Research on the Construction Technology of Radial Underground Heat Exchanger and its Heat Exchange Performance

Abstract:

5 radial heat exchange wells were designed, and the different angle drilling, drilling pipe, and grouting backfill construction technology was studied. In addition, the heat transfer performance of the buried radial heat exchange wells was tested. The results show that, design of pipe equipment is feasible, construction is convenient, and the ratio of backfill material is reasonable; the heat transfer performance of 90 °buried tube is the best. The smaller the angle with the ground heat exchanger, the greater the heat exchange performance is affected by the surface temperature.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 2488-2491
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.2488
• Online since: July 2014
• Authors: Rong Hui Wang, Qing Hua Wang*, Ye Feng
• Keywords: Buried Tube Heat Exchanger, Heat Exchange Performance, Radial Heat Exchange Wells

References

[1] Wang Qinghua, <Simulation of heat transfer and development of rock and soil thermophysical properties of in situ testing instrument>, April (2009).

[2] Zhang Lei, <Ground heat transfer model and numerical underground rock thermal conductivity measurement>, Jinan: Shandong Architecture University Master Thesis; April (2011).