxial Borehole Heat Exchanger.ENERGIES,13(20),19. |
| MLA | Li, Peng,et al."Field Test and Numerical Simulation on Heat Transfer Performance of Coaxial Borehole Heat Exchanger".ENERGIES 13.20(2020):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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