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Heating Performance Analysis of an Air-to-Water Heat Pump Using Underground Air for Greenhouse Farming

Author

Listed:
  • Taesub Lim

    (Department of Architectural Engineering, Seoil University, Seoul 02192, Korea)

  • Yong-Kyu Baik

    (Department of Architectural Engineering, Seoil University, Seoul 02192, Korea)

  • Daeung Danny Kim

    (Architectural Engineering Department, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia)

Abstract

As one of the main businesses in Jeju-do in South Korea, specialized local products are grown in greenhouses. For greenhouse farming, it is preferable to use geothermal heat pump systems for energy conservation because of the stable temperature of the ground. In the same manner, heat pumps using underground air is recommended for greenhouse farming since underground air can easily be obtained from porous volcanic rocks in Jeju-do. However, direct usage of the underground air is not feasible for planting in the greenhouse or livestock care because the underground air is relatively humid and its temperature is low. For the present study, the heating performance of an air-to-water heat pump which used underground air as a heat source for greenhouse farming during the winter was assessed through measurements. In addition, the economic impact of the air-to-water heat pump (AWHP) was compared with a conventional air heater. According to the results, an AWHP can save more than 70% of the total heating costs compared with a conventional air heater. In sum, the utilization of the air-to-water heat pump using underground air can have a positive impact on reducing energy consumption as well as provide direct economic benefits.

Suggested Citation

  • Taesub Lim & Yong-Kyu Baik & Daeung Danny Kim, 2020. "Heating Performance Analysis of an Air-to-Water Heat Pump Using Underground Air for Greenhouse Farming," Energies, MDPI, vol. 13(15), pages 1-9, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:15:p:3863-:d:391164
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    References listed on IDEAS

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    Cited by:

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    2. Cao, Jingyu & Zheng, Ling & Peng, Jinqing & Wang, Wenjie & Leung, Michael K.H. & Zheng, Zhanying & Hu, Mingke & Wang, Qiliang & Cai, Jingyong & Pei, Gang & Ji, Jie, 2023. "Advances in coupled use of renewable energy sources for performance enhancement of vapour compression heat pump: A systematic review of applications to buildings," Applied Energy, Elsevier, vol. 332(C).
    3. Vítor Leal, 2021. "Buildings Energy Efficiency and Innovative Energy Systems," Energies, MDPI, vol. 14(16), pages 1-5, August.
    4. Hessam Golmohamadi, 2022. "Demand-Side Flexibility in Power Systems: A Survey of Residential, Industrial, Commercial, and Agricultural Sectors," Sustainability, MDPI, vol. 14(13), pages 1-16, June.
    5. Adnan Rasheed & Jong Won Lee & Hyeon Tae Kim & Hyun Woo Lee, 2022. "Study on Heating and Cooling Performance of Air-to-Water Heat Pump System for Protected Horticulture," Energies, MDPI, vol. 15(15), pages 1-19, July.
    6. Cristina Sáez Blázquez & Ignacio Martín Nieto & Javier Carrasco García & Pedro Carrasco García & Arturo Farfán Martín & Diego González-Aguilera, 2023. "Comparative Analysis of Ground Source and Air Source Heat Pump Systems under Different Conditions and Scenarios," Energies, MDPI, vol. 16(3), pages 1-16, January.
    7. Adnan Rasheed & Wook Ho Na & Jong Won Lee & Hyeon Tae Kim & Hyun Woo Lee, 2021. "Development and Validation of Air-to-Water Heat Pump Model for Greenhouse Heating," Energies, MDPI, vol. 14(15), pages 1-22, August.

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