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Numerical study on ground-air heat exchanger performance in a hot climate under different inlet air temperatures

Year 2023, Volume: 7 Issue: 4, 315 - 326, 31.12.2023
https://doi.org/10.30521/jes.1097439

Abstract

The present study includes a numerical assessment of air-cooling by EAHE (i.e., Earth to Air Heat Exchanger) on hot days in Baghdad city. EAHE consists of pipes buried in a certain depth in the soil, where the temperature is moderate throughout the year. The effect of different input air temperatures at day and night on the EAHE performance has been studied, taking into account the change in soil temperature due to continuous passing of hot air causing an increase in soil temperature and lowers its cooling capacity. In Baghdad (i.e. capital of Iraq), the hot days are extended from mid-April to mid-October. During these months, the weather is characterized by the high solar intensity at day with a daily range exceeding 15 ͦ C. Ambient air temperature varies greatly through spring, summer, and autumn. The various ambient temperatures recorded and documented for Baghdad are used as the inlet temperatures of EAHE in the present study. Besides, the pressure drops and power losses through pipes have been studied, too. The simulated results indicates that the use of EAHE gives the accepted outlet temperature for space cooling (about 26 ℃) on hot days of spring and autumn. In addition, the decrease of ambient temperature less than soil temperature at night leads to lessening the heat storage in soil.

References

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  • [5] Mihalakakou G, Lewis JO, Santamouris M. The influence of different ground covers on the heating potential of earth-to-air heat exchangers. Renew Energy. 1996 Jan 1;7(1):33–46.
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  • [15] Wu H, Wang S, Zhu D. Modelling and evaluation of cooling capacity of earth–air–pipe systems. Energy Convers Manag. 2007 May 1;48(5):1462–71.
  • [16] Misra R, Bansal V, Agrawal G Das, Mathur J, Aseri TK. CFD analysis based parametric study of derating factor for Earth Air Tunnel Heat Exchanger. Appl Energy. 2013;103:266–77.
  • [17] Niu F, Yu Y, Yu D, Li H. Investigation on soil thermal saturation and recovery of an earth to air heat exchanger under different operation strategies. Appl Therm Eng. 2015;77:90–100.
  • [18] Laknizi A, Mahdaoui M, Anoune K, Bakhouya M, Abdellah A Ben, Oussous H. Parametric study and energy performance of an earth-air heat exchanger for a poultry house in Morocco. Vol. 8, International Journal of Renewable Energy Research. 2018. p. 2057–74.
  • [19] Kumar Verma M, Bansal V, Bihari Rana K. Development of Passive Energy Source As Earth Air Pipe Heat Exchangers (Eaphe) System -a Review. J Therm Eng. 2020 Oct 1;6(5):651–76.
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  • [21] Mirianhosseinabadi S, Cho S, Kang EC, Lee EJ. Simulation modeling of Earth-To-Air Heat Exchanger (buried pipe) for the performance analysis of a School Building In Mid-Atlantic region. 2014 ASHRAE/IBPSA-USA Build Simul Conf. 2014;378–85.
  • [22] Holman, J.P. Heat Transfer. 10th Edition, McGraw-Hill, New York. (2009).
  • [23] Athieniti AK, Santamouris M. Thermal analysis and design of passive solar buildings. Therm Anal Des Passiv Sol Build. 2013;1–288.
  • [24] Singh SP. Optimization of earth-air tunnel system for space cooling. Energy Convers Manag. 1994 Aug 1;35(8):721–5.
  • [25] Lemmon EW, Jacobsen RT. Viscosity and thermal conductivity equations for nitrogen, oxygen, argon, and air. Int J Thermophys. 2004;25(1):21–69.
  • [26] Cengel, Y.A. and Cimbala, J.M. (2014) Fluid Mechanics. Fundamentals and Applications. 3rd Edition. McGraw-Hill, New York.
Year 2023, Volume: 7 Issue: 4, 315 - 326, 31.12.2023
https://doi.org/10.30521/jes.1097439

Abstract

References

  • [1] Gooroochurn, M., Mungur, M., Shamachurn H., Surnam, B. Y. R., Mandarkhan, F., & Bhoodoo, D., Investigation of the performance of ground-coupled heat exchanger technology for tempering air. Journal of Energy Systems 2022; 6(2): 309-321, DOI: 10.30521/jes.1058233
  • [2] Lattieff FA, Atiya MA, Lateef RA, Dulaimi A, Jweeg MJ, Abed AM, Mahdi JM and Talebizadehsardari P (2022), Thermal analysis of horizontal earth-air heat exchangers in a subtropical climate: An experimental study. Front. Built Environ. 8:981946. doi: 10.3389/fbuil.2022.981946.
  • [3] Sehli A, Hasni A, Tamali M. The potential of earth-air heat exchangers for low energy cooling of buildings in South Algeria. Energy Procedia. 2012;18:496–506.
  • [4] Mihalakakou G, Santamouris M, Asimakopoulos D. On the cooling potential of earth to air heat exchangers. Energy Convers Manag. 1994 May 1;35(5):395–402.
  • [5] Mihalakakou G, Lewis JO, Santamouris M. The influence of different ground covers on the heating potential of earth-to-air heat exchangers. Renew Energy. 1996 Jan 1;7(1):33–46.
  • [6] Ahmed SF, Amanullah MTO, Khan MMK, Rasul MG, Hassan NMS. Parametric study on thermal performance of horizontal earth pipe cooling system in summer. Energy Convers Manag. 2016 Apr 15;114:324–37.
  • [7] Rouag A, Benchabane A, Mehdid CE. Thermal design of Earth-to-Air Heat Exchanger. Part I a new transient semi-analytical model for determining soil temperature. J Clean Prod. 2018 May 1;182:538–44.
  • [8] Mehdid, C.E.; Benchabane, A.; Rouag, A.; Moummi, N.; Melhegueg, M.A.; Moummi, A.; Benabdi, M.L.; Brima, A. Thermal design of Earth-to-air heat exchanger. Part II a new transient semi-analytical model and experimental validation for estimating air temperature. J. Clean. Prod. 2018, 198, 1536–1544..
  • [9] Krarti M, Kreider JF. Analytical model for heat transfer in an underground air tunnel. Energy Convers Manag. 1996 Oct 1;37(10):1561–74.
  • [10] De Paepe M, Janssens A. Thermo-hydraulic design of earth-air heat exchangers. Energy Build. 2003 May;35(4):389–97.
  • [11] Hollmuller P. Analytical characterisation of amplitude-dampening and phase-shifting in air/soil heat-exchangers. Int J Heat Mass Transf. 2003;46(22):4303–17.
  • [12] Badescu V. Simple and accurate model for the ground heat exchanger of a passive house. Renew Energy. 2007 Apr;32(5):845–55.
  • [13] Vaz J, Sattler MA, Dos Santos ED, Isoldi LA. Experimental and numerical analysis of an earth-air heat exchanger. Energy Build. 2011 Sep;43(9):2476–82.
  • [14] Aslam Bhutta MM, Hayat N, Bashir MH, Khan AR, Ahmad KN, Khan S. CFD applications in various heat exchangers design: A review. Appl Therm Eng. 2012;32(1):1–12.
  • [15] Wu H, Wang S, Zhu D. Modelling and evaluation of cooling capacity of earth–air–pipe systems. Energy Convers Manag. 2007 May 1;48(5):1462–71.
  • [16] Misra R, Bansal V, Agrawal G Das, Mathur J, Aseri TK. CFD analysis based parametric study of derating factor for Earth Air Tunnel Heat Exchanger. Appl Energy. 2013;103:266–77.
  • [17] Niu F, Yu Y, Yu D, Li H. Investigation on soil thermal saturation and recovery of an earth to air heat exchanger under different operation strategies. Appl Therm Eng. 2015;77:90–100.
  • [18] Laknizi A, Mahdaoui M, Anoune K, Bakhouya M, Abdellah A Ben, Oussous H. Parametric study and energy performance of an earth-air heat exchanger for a poultry house in Morocco. Vol. 8, International Journal of Renewable Energy Research. 2018. p. 2057–74.
  • [19] Kumar Verma M, Bansal V, Bihari Rana K. Development of Passive Energy Source As Earth Air Pipe Heat Exchangers (Eaphe) System -a Review. J Therm Eng. 2020 Oct 1;6(5):651–76.
  • [20] Ahmed ES, Hassan AS. The Impact of the Extreme Air Temperatures on the Characteristics of Iraq Weather Iraqi Journal of Science, 2018, Vol. 59, No.2C, pp: 1139-1145 DOI:10.24996/ijs.2018.59.2C.19.
  • [21] Mirianhosseinabadi S, Cho S, Kang EC, Lee EJ. Simulation modeling of Earth-To-Air Heat Exchanger (buried pipe) for the performance analysis of a School Building In Mid-Atlantic region. 2014 ASHRAE/IBPSA-USA Build Simul Conf. 2014;378–85.
  • [22] Holman, J.P. Heat Transfer. 10th Edition, McGraw-Hill, New York. (2009).
  • [23] Athieniti AK, Santamouris M. Thermal analysis and design of passive solar buildings. Therm Anal Des Passiv Sol Build. 2013;1–288.
  • [24] Singh SP. Optimization of earth-air tunnel system for space cooling. Energy Convers Manag. 1994 Aug 1;35(8):721–5.
  • [25] Lemmon EW, Jacobsen RT. Viscosity and thermal conductivity equations for nitrogen, oxygen, argon, and air. Int J Thermophys. 2004;25(1):21–69.
  • [26] Cengel, Y.A. and Cimbala, J.M. (2014) Fluid Mechanics. Fundamentals and Applications. 3rd Edition. McGraw-Hill, New York.
There are 26 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Research Articles
Authors

Ali Hussien 0000-0002-2263-486X

Early Pub Date December 12, 2023
Publication Date December 31, 2023
Acceptance Date August 15, 2023
Published in Issue Year 2023 Volume: 7 Issue: 4

Cite

Vancouver Hussien A. Numerical study on ground-air heat exchanger performance in a hot climate under different inlet air temperatures. Journal of Energy Systems. 2023;7(4):315-26.

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