A method to evaluate the performance of an open loop geothermal system for mine water heat recovery

User Rating:  / 1


D.V.Rudakov, orcid.org/0000-0001-7878-8692, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.V.Inkin, orcid.org/0000-0003-3401-9386, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2022, (1): 005 - 011



To develop a method to evaluate hydrodynamic and thermal parameters of an open loop geothermal system with the discharge into surface water bodies as well as to test the method under real site conditions considering different technology options, geotechnical and thermodynamic factors.

We employed the relations of hydraulics and thermodynamics, performed an engineering review of open loop geothermal systems for mine water heat recovery, studied hydrodynamic and mining conditions of the colliery Novohrodivska No.2. The developed technique includes evaluating the temperature of rocks around flooded workings, the length of the hydraulic path and flow resistance of workings.

The evaluated temperature of mine water entering on-ground heat exchangers ranges at 17.8 0.25 C, and the system thermal output is 1070 21 kW. Water temperature in flooded workings due to dilution with infiltration during the operation period of 25 years is expected to fall by 0.61.0 C, which decreases the thermal output by 5.68.3%. The estimated cooling of water during its rise in the shaft does not exceed 1C. The criterion of the geothermal system energy efficiency decreases from 1.8 when pumping close to the mine water level to 1.05 when pumping 460 m below the ground; the heat pump coefficient of performance (COP) reaches 5.0.

The flow characteristics and hydraulic flow lengths at different horizons, the temperature of rocks around workings were found to be the dominant factors for the thermal output under steady flow. The pumping depth was proved to significantly affect the energy efficiency of the system.

Practical value.
The proposed method allows quantifying the energy criterion of an open loop geothermal system with the discharge into surface watercourses, which enables optimizing system performance indicators.

mine water, geothermal systems, thermal flux, hydraulic model, thermal capacity


1. LANUV NRW (2018). Landesamt fr Natur, Umwelt, und Verbraucherschutz Nordrhein-Westfahlen: Potenzialstudie warmes Grubenwasser. Fachbericht 90. Recklinghausen. Retrieved from https://www.lanuv.nrw.de/fileadmin/lanuvpubl/3_fachberichte/LANUV-Fachbericht_90_web.pdf .

2. Banks, D., Athresh, A., Al-Habaibeh, A., & Burnside, N. (2019). Water from abandoned mines as a heat source: practical experiences of open- and closed-loop strategies, United Kingdom. Sustainable Water Resources Management, 5, 29-50. https://doi.org/10.1007/s40899-017-0094-7.

3. Sadovenko, I., Inkin, O., Dereviahina, N., & Khryplyvets, Y. (2019). Actualization of prospects of thermal usage of groundwater of mines during liquidation. E3S Web of Conferences 123, 01046. Ukrainian School of Mining Engineering, 1-9. https://doi.org/10.1051/e3sconf/201912301046.

4.Pivnyak, G., Samusia, V., Oksen, Y., & Radiuk, M. (2014). Parameters optimization of heat pump units in mining enterprises. In: Progressive technologies of coal, coalbed methane and ores mining, CRC Press, 19-24. https://doi.org/10.1201/b17547.

5. Pivnyak, G., Samusia, V., Oksen, Y., & Radiuk, M. (2015). Efficiency increase of heat pump technology for waste heat recovery in coal mines. New Developments in Mining Engineering 2015: Theoretical and Practical Solutions of Mineral Resources Mining, 1-4. https://doi.org/10.1201/b19901-2.

6. Ramos, E.P., Breede, K., & Falcone, G. (2015). Geothermal heat recovery from abandoned mines: a systematic review of projects implemented worldwide and a methodology for screening new projects. Environmental Earth Sciences,. 73, 6783-6795. https://doi.org/10.1007/s12665-015-4285-y.

7. Sadovenko, I., Rudakov, D., & Inkin, O. (2014). Geotechnical schemes to the multi-purpose use of geothermal energy and resources of abandoned mines. Progressive Technologies of Coal, Coalbed Methane, and Ores Mining, 443-450. https://doi.org/10.1201/b17547-76.

8. Loredo, C., Roque, N., & Ordez, A. (2016). Modelling flow and heat transfer in flooded mines for geothermal energy use: A review. International JournalInt J of Coal Geology, 164, 115-122. https://doi.org/10.1016/j.coal.2016.04.013.

9.Burnside, N.M., Banks, D., & Boyce, A.J. (2016). Sustainability of thermal energy production at the flooded mine workings of the former Caphouse Colliery, Yorkshire, United Kingdom. International Journal of Coal GeologyInt J Coal Geol, 164, 85-91. https://doi:10.1016/j.coal.2016.03.006.

10. Ni, L., Dong, J., Yao, Y., Shen, C., Qv, D., & Zhang, X. (2015). Areview of heat pump systems for heating and cooling of buildings in China in the last decade. Renewable Energy, 30-45.

11. Gillespie, M.R., Cran, E.J., & Barron, H.F. (2013). Deep geothermal energy potential in Scotland British Geological Survey Geology and Landscape, Scotland Programme. Commissioned Report Cr/12/131, 125p.

12. Bongole, K., Sun, Z., & Yao, J. (2021). Potential for geothermal heat mining by analysis of the numerical simulation parameters in proposing enhanced geothermal system at Bongor basin, Chad. Simulation Modelling Practice and Theory, 107, 102218. https://doi.org/10.1016/j.simpat.2020.102218.

13. Bao, T., Cao, H., Qin, Y., Jiang, G., & Liu, Z.L. (2020). Critical insights into thermohaline stratification for geothermal energy recovery from flooded mines with mine water. JournalJ of Cleaner Production, 273, 122989. https://doi.org/10.1016/j.jclepro.2020.122989.

14. Zhai, Y., Cao, X., Jiang, Y., Sun, K., Hu, L., Teng, Y., Wang, J., , & Li, J. (2021). Further discussion on the influence radius of a pumping well: a parameter with little scientific and practical significance that can easily be misleading. Water, 13, 2050. https://doi.org/10.3390/w13152050.

15. Purgina, D.V., & Kuzevanov, K.I. (2018). Water inflows into underground mine workings under the influence of external boundary conditions in the development of coal deposits. Bulletin of the Tomsk Polytechnic University. Engineering of georesources, (4), 74-96.

16. Kyrychenko, Y., Samusia, V., Kyrychenko, V., & Romanyukov, A. (2013). Experimental investigation of aero-hydroelastic instability parameters of the deep-water hydrohoist pipeline. Middle-East Journal of Scientific Research, 18(4), 530-534.

17. Orlov, V.A., & Khurgin, R.E. (2010). Optimization of hydraulic calculation of pipelines from various materials. Bulletin of the Moscow State University of Civil Engineering, (3), 118-122.

18. Sadovenko, I., & Inkin, . (2018). Method for Stimulating Underground Coal Gasification. Journal of Mining Science, 54(3), 514-521. https://doi.org/10.1134/S1062739118033941.

19. Moiseev, B.V. (2016). Methods of thermal calculation of pipelines for various purposes. Tyumen: TIU, 183 p.

20.Rudakov, D., Inkin, O., Dereviahina, N., & Sotskov, V. (2020). Effectiveness evaluation for geothermal heat recovery in closed mines of Donbas. E3S Web of Conferences 201, 01008. Ukrainian School of Mining Engineering, 1-10. https://doi.org/10.1051/e3sconf/202020101008.



This Month
All days

Guest Book

If you have questions, comments or suggestions, you can write them in our "Guest Book"

Registration data

ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.


D.Yavornytskyi ave.,19, pavilion 3, room 24-а, Dnipro, 49005
Tel.: +38 (056) 746 32 79.
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
You are here: Home Archive by issue 2022 Content №1 2022 A method to evaluate the performance of an open loop geothermal system for mine water heat recovery