Thermal Analysis of a Generic Earth-to-Air Heat Exchanger Coupled with a Room during the Summer Season in a Desert Climate
Publication: Journal of Energy Engineering
Volume 148, Issue 2
Abstract
This work reports a numerical study of the thermal performance of a representative room coupled with a generic earth–air heat exchanger (EAHE) in a city with a desert climate. The EAHE system was designed/selected based on previous results reported in the literature. A detailed validation was made by comparing it with experimental and numerical data reported in the literature under similar climatic conditions. A study was carried out to determine the appropriate air velocity inlet of the EAHE, based on the velocity that would provide the best cooling in the room. It also helped us to select the best air inlet and outlet configuration in the cooled space. The transient cooling capacity of an EAHE system coupled with a representative room was investigated under three different cases. It was found that the most favorable case was when the entering heat flux is by one vertical wall only. In this case, the average temperature in the room was less than the comfort temperature. Also, the flow patterns, temperature fields, heat transfer coefficients, and heat fluxes are reported for the different room configurations. The studied EAHE-Room decreases the ambient temperature by with a maximum of 11.3 K (Roof Case), with a maximum of 12.9 K (Wall Case), and with a maximum of 11 K (Mixed Case). The average coefficient of performance (COP) is compared for the situations analyzed (COP varied between 210 and 277). It was found that the COP of the EAHE is affected by the thermal load of the ventilated room.
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Data Availability Statement
All data, models, and/or code that support the findings of this study are available from the corresponding author upon reasonable request.
References
Agrawal, K. K., R. Misra, G. D. Agrawal, M. Bhardwaj, and D. K. Jamuwa. 2019. “The state of art on the applications, technology integration, and latest research trends of earth-air-heat exchanger system.” Geothermics 82 (Nov): 34–50. https://doi.org/10.1016/j.geothermics.2019.05.011.
Ahmed, S. F., M. T. O. Amanullah, M. M. K. Khan, M. G. Rasul, and N. M. S. Hassan. 2016. “Parametric study on thermal performance of horizontal earth pipe cooling system in summer.” Energy Convers. Manage. 114 (Apr): 324–337. https://doi.org/10.1016/j.enconman.2016.01.061.
Allard, F., and C. Ghiaus. 2005. “Natural ventilation in the urban environment: Assessment and design buildings.” In Energy and solar technology series. London: Routledge.
ANSYS. 2013. ANSYS fluent theory guide. Canonsburg, PA: ANSYS.
Artmann, N., H. Manz, and P. Heiselberg. 2007. “Climatic potential for passive cooling of buildings by night-time ventilation in Europe.” Appl. Energy 84 (2): 187–201. https://doi.org/10.1016/j.apenergy.2006.05.004.
ASHRAE. 1997. Handbook of fundamentals, American society of heating, refrigerating and air conditioning engineers. Atlanta: ASHRAE.
ASHRAE. 2000. Handbook of fundamentals, American society of heating, refrigerating and air conditioning engineers. Atlanta: ASHRAE.
Bansal, V., R. Misra, G. D. Agrawal, and J. Mathur. 2013. “Transient effect of soil thermal conductivity and duration of operation on performance of earth air tunnel heat exchanger.” Appl. Energy 103 (Mar): 1–11. https://doi.org/10.1016/j.apenergy.2012.10.014.
Belatrache, D., S. Bentouba, and M. Bourouis. 2017. “Numerical analysis of earth air heat exchangers at operating conditions in arid climates.” Int. J. Hydrogen Energy 42 (13): 8898–8904. https://doi.org/10.1016/j.ijhydene.2016.08.221.
Benhammou, M., B. Draoui, M. Zerrouki, and Y. Marif. 2015. “Performance analysis of an earth-to-air heat exchanger assisted by a wind tower for passive cooling of buildings in arid and hot climate.” Energy Convers. Manage. 91 (Feb): 1–11. https://doi.org/10.1016/j.enconman.2014.11.042.
Ben Jmaa Derbel, H., and O. Kanoun. 2010. “Investigation of the ground thermal potential in tunisia focused towards heating and cooling applications.” Appl. Therm. Eng. 30 (10): 1091–1100. https://doi.org/10.1016/j.applthermaleng.2010.01.022.
Borbón, A. C., R. E. Cabanillas, and J. B. Pérez. 2010. “Modelación y Simulación de la Transferencia de Calor en Muros de Bloque de Concreto Hueco.” Información Tecnológica 21 (3): 27–38. https://doi.org/10.4067/S0718-07642010000300004.
Bordoloi, N., A. Sharma, H. Nautiyal, and V. Goel. 2018. “An intense review on the latest advancements of earth air heat exchangers.” Renewable Sustainable Energy Rev. 89 (Jun): 261–280. https://doi.org/10.1016/j.rser.2018.03.056.
Chiesa, G., M. Simonetti, and M. Grosso. 2014. “A 3-field earth-heat-exchange system for a school building in Imola, Italy: Monitoring results.” Renewable Energy 62 (Feb): 563–570. https://doi.org/10.1016/j.renene.2013.08.020.
Darkwa, J., G. Kokogiannakis, C. L. Magadzire, and K. Yuan. 2011. “Theoretical and practical evaluation of an earth-tube (E-tube) ventilation system.” Energy Build. 43 (2–3): 728–736. https://doi.org/10.1016/j.enbuild.2010.11.018.
da Silva, B. R., J. Vaz, L. A. Oliveira-Rocha, E. Domingues dos Santos, and A. Isoldi-Liércio. 2013. “A new computational modeling to predict the behavior of earth air heat exchangers.” Energy Build. 64 (Sep): 395–402. https://doi.org/10.1016/j.enbuild.2013.05.032.
Díaz-Hernández, H. P., E. V. Macias-Melo, K. M. Aguilar-Castro, I. Hernández-Pérez, J. Xamán, J. Serrano-Arellano, and L. M. López-Manrique. 2020. “Experimental study of an earth to air heat exchanger (EAHE) for warm humid climatic conditions.” Geothermics 84 (Mar): 101741. https://doi.org/10.1016/j.geothermics.2019.101741.
Ghosal, M. K., and G. N. Tiwari. 2006. “Modeling and parametric studies for thermal performance of an earth to air heat exchanger integrated with a greenhouse.” Energy Convers. Manage. 47 (13–14): 1779–1798. https://doi.org/10.1016/j.enconman.2005.10.001.
Giacomo, C., and A. Zajch. 2020. “Contrasting climate-based approaches and building simulations for the investigation of earth-to-air heat exchanger (EAHE) cooling sensitivity to building dimensions and future climate scenarios in North America.” Energy Build. 227 (Nov): 110410. https://doi.org/10.1016/j.enbuild.2020.110410.
Hadjadj, A., A. Atia, B. Ben haoua, M. Arıcı, N. Naili, and A. Kaddour. 2021. “Energy and exergy analyses of a helicoidal water to air geothermal heat exchanger for arid regions.” Energy Sources Part A 16 (Aug): 1556–7036. https://doi.org/10.1080/15567036.2021.1970859.
Incropera, F. P., and D. P. DeWitt. 1999. Fundamentos de transferencia de calor. New York: Prentice Hall.
Kepes-Rodrigues, M., R. B. da Silva, J. Vaz, L. A. Oliveira-Rocha, E. Domingues dos Santos, and L. A. Isoldi. 2015. “Numerical investigation about the improvement of the thermal potential of an earth-air heat exchanger (EAHE) employing the constructal design method.” Renewable Energy 80 (Aug): 538–551. https://doi.org/10.1016/j.renene.2015.02.041.
Khabbaz, M., B. Benhamou, K. Limam, P. Hollmuller, H. Hamdi, and A. Bennouna. 2016. “Experimental and numerical study of an earth-to-air heat exchanger for air cooling in a residential building in hot semi-arid climate.” Energy Build. 125 (Aug): 109–121. https://doi.org/10.1016/j.enbuild.2016.04.071.
Launder, B. E., and D. B. Spalding. 1972. Lectures in mathematical models of turbulence. London: Academic Press.
Li, D. H. W., L. Yang, and J. C. Lam. 2013. “Zero energy buildings and sustainable development implications—A review.” Energy 54 (Jun): 1–10. https://doi.org/10.1016/j.energy.2013.01.070.
Li, H., L. Ni, G. Liu, and Y. Yao. 2019. “Performance evaluation of earth to air heat exchange (EAHE) used for indoor ventilation during winter in severe cold regions.” Appl. Therm. Eng. 160 (Sep): 114111. https://doi.org/10.1016/j.applthermaleng.2019.114111.
Liu, Z., W. Li, Y. Chen, Y. Luo, and L. Zhang. 2019. “Review of energy conservation technologies for fresh air supply in zero energy buildings.” Appl. Therm. Eng. 148 (Feb): 544–556. https://doi.org/10.1016/j.applthermaleng.2018.11.085.
Mathur, A., S. Priyam, G. Agrawal, and J. Mathur. 2017. “Comparative study of straight and spiral earth air tunnel heat exchanger system operated in cooling and heating modes.” Renewable Energy 108 (Aug): 474–487. https://doi.org/10.1016/j.renene.2017.03.001.
Mathur, A., A. K. Surana, P. Verma, S. Mathur, G. Agrawal, and J. Mathur. 2015. “Investigation of soil thermal saturation and recovery under intermittent and continuous operation of EATHE.” Energy Build. 109 (Dec): 291–303. https://doi.org/10.1016/j.enbuild.2015.10.010.
Maytorena, V. M., S. Moreno, and J. F. Hinojosa. 2021. “Effect of operation modes on the thermal performance of EAHE systems with and without PCM in summer weather conditions.” Energy Build. 250 (Nov): 111278. https://doi.org/10.1016/j.enbuild.2021.111278.
Minaei, A., and H. Safikhani. 2021. “A new transient analytical model for heat transfer of earth-to-air heat exchangers.” J. Build. Eng. 33 (Jan): 101560. https://doi.org/10.1016/j.jobe.2020.101560.
Misra, R., V. Bansal, G. Das Agrawal, J. Mathur, and T. K. Aseri. 2013. “CFD analysis based parametric study of derating factor for earth air tunnel heat exchanger.” Appl. Energy 103 (Mar): 266–277. https://doi.org/10.1016/j.apenergy.2012.09.041.
Ozgener, O., and L. Ozgener. 2010. “Exergetic assessment of EAHEs for building heating in Turkey: A greenhouse case study.” Energy Policy 38 (9): 5141–5150. https://doi.org/10.1016/j.enpol.2010.04.047.
Peretti, C., A. Zarrella, M. De Carli, and R. Zecchin. 2013. “The design and environmental evaluation of earth-to-air heat exchangers (EAHE). A literature review.” Renewable Sustainable Energy Rev. 28 (Dec): 107–116. https://doi.org/10.1016/j.rser.2013.07.057.
Pfafferott, J. N. 2003. “Evaluation of earth-to-air heat exchangers with a standardised method to calculate energy efficiency.” Energy Build. 35 (10): 971–983. https://doi.org/10.1016/S0378-7788(03)00055-0.
Pouranian, F., H. Akbari, and S. M. Hosseinalipour. 2021. “Performance assessment of solar chimney coupled with earth-to-air heat exchanger: A passive alternative for an indoor swimming pool ventilation in hot-arid climate.” Appl. Energy 299 (Oct): 117201. https://doi.org/10.1016/j.apenergy.2021.117201.
Rodrigues, M. K., F. S. Coswig, K. R. Camargo, L. A. Isoldi, R. S. Brum, J. V. A. Ramalho, J. Vaz, L. A. O. Rocha, and E. D. dos Santos. 2018. “Thermal performance simulations of earth-air heat exchangers for different soils of a coastal city using in-situ data.” Sustainable Energy Technol. Assess. 30 (Dec): 224–229. https://doi.org/10.1016/j.seta.2018.10.003.
Rodríguez-Vázquez, M., J. Xamán, Y. Chávez, I. Hernández-Pérez, and E. Simá. 2020. “Thermal potential of a geothermal earth-to-air heat exchanger in six climatic conditions of México.” Mech. Ind. 21 (3): 308. https://doi.org/10.1051/meca/2020016.
Rosa, N., N. Soares, J. J. Costa, P. Santos, and H. Gervásio. 2020. “Assessment of an earth-air heat exchanger (EAHE) system for residential buildings in warm-summer Mediterranean climate.” Sustainable Energy Technol. Assess. 38 (Apr): 100649. https://doi.org/10.1016/j.seta.2020.100649.
Xamán, J., I. Hernández-López, R. Alvarado-Juárez, I. Hernández-Pérez, G. Álvarez, and Y. Chávez. 2015. “Pseudo transient numerical study of an earth-to-air heat exchanger for different climates of Mexico.” Energy Build. 99 (Jul): 273–283. https://doi.org/10.1016/j.enbuild.2015.04.041.
Xamán, J., I. Hernández-Pérez, J. Arce, G. Álvarez, L. Ramírez-Dávila, and F. Noh-Pat. 2014. “Numerical study of earth-to-air heat exchanger: The effect of thermal insulation.” Energy Build. 85 (Dec): 356–361. https://doi.org/10.1016/j.enbuild.2014.09.064.
Yang, D., Y. Guo, and J. Zhang. 2016. “Evaluation of the thermal performance of an earth-to-air heat exchanger (EAHE) in a harmonic thermal environment.” Energy Convers. Manage. 109 (Feb): 184–194. https://doi.org/10.1016/j.enconman.2015.11.050.
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Received: Aug 18, 2021
Accepted: Nov 11, 2021
Published online: Jan 3, 2022
Published in print: Apr 1, 2022
Discussion open until: Jun 3, 2022
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