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Model Verification and Justification Study of Spirally Corrugated Pipes in a Ground-Air Heat Exchanger Application

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  • Kwang-Seob Lee

    (Renewable Energy Engineering, University of Science and Technology, Korea, 217 Gajeong-ro, Yusung-gu, Daejeon 34113, Korea
    Energy Efficiency and Materials Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yusung-gu, Daejeon 34129, Korea)

  • Eun-Chul Kang

    (Energy Efficiency and Materials Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yusung-gu, Daejeon 34129, Korea)

  • Yu-Jin Kim

    (Renewable Energy Engineering, University of Science and Technology, Korea, 217 Gajeong-ro, Yusung-gu, Daejeon 34113, Korea
    Energy Efficiency and Materials Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yusung-gu, Daejeon 34129, Korea)

  • Euy-Joon Lee

    (Renewable Energy Engineering, University of Science and Technology, Korea, 217 Gajeong-ro, Yusung-gu, Daejeon 34113, Korea
    Energy Efficiency and Materials Research Department, Korea Institute of Energy Research, 152 Gajeong-ro, Yusung-gu, Daejeon 34129, Korea)

Abstract

Ground-air heat exchangers have become an important topic in recent years due to their contributions to the market growth of the ground source heat pump industry. This paper provides a comprehensive study and recommends suggestions on the selection process of a suitable pipe for an air-to-water heat pump (AWHP). Parametric studies including material, turbulent plate quantity, and pipe type were performed to identify an optimal pipe design for high-performance AWHP. Both numerical and experimental studies were carried out to validate current pipe models. Overall, there was good agreement between the numerical model and experimental results. It was determined that a spirally corrugated pipe exhibited excellent thermal power generation with little compromising pressure drop. Finally, a pipe selection example was demonstrated as a design guideline to size an optimal pipe for AWHP application.

Suggested Citation

  • Kwang-Seob Lee & Eun-Chul Kang & Yu-Jin Kim & Euy-Joon Lee, 2019. "Model Verification and Justification Study of Spirally Corrugated Pipes in a Ground-Air Heat Exchanger Application," Energies, MDPI, vol. 12(21), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:21:p:4047-:d:279764
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    References listed on IDEAS

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    1. Amanowicz, Łukasz, 2018. "Influence of geometrical parameters on the flow characteristics of multi-pipe earth-to-air heat exchangers – experimental and CFD investigations," Applied Energy, Elsevier, vol. 226(C), pages 849-861.
    2. Maoz & Saddam Ali & Noor Muhammad & Ahmad Amin & Mohammad Sohaib & Abdul Basit & Tanvir Ahmad, 2019. "Parametric Optimization of Earth to Air Heat Exchanger Using Response Surface Method," Sustainability, MDPI, vol. 11(11), pages 1-19, June.
    3. Li, Hui & Ni, Long & Liu, Guang & Zhao, Zisang & Yao, Yang, 2019. "Feasibility study on applications of an Earth-air Heat Exchanger (EAHE) for preheating fresh air in severe cold regions," Renewable Energy, Elsevier, vol. 133(C), pages 1268-1284.
    4. Zukowski, Mroslaw & Topolanska, Justyna, 2018. "Comparison of thermal performance between tube and plate ground-air heat exchangers," Renewable Energy, Elsevier, vol. 115(C), pages 697-710.
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    Cited by:

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    2. Piotr Michalak, 2022. "Hourly Simulation of an Earth-to-Air Heat Exchanger in a Low-Energy Residential Building," Energies, MDPI, vol. 15(5), pages 1-23, March.

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