Experimental investigation on the ground heat exchanger with air fluid

  • U. DurmazEmail author
  • O. Yalcinkaya
Original Paper


The pollution caused by overuse of fossil fuels leads to global warming, which is a serious threat to the world. With the continuous increase in energy demand, renewable energy resources have become more important in recent years in order to meet the rapidly decreasing energy resources and to meet the increasing energy demand. In order to use the available resources and alternative energy systems more efficiently, it has become a necessity to develop systems, which are affordable, open to the technological developments, easy to maintain and compatible with the legal restrictions. Although there are some studies on humidified ground-source heat exchangers in the literature in recent years, there is not sufficient number of study on this subject. In addition, available studies are generally focused on the dry soil applications. In this study, cooling experiments of the energy laboratory at the campus of Sakarya University were performed using the wet ground-source heat exchanger, and air as the process fluid. For this purpose, ground-source heat exchanger pipes are placed in an artificial pool of 80 m2 area and 2.5 m depth. Experiments, which were conducted during the summer months and 9–10 kW heat energy, were transferred to the soil. The study showed that energy costs for cooling could be decreased by this method. If the proposed model is integrated to the structures during the installation stage, it is predicted that air conditioning costs can be reduced.


Energy efficiency Heat exchanger Renewable energy sources Wet ground 



This work was supported by Research Fund of the Sakarya University. Project Number: 2015-01-06-002.


  1. Adedayo K, Ojo J, Okoroafor I (2017) Thermal diffusivity variations at ministry of agriculture Akure South, Ondo State, South-West Nigeria. Phys Sci Int J 14:1–10. CrossRefGoogle Scholar
  2. Assmann A, Cemal Benim A, Gül F et al (2012) Pulsatile extracorporeal circulation during on-pump cardiac surgery enhances aortic wall shear stress. J Biomech 45:156–163. CrossRefGoogle Scholar
  3. Benim AC (1988) A finite element solution of radiative heat transfer in participating media utilizing the moment method. Comput Methods Appl Mech Eng 67:1–14CrossRefGoogle Scholar
  4. Benim AC, Epple B, Krohmer B (2005) Modelling of pulverized coal combustion by a Eulerian–Eulerian two-phase flow formulation. Prog Comput Fluid Dyn 5:345–361. CrossRefGoogle Scholar
  5. Benim AC, Escuider MP, Nahavandi A et al (2010) Experimental and numerical investigation of isothermal flow in an idealized swirl combustor. Int J Numer Methods Heat Fluid Flow 20:348–370CrossRefGoogle Scholar
  6. Çengel Yunus A (2003) Heat transfer a practical approach. 2nd edn. McGraw-Hill, New YorkGoogle Scholar
  7. Chattopadhyay H, Benim AC (2011) Turbulent heat transfer over a moving surface due to impinging slot jets. J Heat Transf 133:5. CrossRefGoogle Scholar
  8. Durmaz U, Ozdemir M (2018) An experimental study on the soil-based natural cooling. Int J Environ Sci Technol. Google Scholar
  9. Ebling DG, Krumm A, Pfeiffelmann B et al (2016) Development of a system for thermoelectric heat recovery from stationary industrial processes. J Electron Mater 45:3433–3439. CrossRefGoogle Scholar
  10. Er Z (2016) A study of evaluation of solar energy simulation and modeling systems. Acta Phys Pol A 130:72–77. CrossRefGoogle Scholar
  11. Günay O, Saç MM, Içhedef M, Taşköprü C (2018a) Natural radioactivity analysis of soil samples from Ganos fault (GF). Int J Environ Sci Technol. Google Scholar
  12. Günay O, Saç MM, İçhedef M, Taşköprü C (2018b) Soil gas radon concentrations along the Ganos Fault (GF). Arab J Geosci 11:1–5. CrossRefGoogle Scholar
  13. Kahveci EE, Taymaz I (2018) Assessment of single-serpentine PEM fuel cell model developed by computational fluid dynamics. Fuel 217:51–58. CrossRefGoogle Scholar
  14. Kayihan SA (2012) Hesaplamalı Isı-Kütle Geçişi ile Yoğuşma ve Buharlaşmanın Key Words, pp 37–42Google Scholar
  15. Kline SJ, McClintock FA (1953) Describing uncertainties in single-sample experiments. Mech Eng 75:3–8Google Scholar
  16. Kulalı F, Akkurt İ, Özgür N, Sezer M (2018) The correlation of the seismic activities and radon concentration in soil gas. Arab J Geosci. Google Scholar
  17. Kumar Agrawal K, Yadav T, Misra R, Das Agrawal G (2019) Effect of soil moisture contents on thermal performance of earth-air-pipe heat exchanger for winter heating in arid climate: in situ measurement. Geothermics 77:12–23. CrossRefGoogle Scholar
  18. Maqableh AM, Khadrawi AF, Al-Nimr MA et al (2011) Heat transfer characteristics of parallel and counter flow micro-channel heat exchangers with varying wall resistance. Prog Comput Fluid Dyn 11:318–328. CrossRefGoogle Scholar
  19. Mihalakakou G, Santamouris M, Asimakopoulos D, Tselepidaki I (1995) Parametric prediction of the buried pipes cooling potential for passive cooling applications. Sol Energy 55:163–173. CrossRefGoogle Scholar
  20. Moffat RJ (1988) Describing the uncertainties in experimental results. Exp Therm Fluid Sci 1:3–17. CrossRefGoogle Scholar
  21. Nam Y, Chae H-B (2014) Numerical simulation for the optimum design of ground source heat pump system using building foundation as horizontal heat exchanger. Energy 73:933–942. CrossRefGoogle Scholar
  22. Oclon P, Lopata S, Nowak M, Benim AC (2015) Numerical study on the effect of inner tube fouling on the thermal performance of high-temperature fin-and-tube heat exchanger. Prog Comput Fluid Dyn 15:290–306CrossRefGoogle Scholar
  23. Ozsoy N, Ozsoy M, Mimaroglu A (2017) Mechanical and tribological behaviour of chopped E-glass fiber-reinforced epoxy composite materials. Acta Phys Pol A 132:852–856. CrossRefGoogle Scholar
  24. Parlak Z, Engin T (2012) Time-dependent CFD and quasi-static analysis of magnetorheological fluid dampers with experimental validation. Int J Mech Sci 64:22–31. CrossRefGoogle Scholar
  25. Song Y, Yao Y, Na W (2006) Impacts of soil and pipe thermal conductivity on performance of horizontal pipe in a ground-source heat pump. In: Proceedings of the sixth international conference for enhanced building operations, pp 2–7Google Scholar
  26. Su W, Liu Y, Pi J et al (2018) Effect of water salinity and rock components on wettability alteration during low-salinity water flooding in carbonate rocks. Arab J Geosci. Google Scholar
  27. Sweet ML, McLeskey JT (2012) Numerical simulation of underground Seasonal Solar Thermal Energy Storage (SSTES) for a single family dwelling using TRNSYS. Sol Energy 86:289–300. CrossRefGoogle Scholar
  28. Wang Z, Wang F, Ma Z et al (2016) Research of heat and moisture transfer influence on the characteristics of the ground heat pump exchangers in unsaturated soil. Energy Build 130:140–149. CrossRefGoogle Scholar
  29. Yigit C, Coskun G, Buyukkaya E et al (2015) CFD modeling of carbon combustion and electrode radiation in an electric arc furnace. Appl Therm Eng. Google Scholar

Copyright information

© Islamic Azad University (IAU) 2019

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentSakarya UniversitySakaryaTurkey

Personalised recommendations