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Simulation of dynamic interactions of the earth–air heat exchanger with soil and atmosphere for preheating of ventilation air

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  • Gan, Guohui

Abstract

Earth–air tunnel ventilation is an energy efficient means of preheating and cooling of supply air to a building. Due to changing soil and atmospheric conditions and the consequent changes in heating and cooling loads of a building during operation, an earth–air heat exchanger interacts with the environments and the performance varies with the conditions. A computer program has been developed for modelling of coupled heat and moisture transfer in soil and for simulation of the thermal performance of an earth–air heat exchanger for building ventilation, taking account of dynamic variations of climatic, load and soil conditions. The importance of dynamic interactions between the three media – heat exchanger, soil and atmosphere – is illustrated from the comparison of the heat transfer rates and supply air temperature through the heat exchanger under continuous and intermittent operation in heating seasons. It is shown that neglecting the interactions between any two or all three media would significantly over or under predict the heat transfer rate and air temperature. Neglecting the interactions between the heat exchanger, soil and ventilating air would over predict the thermal performance of an earth–air heat exchanger whereas neglecting the interactions between the soil surface and atmosphere would fail to produce reliable data for long term operational performance of the earth–air heat exchanger installed in shallow ground. The level of over-prediction could be larger for intermittent operation than for continuous operation.

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  • Gan, Guohui, 2015. "Simulation of dynamic interactions of the earth–air heat exchanger with soil and atmosphere for preheating of ventilation air," Applied Energy, Elsevier, vol. 158(C), pages 118-132.
  • Handle: RePEc:eee:appene:v:158:y:2015:i:c:p:118-132
    DOI: 10.1016/j.apenergy.2015.08.081
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    References listed on IDEAS

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    Cited by:

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    5. Cuny, Mathias & Lin, Jian & Siroux, Monica & Fond, Christophe, 2020. "Influence of rainfall events on the energy performance of an earth-air heat exchanger embedded in a multilayered soil," Renewable Energy, Elsevier, vol. 147(P2), pages 2664-2675.
    6. Agrawal, Kamal Kumar & Misra, Rohit & Yadav, Tejpal & Agrawal, Ghanshyam Das & Jamuwa, Doraj Kamal, 2018. "Experimental study to investigate the effect of water impregnation on thermal performance of earth air tunnel heat exchanger for summer cooling in hot and arid climate," Renewable Energy, Elsevier, vol. 120(C), pages 255-265.
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    9. Amanowicz, Łukasz & Wojtkowiak, Janusz, 2020. "Approximated flow characteristics of multi-pipe earth-to-air heat exchangers for thermal analysis under variable airflow conditions," Renewable Energy, Elsevier, vol. 158(C), pages 585-597.
    10. Bordoloi, Namrata & Sharma, Aashish & Nautiyal, Himanshu & Goel, Varun, 2018. "An intense review on the latest advancements of Earth Air Heat Exchangers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 89(C), pages 261-280.
    11. Selamat, Salsuwanda & Miyara, Akio & Kariya, Keishi, 2016. "Numerical study of horizontal ground heat exchangers for design optimization," Renewable Energy, Elsevier, vol. 95(C), pages 561-573.
    12. Mihalakakou, Giouli & Souliotis, Manolis & Papadaki, Maria & Halkos, George & Paravantis, John & Makridis, Sofoklis & Papaefthimiou, Spiros, 2022. "Applications of earth-to-air heat exchangers: A holistic review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 155(C).
    13. Leandra Vanbaelinghem & Andrea Costantino & Florian Grassauer & Nathan Pelletier, 2024. "Alternative Heating, Ventilation, and Air Conditioning (HVAC) System Considerations for Reducing Energy Use and Emissions in Egg Industries in Temperate and Continental Climates: A Systematic Review o," Sustainability, MDPI, vol. 16(12), pages 1-35, June.
    14. Liu, Zhengxuan & Yu, Zhun (Jerry) & Yang, Tingting & Roccamena, Letizia & Sun, Pengcheng & Li, Shuisheng & Zhang, Guoqiang & El Mankibi, Mohamed, 2019. "Numerical modeling and parametric study of a vertical earth-to-air heat exchanger system," Energy, Elsevier, vol. 172(C), pages 220-231.
    15. Wei, Haibin & Yang, Dong & Wang, Jilibo & Du, Jinhui, 2020. "Field experiments on the cooling capability of earth-to-air heat exchangers in hot and humid climate," Applied Energy, Elsevier, vol. 276(C).
    16. Singh, Ramkishore & Sawhney, R.L. & Lazarus, I.J. & Kishore, V.V.N., 2018. "Recent advancements in earth air tunnel heat exchanger (EATHE) system for indoor thermal comfort application: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 2162-2185.
    17. Ahmed, S.F. & Khan, M.M.K. & Amanullah, M.T.O. & Rasul, M.G. & Hassan, N.M.S., 2021. "A parametric analysis of the cooling performance of vertical earth-air heat exchanger in a subtropical climate," Renewable Energy, Elsevier, vol. 172(C), pages 350-367.
    18. Taurines, Kevin & Giroux-Julien, Stéphanie & Farid, Mohammed & Ménézo, Christophe, 2021. "Numerical modelling of a building integrated earth-to-air heat exchanger," Applied Energy, Elsevier, vol. 296(C).

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