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Numerical Study of Soil Saturation Effects on the Thermal Performance of a Horizontal Geothermal Heat Exchanger

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Jul 02, 2025

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LUND, J.W. – BOYD, T.L.: Direct Utilization of Geothermal Energy 2015 Worldwide Review, Geothermics, Vol. 60, 2016, pp. 66–93. Search in Google Scholar

SELF, S. – REDDY, B.V. – ROSEN, M.A.: Geothermal Heat Pump Systems: Status Review andComparison with Other Heating Options, Applied Energy, Vol. 101, 2013, pp. 341–348. Search in Google Scholar

WU, W. – SKYE, H.M.: Progress in Ground-source Heat Pumps Using Natural Refrigerants, International Journal of Refrigeration, Vol. 92, 2018, pp. 8-18. Search in Google Scholar

GARBER-SLAGHT, R.: Performance Considerations for Ground Source Heat Pumps in Cold Climates: Preprint, National Renewable Energy Laboratory, 2021, NREL/CP-5600-79479. Search in Google Scholar

AKINDIPE, D. – WITTER, E. – PRILLIMAN, M.: Variability in Diurnal and Seasonal Ambient Conditions on Geothermal Plant Performance and Cost, National Renewable Energy Laboratory, 2023, NREL/CP-5700-86995. Search in Google Scholar

SPITLER, J.D. – GEHLIN, S.E.A.: Thermal Response Testing for Ground Source Heat Pump Systems – An Historical Review, Renewable and Sustainable Energy Reviews, Vol. 50, 2015, pp. 1125–1137. Search in Google Scholar

GAO, W. – MASUM, S. – JIANG, L.: Technical Performance Comparison of Horizontal and Vertical Ground-Source Heat Pump Systems, Journal of GeoEnergy, 2023, Article 6106360. Search in Google Scholar

WANG, S. – JI, Y. – HE, S. – GAO, J. – WANG, Y. – CAI, X.: Study on heat transfer performance of a ground heat exchanger under different heat transfer mechanisms, Case Studies in Thermal Engineering, Vol. 51, 2023, 103571. Search in Google Scholar

HU, L. – RIZVI, Z.H. – TOBBER, L. – WUTTKE, F.: Thermal Performance of Three Horizontal Ground Heat Exchanger Systems: Comparison of Linear-Loop, Spiral-Coil and Slinky-Coil Arrangements, Frontiers in Energy Research, 2023, Vol. 11. Search in Google Scholar

ZHU, H.: Numerical Simulation of Temperature Field Around Buried Pipes of Ground Source Heat Pumps Based on Mathematical Models, Thermal Science, Vol. 28, No. 2B, 2024, pp. 1441–1448. Search in Google Scholar

DI SIPIO, E. – BERTERMANN, D.: Factors Influencing the Thermal Efficiency of Horizontal Ground Heat Exchangers, Energies, Vol. 10, No. 11, 2017, 1897. Search in Google Scholar

ALI, M.H. – KARIYA, K. – MIYARA, A.: Performance Analysis of Slinky Horizontal Ground Heat Exchangers for a Ground Source Heat Pump System, Resources, Vol. 6, No. 4, 2017, 56. Search in Google Scholar

ZOU, H. – PEI, P. – WANG, C. – HAO, D.: A Numerical Study on Heat Transfer Performances of Horizontal Ground Heat Exchangers in Ground-Source Heat Pumps, PLoS ONE, Vol. 16, No. 5, 2021, e0250583. Search in Google Scholar

CONGEDO, P.M. – COLANGELO, G. – STARACE, G.: CFD simulations of horizontal ground heat exchangers: A comparison among different configurations, Applied Thermal Engineering, Vol. 33-34, 2012, pp. 24–32. Search in Google Scholar

OMRAN, H.E. – HUSSAIN, T.A. – HACHIM, D.M.: Study of Two Layers Horizontal Ground Heat Exchanger Performance Under a Different Operation Mode, IOP Conference Series: Materials Science and Engineering, Vol. 928, 2020, 022043. Search in Google Scholar

NEUPAUER, P. – PATER, J.: Study of Ground Heat Exchangers in the Form of Parallel Loops at Various Depths, E3S Web of Conferences, Vol. 44, 2018, 00073. Search in Google Scholar

CUI, Q. – SHI, Y. – ZHANG, Y. – WU, R. – JIAO, Y.: Comparative Study on the Thermal Performance and Economic Efficiency of Vertical and Horizontal Ground Heat Exchangers, Advances in Geo-Energy Research, Vol. 7, No. 1, 2023, pp. 7–19. Search in Google Scholar

LIU, X. – LI, C. – ZHANG, G. – ZHANG, L. – WEI, B.: Numerical Investigation on Energy Efficiency of Heat Pump with Tunnel Lining Ground Heat Exchangers under Building Cooling, Buildings, Vol. 11, 2021, 611. Search in Google Scholar

YERDESH, Y. – AMANZHOLOV, T. – ALIULY, A. – SEITOV, A. – TOLEUKHANOV, A. – MURUGESAN, M. – BOTELLA, O. – FEIDT, M. – WANG, H.S. – TSOY, A. – BELYAYEV, Y.: Experimental and Theoretical Investigations of a Ground Source Heat Pump System for Water and Space Heating Applications in Kazakhstan, Energies, 2022, arXiv:2211.07693. Search in Google Scholar

YOON, S. – LEE, S.R.: Life Cycle Cost Analysis and Smart Operation Mode of Ground Source Heat Pump System, Smart Structures and Systems, Vol. 16, No. 4, 2015, pp. 743–758. Search in Google Scholar

HARRIS, M. – LEE, K.: Reverse Cycle Operation of Geothermal Heat Pumps, Geothermal Resources Council Transactions, Vol. 40, 2016, pp. 327–338. Search in Google Scholar

SALHEIN, K. – KOBUS, C.J. – ZOHDY, M. – ANNEKAA, A.M. – ALHAWSAWI, E.Y. – ALGHENNAI, S.: Heat Transfer Performance Factors in a Vertical Ground Heat Exchanger for a Geothermal Heat Pump System, Energies, Vol. 17, No. 19, 2024, 5003. Search in Google Scholar

TINTI, F. – STRPIC, K. – KASMAEE, S. – FOCACCIA, S. – BEDESCHI, E. – VERDECCHIA, A. – BARBARESI, A. – MACINI, P.: Performance Comparison Between a Typical Very Shallow and an Innovative Configuration of Ground Heat Exchangers, Proceedings of the European Geothermal Congress (EGC 2019), Den Haag, The Netherlands, 2019, 11-14 June 2019. Search in Google Scholar

ABU-HAMDEH, N.H.: Thermal Conductivity of Soils as Affected by Moisture Content, Biosystems Engineering, Vol. 86, 2003, pp. 97–102. Search in Google Scholar

ZHANG, H. – WU, Y.: Nonlinear Influence of Soil Moisture on Ground Heat Transfer, Computers and Geotechnics, Vol. 121, 2020, 103446. Search in Google Scholar

FAROUKI, O.T.: The Thermal Properties of Soils in Cold Regions, Cold Regions Science and Technology, Vol. 5, 1981, pp. 67–75. Search in Google Scholar

KERSTEN, M.S.: Thermal Properties of Soils, Engineering Experiment Station Bulletin No. 28, University of Minnesota, 1949. Search in Google Scholar

LU, S. – HORTON, R. – REN, T.: An Empirical Model for Estimating Soil Thermal Conductivity from Texture, Water Content, and Bulk Density, Soil Science Society of America Journal, Vol. 78, No. 5, 2014, pp. 1432–1441. Search in Google Scholar

VIEIRA, F.P. – GUIMARÃES, S.N.P. – GOMES, J.L.S. – HAMZA, V.M.: Geothermal Resources of the European Continent: A Regional Assessment, International Journal of Terrestrial Heat Flow and Applied Geothermics, Vol. 6, No. 1, 2023, pp. 11-18. ENGLISH, J.M. – ENGLISH, K.L. – DUNPHY, R.B. – BLAKE, S. – WALSH, J. – RAINE, R. – Search in Google Scholar

VAFEAS, N.A. – SALGADO, P.R.: An Overview of Deep Geothermal Energy and Its Potential on the Island of Ireland, First Break, Vol. 41, No. 2, 2023, pp. 33-43. Search in Google Scholar

HU, L. – RIZVI, Z.H. – TOBBER, L. – WUTTKE, F.: Thermal Performance of Three Horizontal Ground Heat Exchanger Systems: Comparison of Linear-Loop, Spiral-Coil, and Slinky-Coil Arrangements, Frontiers in Energy Research, Vol. 11, 2023, Article 1188506. Search in Google Scholar

ZOU, H. – PEI, P. – WANG, C. – HAO, D.: A Numerical Study on Heat Transfer Performances of Horizontal Ground Heat Exchangers in Ground-Source Heat Pumps, PLoS ONE, Vol. 16, No. 5, 2021, e0250583. Search in Google Scholar

CONGEDO, P.M. – LORUSSO, C. – DE GIORGI, M.G. – MARTI, R. – D’AGOSTINO, D.: Horizontal Air-Ground Heat Exchanger Performance and Humidity Simulation by Computational Fluid Dynamic Analysis, Energies, Vol. 9, 2016, 930. Search in Google Scholar

SMITH, J. – LIU, R. – WANG, T.: Efficient Finite Element Modeling of Shallow Geothermal Systems, IEEE Transactions on Thermal Science and Engineering, Vol. 47, No. 3, 2021, pp. 512–523. Search in Google Scholar

ZHANG, L.: Coupled Soil Heat and Moisture Transfer – A Simplified Soil Energy and Hydrologic Model, master’s Thesis, Duke University, 2020. Search in Google Scholar

MOHYLA, M. – HRUBESOVA, E. – MARTINKAUPPI, B. – MÄKIRANTA, A. – TUOMI, V.: Numerical Simulation of the Thermal Response of Seabed Sediments to Geothermal Cycles in Suvilahti, Finland, Renewable Energy, Vol. 221, 2024, 119770. Search in Google Scholar

OBERDORFER, P.: Heat Transport Phenomena in Shallow Geothermal Boreholes - Development of a Numerical Model and a Novel Extension for the Thermal Response Test Method by Applying Oscillating Excitations, PhD Thesis, 2014. Search in Google Scholar

BIGDELOU, P. – POURFAYAZ, F. – NOOROLLAHI, Y.: Investigating the Effect of Soil Type and Moisture on the Performance of a Ground Source Heat Pump System Used for a Greenhouse in Iran, Journal of Thermal Science and Engineering Applications, Vol. 11, No. 1, 2018, 011009. Search in Google Scholar

SERAGELDIN, A.A. – RADWAN, A. – SAKATA, Y. – KATSURA, T. – NAGANO, K.: The Effect of Groundwater Flow on the Thermal Performance of a Novel Borehole Heat Exchanger for Ground Source Heat Pump Systems: Small Scale Experiments and Numerical Simulation, Energies, Vol. 13, No. 6, 2020, 1418. Search in Google Scholar

LI, S. – ZHANG, Y. – WANG, J. – ZHANG, X.: Effect of Soil Moisture Content on Thermal Performance of Ground Source Heat Pump Systems, Energy Reports, Vol. 10, 2023, pp. 3914–3925. Search in Google Scholar

HU, L. – RIZVI, Z.H. – TOBBER, L. – WUTTKE, F.: Thermal Performance of Three Horizontal Ground Heat Exchanger Systems: Comparison of Linear-Loop, Spiral-Coil and Slinky-Coil Arrangements, Frontiers in Energy Research, Vol. 11, 2023, Article 1188506. Search in Google Scholar

RAJEEV, P. – CHAN, D. – KODIKARA, J.: Ground–Atmosphere Interaction Modelling for Long-Term Prediction of Soil Moisture and Temperature, Canadian Geotechnical Journal, Vol. 49, No. 9, 2012, pp. 1015–1032. Search in Google Scholar

RUHIG, R. – RUHIGOVÁ, E.: Effect of Glazed Loggias on the Energy Efficiency of a T08b Prefabricated Dwelling – A Case Study, Slovak Journal of Civil Engineering, Vol. 29, No. 3, 2021, pp. 41-50. Search in Google Scholar

CUI, Q. – SHI, Y. – ZHANG, Y. – WU, R. – JIAO, Y.: Comparative Study on the Thermal Performance and Economic Efficiency of Vertical and Horizontal Ground Heat Exchangers, Advances in Geo-Energy Research, Vol. 7, No. 1, 2023, pp. 7–19. Search in Google Scholar

SANNER, B. – HELLSTRÖM, G. – SPITLER, J. – GEHLIN, S.: Thermal Response Test – Current Status and World-Wide Application, Proceedings of World Geothermal Congress, 2005, pp. 1–9. Search in Google Scholar

MELINE, L.: Geothermal Heat Pumps—Simply Efficient, ASHRAE Transactions, Vol. 125, Part 2, 2019, pp. 568–576. Search in Google Scholar

FOUAD, H.M. – MAHMOUD, A.H. – MOUSSA, R.R.: Effect of a Geothermal Heat Pump System on Cooling Residential Buildings in a Hot, Dry Climate, HBRC Journal, Vol. 19, No. 1, 2023, pp. 483–507. Search in Google Scholar

DE VRIES, D.A.: Thermal Properties of Soils and Energy Balance, Soil Science, Vol. 119, 1975, pp. 122–129. Search in Google Scholar

GAWECKA, K.A. – TABORDA, D.M.G. – POTTS, D.M. – SAILER, E. – CUI, W. – ZDRAVKOVIĆ, L.: Finite-Element Modeling of Heat Transfer in Ground Source Energy Systems with Heat Exchanger Pipes, International Journal of Geomechanics, Vol. 20, Issue 5, 2020, Article 04020046. Search in Google Scholar

HAO, J. – JIA, G. – MA, Z. – ZHANG, Z. – MA, C. – CHENG, C. – JIN, L.: A Review of Geothermal Energy Coupled Hybrid System for Building Heat Supply, Renewable Energy Reviews, Vol. 10, No. 5, 2024, pp. 234–246. Search in Google Scholar

MALACAS, J.D. – CERTEZA, L.V.R. – ALFONSO, B.A. – VALENCIA, C.P.: Heat Transfer Optimization in a Horizontal Helical-Shaped Ground Heat Exchanger Through Response Surface Methodology, IOP Conference Series: Earth and Environmental Science, Vol. 1094, 2022, 012008. Search in Google Scholar

KREMERS, E.: Intelligent Local Energy Management Through Market Mechanisms: Driving the German Energy Transition from the Bottom-Up, 4th Annual CDT Conference in Energy Storage and Its Applications, 2019, University of Southampton, UK. Search in Google Scholar

HE, H. – HE, D. – JIN, J. – SMITS, K.M. – DYCK, M. – WU, Q. – SI, B. – LV, J.: Room for Improvement: A Review and Evaluation of 24 Soil Thermal Conductivity Parameterization Schemes Commonly Used in Land-Surface, Hydrological, and Soil-Vegetation-Atmosphere Transfer Models, Earth-Science Reviews, Vol. 211, 2020, 103419. Search in Google Scholar

BASOK, B. – DAVYDENKO, B. – KOSHLAK, H. – NOVIKOV, V.: Free Convection and Heat Transfer in Porous Ground Massif during Ground Heat Exchanger Operation, Materials (Basel), Vol. 15, No. 14, 2022, 4843. Search in Google Scholar

JAEGER, J.C.: Application of the Theory of Heat Conduction to Geothermal Measurements, Geophysical Monograph Series, Vol. 8, 2013, pp. 7-14. Search in Google Scholar

TAN, K.K. – SAM, T. – JAMALUDIN, H.: The Onset of Transient Convection in Bottom Heated Porous Media, International Journal of Heat and Mass Transfer, Vol. 46, No. 15, 2003, pp. 2857-2873. Search in Google Scholar

HENNICHE, R. – KORICHI, A.: Mixed and Forced Convection Heat Transfer in Baffled Channels: A Brief Review, Journal of Heat and Mass Transfer Research, Vol. 12, No. 1, 2025, pp. 15-28. Search in Google Scholar

GIRAULT, V. – RIVIÈRE, B.: DG Approximation of Coupled Navier–Stokes and Darcy Equations by Beaver–Joseph–Saffman Interface Condition, SIAM Journal on Numerical Analysis, Vol. 46, No. 3, 2008, pp. 1203–1222. Search in Google Scholar

SCHNEIDER, G.E.: An Investigation Into the Heat Loss Characteristics of Buried Pipes, Journal of Heat Transfer, Vol. 107, No. 3, 1985, pp. 696-699. Search in Google Scholar

RIVERA, J.A. – BLUM, P. – BAYER, P.: Ground Energy Balance for Borehole Heat Exchangers: Vertical Fluxes, Groundwater, and Storage, Renewable Energy. Search in Google Scholar

REINHOLDT, L. – KRISTÓFERSSON, J. – ZÜHLSDORF, B. – ELMEGAARD, B. – JENSEN, J. – OMMEN, T. – JØRGENSEN, P. H.: Heat Pump COP, Part 1: Generalized Method for Screening of System Integration Potentials, Refrigeration Science and Technology, 2018, pp. 1207–1213. Search in Google Scholar

WANG, P. – WANG, Y. – GAO, W. – XU, T. – WEI, X. – SHI, C. – QI, Z. – BAI, L.: Uncovering the Efficiency and Performance of Ground-Source Heat Pumps in Cold Regions: A Case Study of a Public Building in Northern China, Buildings, Vol. 13, No. 6, 2023, 1564. Search in Google Scholar

LI, B. – HAN, Z. – BAI, C. – HU, H.: The Influence of Soil Thermal Properties on the Operation Performance of Ground Source Heat Pump Systems, Renewable Energy, Vol. 141, 2019, pp. 903-913. Search in Google Scholar

TELGOZHAYEVA, F. – ARICI, M. – KUNELBAYEV, M. – SHAKEN, Y. et al.: A Mathematical Model of an Automated Control System for Heat Regulation in a Building, WSEAS Transactions on Systems and Control, Vol. 18, 2023, pp. 231-242. Search in Google Scholar

RUSAK, D. – KARPIEL, G. – KUŁAKOWSKI, K.: The Architecture of a Real-Time Control System for Heating Energy Management in the Intelligent Building, Energies, Vol. 14, No. 17, 2021, 5402. Search in Google Scholar

KOOHI-FAYEGH, S. – ROSEN, M.A.: Long-Term Study of Vertical Ground Heat Exchangers with Varying Seasonal Heat Fluxes, Geothermics, Vol. 75, 2018, pp. 15-25. Search in Google Scholar

CUI, W. – GAWECKA, K. – TABORDA, D.M.G. – ZDRAVKOVIC, L. et al.: Time-Step Constraints in Transient Coupled Finite Element Analysis, International Journal for Numerical Methods in Engineering, Vol. 106, No. 12, 2015. Search in Google Scholar

LORANTY, M.M. – ABBOTT, B.W. – BLOK, D. – et al.: Changing Ecosystem Influences on Soil Thermal Regimes in Northern High-Latitude Permafrost Regions, Biogeosciences, Vol. 15, 2018, pp. 5287–5313. Search in Google Scholar

SLAVKOV, J. – TOMAJKOVÁ, D. – BRČEK, M. – MIČA, L.: Energy Potential of the Bratislava Neogene, Civil and Environmental Engineering, Vol. 20, Issue 2, 2024, pp. 1055–1064, doi: 10.2478/cee-2024-0076. Search in Google Scholar

WAHEED, M. – ASMAEL, N.: Assessment of the Numerical Behavior of Remolded and Undisturbed Clayey Soil, Civil and Environmental Engineering, Vol. 20, Issue 2, 2024, pp. 742–753, doi: 10.2478/cee-2024-0056. Search in Google Scholar

MOSALLAEI, A. – MAHLER, A.: Calibration of Hypoplastic Parameters for Danube Sand, Slovak Journal of Civil Engineering, Vol. 32, No. 1, 2024, pp. 36-45. Search in Google Scholar

BARTOLINI, N. – CASASSO, A. – BIANCO, C. – SETHI, R.: Environmental and Economic Impact of the Antifreeze Agents in Geothermal Heat Exchangers, Energies, Vol. 13, No. 21, 2020, 5653. Search in Google Scholar

SELVAM, C. – MOHAN LAL, D. – SIVASANKARAN HARISH, H.: Thermophysical Properties of Ethylene Glycol-Water Mixture Containing Silver Nanoparticles, Journal of Mechanical Science and Technology, Vol. 30, No. 3, 2016, pp. 1271–1279. Search in Google Scholar

SAID, Z. – JAMEI, M. – SYAM SUNDAR, L. – et al.: Thermophysical Properties of Water, Water and Ethylene Glycol Mixture-Based Nanodiamond+Fe3O4 Hybrid Nanofluids: An Experimental Assessment and Application of Data-Driven Approaches, Journal of Molecular Liquids, Vol. 347, 2021, 117944. Search in Google Scholar

BANISHARIF, A. – AGHAJANI, M. – VAN VAERENBERGH, S. – ESTELLÉ, P. – RASHIDI, A.: Thermophysical Properties of Water Ethylene Glycol (WEG) Mixture-Based Fe3O4 Nanofluids at Low Concentration and Temperature, Journal of Molecular Liquids, Vol. 302, 2020, 112606. Search in Google Scholar