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Measurement and Verification of Integrated Ground Source Heat Pumps on a Shared Ground Loop

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  • Jeong Soo Shin

    (J&G Co., Ltd., Jeonju 55070, Korea)

  • Jong Woo Park

    (J&G Co., Ltd., Jeonju 55070, Korea)

  • Sean Hay Kim

    (School of Architecture; Seoul National University of Science & Technology; Seoul 01811, Korea)

Abstract

We propose an integrated geothermal system that consists of air-conditioning and hot water service ground source heat pumps, both of which share a ground water loop. The proposed system increases the COP of the service hot water ground source heat pump by recovering the condensation heat of the air-conditioning ground source heat pump as an evaporator heat source for the hot water service ground source heat pump. Eventually this integration expands the scope and capacity of the evaporator source in addition to the underground water of heat exchangers, which also leads to increase the COP of the air-conditioning ground source heat pump. The integrated geothermal heat pump system was installed in a hotel, and then data were measured for a limited period due to the hotel’s ongoing business activities. A TRNSYS simulation model has been developed as a baseline, and the baseline has been calibrated with the measured data. By running one-year simulations, it turns out that the annual electricity use for heating and cooling, and service hot water was reduced by 19.1% in the cooling season, and by 9.6% in the heating season, with respect to the conventional configuration in which the air-conditioning heat pump and hot water service heat pump work individually on their own ground loops.

Suggested Citation

  • Jeong Soo Shin & Jong Woo Park & Sean Hay Kim, 2020. "Measurement and Verification of Integrated Ground Source Heat Pumps on a Shared Ground Loop," Energies, MDPI, vol. 13(7), pages 1-24, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1752-:d:342030
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    References listed on IDEAS

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    Cited by:

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    3. Nan Yang & Weixiu Shi & Zihong Zhou, 2023. "Research on Application and International Policy of Renewable Energy in Buildings," Sustainability, MDPI, vol. 15(6), pages 1-25, March.
    4. Ji-Hyun Shin & Yoon-Bok Seong & Yong-In Kim & Young-Hum Cho, 2020. "Development of Changeover Operating Method Based on Performance Prediction of Hybrid Geothermal Heat Pump Systems through Field Test and Numerical Analysis," Energies, MDPI, vol. 13(20), pages 1-15, October.
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    6. Trond Thorgeir Harsem & Behrouz Nourozi & Amirmohammad Behzadi & Sasan Sadrizadeh, 2021. "Design and Parametric Investigation of an Efficient Heating System, an Effort to Obtain a Higher Seasonal Performance Factor," Energies, MDPI, vol. 14(24), pages 1-13, December.

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