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Long-Term Performance Measurement and Analysis of a Small-Scale Ground Source Heat Pump System

Author

Listed:
  • Hao Liu

    (Division of Energy and Building Design, Department of Architecture and the Built Environment, Lund University, 221 00 Lund, Sweden)

  • Hongyi Zhang

    (Division of Energy and Building Design, Department of Architecture and the Built Environment, Lund University, 221 00 Lund, Sweden)

  • Saqib Javed

    (Division of Building Services, Department of Architecture and Civil Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden)

Abstract

Recent data suggest that heat pumps, despite having the potential to cover over 90% of the global space and water heating demands, only provide less than 5% of global heating. Heat pumps, in general, and ground source heat pumps, specifically, offer significant potential for energy savings and carbon emissions reduction in buildings. The realization of these potential benefits, however, requires proper design, installation, and operation of the entire heat pump system. This paper presents the performance analysis of a Swedish ground source heat pump system providing space heating and hot water to a sports clubhouse. The installation has been carefully instrumented to enable full characterization of the whole system including auxiliary components such as circulation pumps and supplementary heating. Seasonal performance factors, calculated for monthly and annual periods using high-quality, high-resolution measurement data collected over three years of system operation, have been reported based on the SEPEMO (SEasonal PErformance factor and MOnitoring for heat pump systems) and Annex 52 boundary schemes for evaluating and benchmarking the performance of the ground source heat pump system. The auxiliary system components were shown to have a large impact on the overall performance of the system. In particular, the legionella protection system was found to affect performance considerably. Recommendations as to how to improve the performance of the system under study and other similar systems are made from the design, installation, and operation perspectives.

Suggested Citation

  • Hao Liu & Hongyi Zhang & Saqib Javed, 2020. "Long-Term Performance Measurement and Analysis of a Small-Scale Ground Source Heat Pump System," Energies, MDPI, vol. 13(17), pages 1-30, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4527-:d:407159
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    References listed on IDEAS

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    1. Spitler, Jeffrey D. & Javed, Saqib & Ramstad, Randi Kalskin, 2016. "Natural convection in groundwater-filled boreholes used as ground heat exchangers," Applied Energy, Elsevier, vol. 164(C), pages 352-365.
    2. Naicker, Selvaraj S. & Rees, Simon J., 2018. "Performance analysis of a large geothermal heating and cooling system," Renewable Energy, Elsevier, vol. 122(C), pages 429-442.
    3. Jeffrey D. Spitler & Signhild Gehlin, 2019. "Measured Performance of a Mixed-Use Commercial-Building Ground Source Heat Pump System in Sweden," Energies, MDPI, vol. 12(10), pages 1-34, May.
    4. Franziska Bockelmann & M. Norbert Fisch, 2019. "It Works—Long-Term Performance Measurement and Optimization of Six Ground Source Heat Pump Systems in Germany," Energies, MDPI, vol. 12(24), pages 1-22, December.
    5. Naicker, Selvaraj S. & Rees, Simon J., 2020. "Long-term high frequency monitoring of a large borehole heat exchanger array," Renewable Energy, Elsevier, vol. 145(C), pages 1528-1542.
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    Cited by:

    1. Arghand, Taha & Javed, Saqib & Dalenbäck, Jan-Olof, 2023. "Combining direct ground cooling with ground-source heat pumps and district heating: Energy and economic analysis," Energy, Elsevier, vol. 270(C).
    2. Sabina Kordana-Obuch & Mariusz Starzec & Daniel Słyś, 2021. "Assessment of the Feasibility of Implementing Shower Heat Exchangers in Residential Buildings Based on Users’ Energy Saving Preferences," Energies, MDPI, vol. 14(17), pages 1-30, September.

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