THERMAL SCIENCE
International Scientific Journal
INFLUENCING LAW OF KEY PARAMETERS ON THE THERMAL EFFICIENCY OF SINGLE-WELL CLOSED-LOOP HEAT EXCHANGER
ABSTRACT
The single-well closed-loop heat extraction technology can realize efficient exploitation of mid-to-deep geothermal resources. A two-dimension heat transfer model is established. The effects of flow rate, inlet temperature, length and diameter of insulated tubing on heat extraction power and outlet temperature were investigated by the two-way absolute grey correlation analysis method. Results indicate that thermal power increases with the increase of displacement and length of insulated tubing, and decreases with the increase of injection temperature, outer diameter of insulated tubing and inner diameter of insulated tubing.
KEYWORDS
PAPER SUBMITTED: 2023-07-15
PAPER REVISED: 2023-08-22
PAPER ACCEPTED: 2023-11-09
PUBLISHED ONLINE: 2024-02-18
THERMAL SCIENCE YEAR
2024, VOLUME
28, ISSUE
Issue 2, PAGES [1037 - 1043]
- Lu, Y., et al., Research on Geothermal Resource Exploration and Development Issues in the New Era (in Chinese), Exploration Engineering, 45 (2018), 3, pp. 1-8
- Cui, G., et al., Particle Migration and Formation Damage During Geothermal Exploitation from Weakly Consolidated Sandstone Reservoirs Via Water and CO2 Recycling, Energy, 240 (2022), 2, ID122507
- Song, W., et al., Migration-Deposition Characteristics of Exogenous Particles Near the Injection Well in a Groundwater Heat Pump System, Geothermics, 94 (2021), 7, ID102097
- Cao, Q., et al., Current Status and Implications of Geothermal Reinjection Development at Home and Abroad (in Chinese), Oil Drilling and Production Technology, 43 (2021), 2, pp. 203-211
- Song, X., et al., Heat Extraction Performance of a Downhole Coaxial Heat Exchanger Geothermal System by Considering Fluid-Flow in the Reservoir, Geothermics, 76 (2018), Nov., pp. 190-200
- Song, X., et al., Study on Thermal Conductivity of Cement with Thermal Conductive Materials in Geothermal Well, Geothermics, 81 (2019), 9, pp. 1-11
- Holmberg, H., et al., Thermal Evaluation of Coaxial Deep Borehole Heat Exchangers, Renewable Energy, 97 (2016), 11, pp. 65-76
- Huang, Y., et al., Thermal Performance Analysis on the Composition Attributes of Deep Coaxial Borehole Heat Exchanger for Building Heating, Energy and Buildings, 221 (2020), 8, ID110019
- Wang, G., et al., Heat Extraction Analysis of a Novel Multilateral-Well Coaxial Closed-Loop Geothermal System, Renewable Energy, 163 (2021), 1, pp. 974-986
- Zhang, K. M., et al., Development and Application of BLD Series High-Efficiency Insulation Steel Tubingsfor Geothermal Wells (in Chinese), Drilling Project, 48 (2021), 11, pp. 56-64
- Delafkaran, M., et al., Design and Analysis of High Temperature, Thermally Insulated, Pipe-in-Pipe Risers, Proceedings, Offshore Technology Conference, Houston, Tex., USA, 1997
- Ferreira, M. V., et al., Thermally Insulated Tubing Application Prevent Annular Pressure Buildup in Brazil Offshore Fields, Proceedinhs, SPE Deepwater Drilling and Completions Conference, Houston, Tex., USA, 2012
- Azzola, J. H., et al., The Heat Transfer Characteristics of Vacuum Insulated Tubing, Proceedings, SPE Annual Technical Conference and Exhibition, Houston, Tex., USA, 2004
- Javed, S. A., et al., Bidirectional Absolute GRA/GIA Model for Uncertain Systems: Application in Project Management, IEEE Access, 7 (2019), Mar., pp. 60885-60896
- Dai, J., et al., Analysis of Thermal Performance of Coaxial Borehole Heat Exchanger Using Liquid Ammonia, On-line first, papers.ssrn.com/sol3/papers.cfm?abstract_id=4082872, 2022
- Deng, J. L., Grey Control Systems (in Chinese), Journal of Huazhong Institute of Technology, 3 (1982), pp. 9-18
- Wang, Y. M., et al., Application of Improved Grey Correlation Analysis in Environmental Quality Assessment, Sichuan Building Materials, 48 (2022), 07, pp. 60-61+63
- Cao, M. X., Study on Grey Correlation Analysis Model and Its Application (in Chinese), Ph. D. thesis, Nanjing University of Aeronautics and Astronautics, Nanjing, China, 2007
