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Development and Validation of Air-to-Water Heat Pump Model for Greenhouse Heating

Author

Listed:
  • Adnan Rasheed

    (Smart Agriculture Innovation Center, Kyungpook National University, Daegu 41566, Korea)

  • Wook Ho Na

    (Smart Agriculture Innovation Center, Kyungpook National University, Daegu 41566, Korea)

  • Jong Won Lee

    (Department of Horticulture Environment System, Korea National College of Agriculture and Fisheries, 1515, Kongjwipatjwi-ro, Deokjin-gu, Jeonju-si 54874, Jeollabuk-do, Korea)

  • Hyeon Tae Kim

    (Department of Bio-Industrial Machinery Engineering, Institute of Agricultural and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea)

  • Hyun Woo Lee

    (Smart Agriculture Innovation Center, Kyungpook National University, Daegu 41566, Korea
    Department of Agricultural Engineering, Kyungpook National University, Daegu 702-701, Korea)

Abstract

This study proposes a building energy simulation (BES) model of an air-to-water heat pump (AWHP) system integrated with a multi-span greenhouse using the TRNSYS-18 program. The proposed BES model was validated using an experimental AWHP and a multi-span greenhouse installed in Kyungpook National University, Daegu, South Korea (latitude 35.53° N, longitude 128.36° E, elevation 48 m). Three AWHPs and a water storage tank were used to fulfill the heat energy requirement of the three-span greenhouse with 391.6 m 2 of floor area. The model was validated by comparing the following experimental and simulated results, namely, the internal greenhouse temperature, the heating load of the greenhouse, heat supply from the water storage tank to the greenhouse, heat pumps’ output water temperature, power used by the heat pumps, coefficient of performance (COP) of the heat pump, and water storage tank temperature. The BES model’s performance was evaluated by calculating the root mean square error (RMSE) and the Nash–Sutcliffe efficiency (NSE) coefficient of validation results. The overall results correlated well with the experimental and simulated results and encouraged adopting the BES model. The average calculated COP of the AWHP was 2.2 when the outside temperature was as low as −13 °C. The proposed model was designed simply, and detailed information of each step is provided to make it easy to use for engineers, researchers, and consultants.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4714-:d:607797
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    References listed on IDEAS

    as
    1. Lee, Jin-Yong, 2009. "Current status of ground source heat pumps in Korea," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(6-7), pages 1560-1568, August.
    2. Ozgener, Onder, 2010. "Use of solar assisted geothermal heat pump and small wind turbine systems for heating agricultural and residential buildings," Energy, Elsevier, vol. 35(1), pages 262-268.
    3. 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.
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    5. Adnan Rasheed & Jong Won Lee & Hyun Woo Lee, 2018. "Development and Optimization of a Building Energy Simulation Model to Study the Effect of Greenhouse Design Parameters," Energies, MDPI, vol. 11(8), pages 1-19, August.
    6. Adnan Rasheed & Wook Ho Na & Jong Won Lee & Hyeon Tae Kim & Hyun Woo Lee, 2019. "Optimization of Greenhouse Thermal Screens for Maximized Energy Conservation," Energies, MDPI, vol. 12(19), pages 1-20, September.
    7. Artur Nemś & Magdalena Nemś & Klaudia Świder, 2018. "Analysis of the Possibilities of Using a Heat Pump for Greenhouse Heating in Polish Climatic Conditions—A Case Study," Sustainability, MDPI, vol. 10(10), pages 1-23, September.
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    Cited by:

    1. Misbaudeen Aderemi Adesanya & Wook-Ho Na & Anis Rabiu & Qazeem Opeyemi Ogunlowo & Timothy Denen Akpenpuun & Adnan Rasheed & Yong-Cheol Yoon & Hyun-Woo Lee, 2022. "TRNSYS Simulation and Experimental Validation of Internal Temperature and Heating Demand in a Glass Greenhouse," Sustainability, MDPI, vol. 14(14), pages 1-30, July.
    2. 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.
    3. Yu Sun & Rijing Zhao & Siyuan Wu & Dong Huang, 2021. "Proposal, Robustness Analysis and Equivalent Implementation of Optimization Method for Row-by-Row Fin Distribution in Multi-Row Frosting Evaporator," Energies, MDPI, vol. 14(19), pages 1-17, September.
    4. Muhammad Sultan & Muhammad Hamid Mahmood & Md Shamim Ahamed & Redmond R. Shamshiri & Muhammad Wakil Shahzad, 2022. "Energy Systems and Applications in Agriculture," Energies, MDPI, vol. 15(23), pages 1-3, December.

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