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Analysis of Retrofit Solutions of a Ground Source Heat Pump System: An Italian Case Study

Author

Listed:
  • Angelo Zarrella

    (Department of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padova, Italy)

  • Roberto Zecchin

    (Department of Industrial Engineering, University of Padova; Via VIII Febbraio 2, 35122 Padova, Italy
    Manens-Tifs S.p.A., Corso Stati Uniti 56, 35127 Padova, Italy)

  • Philippe Pasquier

    (Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, P.O. Box 6079 Centre-Ville, Montréal, QC H3C 3A7, Canada)

  • Diego Guzzon

    (Manens-Tifs S.p.A., Corso Stati Uniti 56, 35127 Padova, Italy)

  • Enrico Prataviera

    (Department of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padova, Italy)

  • Jacopo Vivian

    (Department of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padova, Italy)

  • Michele De Carli

    (Department of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padova, Italy)

  • Giuseppe Emmi

    (Department of Industrial Engineering, University of Padua, Via Venezia 1, 35131 Padova, Italy)

Abstract

Ground coupled heat pumps are a notoriously efficient system for heating and cooling buildings. Sometimes the characteristics of the building and the user’s needs are such that the amount of heat extracted from the ground during the winter season can be considerably different from the amount injected in summer. This situation can cause a progressive cooling or heating of the ground with a negative effect on the energy efficiency and correct operation of the system. In these cases, an accurate sizing has to be done. In systems already built, it could be necessary to intervene a posteriori to remedy an excessive ground thermal drift due to the energy unbalance. In this work, such a situation relating to a real office building in Italy is investigated and several solutions are examined, one of which has been then implemented. In particular, a hybrid heat pump using as heat sink both the ground and external air is compared with common solutions through computer simulations using a dedicated numerical model, which has also been compared with monitoring data. As a result, the hybrid heat pump shows better performance and limits the thermal drift of the ground temperature.

Suggested Citation

  • Angelo Zarrella & Roberto Zecchin & Philippe Pasquier & Diego Guzzon & Enrico Prataviera & Jacopo Vivian & Michele De Carli & Giuseppe Emmi, 2020. "Analysis of Retrofit Solutions of a Ground Source Heat Pump System: An Italian Case Study," Energies, MDPI, vol. 13(21), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5680-:d:437473
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    References listed on IDEAS

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    1. Qi, Zishu & Gao, Qing & Liu, Yan & Yan, Y.Y. & Spitler, Jeffrey D., 2014. "Status and development of hybrid energy systems from hybrid ground source heat pump in China and other countries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 29(C), pages 37-51.
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    8. Liu, Zhijian & Xu, Wei & Zhai, Xue & Qian, Cheng & Chen, Xi, 2017. "Feasibility and performance study of the hybrid ground-source heat pump system for one office building in Chinese heating dominated areas," Renewable Energy, Elsevier, vol. 101(C), pages 1131-1140.
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    Cited by:

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    5. Xiaohang Shen & Nianping Li & Jiao Lu & Yongga A, 2020. "Heating Performance of Solar Building Integrated Wall under Natural Circulation," Energies, MDPI, vol. 13(23), pages 1-22, November.

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