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Generalised water flow rate control strategy for optimal part load operation of ground source heat pump systems

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  • Edwards, K.C.
  • Finn, D.P.

Abstract

A control strategy was developed to predict optimal ground source heat pump water flow rates under part load operation. Using this strategy, optimal flow rates are calculated from available design data and minimal on-line measurements. The optimal control strategy was evaluated with validated single speed and tandem speed ground source heat pump simulation models in both heating and cooling mode. A range of building load profiles were implemented when analysing heat pump system performance. The optimal strategy was shown to result in an improvement in system performance when compared to nominal flow rate operation, particularly for low load conditions. Due to the prevalence of low load operation over a heating or cooling season, the seasonal system performance (SPF3) was shown to increase by between 20% and 40% when using the optimal strategy.

Suggested Citation

  • Edwards, K.C. & Finn, D.P., 2015. "Generalised water flow rate control strategy for optimal part load operation of ground source heat pump systems," Applied Energy, Elsevier, vol. 150(C), pages 50-60.
    • Handle: RePEc:eee:appene:v:150:y:2015:i:c:p:50-60
    DOI: 10.1016/j.apenergy.2015.03.134
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    References listed on IDEAS

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    1. Montagud, Carla & Corberán, José Miguel & Ruiz-Calvo, Félix, 2013. "Experimental and modeling analysis of a ground source heat pump system," Applied Energy, Elsevier, vol. 109(C), pages 328-336.
    2. Liu, Xue-feng & Liu, Jin-ping & Lu, Ji-dong & Liu, Lei & Zou, Wei, 2012. "Research on operating characteristics of direct-return chilled water system controlled by variable temperature difference," Energy, Elsevier, vol. 40(1), pages 236-249.
    3. Man, Yi & Yang, Hongxing & Wang, Jinggang & Fang, Zhaohong, 2012. "In situ operation performance test of ground coupled heat pump system for cooling and heating provision in temperate zone," Applied Energy, Elsevier, vol. 97(C), pages 913-920.
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    Cited by:

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    2. Noye, Sarah & Mulero Martinez, Rubén & Carnieletto, Laura & De Carli, Michele & Castelruiz Aguirre, Amaia, 2022. "A review of advanced ground source heat pump control: Artificial intelligence for autonomous and adaptive control," Renewable and Sustainable Energy Reviews, Elsevier, vol. 153(C).
    3. Hu, Bin & Li, Yaoyu & Mu, Baojie & Wang, Shaojie & Seem, John E. & Cao, Feng, 2016. "Extremum seeking control for efficient operation of hybrid ground source heat pump system," Renewable Energy, Elsevier, vol. 86(C), pages 332-346.
    4. Fuentes, E. & Waddicor, D.A. & Salom, J., 2016. "Improvements in the characterization of the efficiency degradation of water-to-water heat pumps under cyclic conditions," Applied Energy, Elsevier, vol. 179(C), pages 778-789.
    5. Félix Ruiz-Calvo & Carla Montagud & Antonio Cazorla-Marín & José M. Corberán, 2017. "Development and Experimental Validation of a TRNSYS Dynamic Tool for Design and Energy Optimization of Ground Source Heat Pump Systems," Energies, MDPI, vol. 10(10), pages 1-21, September.
    6. Ikeda, Shintaro & Choi, Wonjun & Ooka, Ryozo, 2017. "Optimization method for multiple heat source operation including ground source heat pump considering dynamic variation in ground temperature," Applied Energy, Elsevier, vol. 193(C), pages 466-478.
    7. García-Céspedes, J. & Arnó, G. & Herms, I. & de Felipe, J.J., 2020. "Characterisation of efficiency losses in ground source heat pump systems equipped with a double parallel stage: A case study," Renewable Energy, Elsevier, vol. 147(P2), pages 2761-2773.
    8. Go, Gyu-Hyun & Lee, Seung-Rae & Yoon, Seok & Kim, Min-Jun, 2016. "Optimum design of horizontal ground-coupled heat pump systems using spiral-coil-loop heat exchangers," Applied Energy, Elsevier, vol. 162(C), pages 330-345.
    9. Ma, Zhenjun & Xia, Lei & Gong, Xuemei & Kokogiannakis, Georgios & Wang, Shugang & Zhou, Xinlei, 2020. "Recent advances and development in optimal design and control of ground source heat pump systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 131(C).
    10. Arpad Nyers & Jozsef Nyers, 2023. "Enhancing the Energy Efficiency—COP of the Heat Pump Heating System by Energy Optimization and a Case Study," Energies, MDPI, vol. 16(7), pages 1-20, March.
    11. Chen, Zhi & Lian, Xingwei & Tan, Jinjia & Xiao, Henglin & Ma, Qiang & Zhuang, Yan, 2023. "Study on heat-exchange efficiency and energy efficiency ratio of a deeply buried pipe energy pile group considering seepage and circulating-medium flow rate," Renewable Energy, Elsevier, vol. 216(C).
    12. Muller, C.J. & Craig, I.K., 2016. "Energy reduction for a dual circuit cooling water system using advanced regulatory control," Applied Energy, Elsevier, vol. 171(C), pages 287-295.

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