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Validation and optimization of a solar heating plant with a large-scale heat pump

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  • Zhan, Chenxuan
  • Xu, Yi
  • Fan, Jianhua
  • Gao, Meng
  • Kong, Weiqiang
  • Wu, Jiani
  • Wang, Dengjia
  • Tian, Zhiyong

Abstract

The integration of multi-type heating sources offers immediate advantages at both the component and system levels, addressing thermal and economic considerations effectively. This study developed a dynamic simulation model in TRNSYS for the rum solar district heating plant with an air source heat pump and a gas boiler. The validity of the model was examined in detail using long-term monitoring data of the system. Both component-level validation and loop validation showed the performance of solar collector field, air-source heat pump, and the tank could be closely fit. The simulated system successfully replicated the energy conversion efficiency of the actual system, which was demonstrated with the simulated annual solar collector efficiency, heat pump COP, and the system solar fraction with error kept below 5%. Moreover, the control strategy employed in the simulation prioritized heat pump operation within a demand-response framework, thereby reducing reliance on the boiler and resulting in a system-levelized cost of heat of 62.2 EUR/MWh, compared to 68.6 EUR/MWh in the actual system. Based on the simulated system. parameter study indicates the capital cost is sensitive to solar collectors and heat pump. GenOpt and TRNSYS are employed to minimize the solar loop’s net-levelized cost of heat with the aim of upscaling the heating plant. Considering the geographical constraints, maximizing collector area and tank volume can increase solar fraction by 20% and reduce sLCOH by 0.9 EUR/MWh, as shown with an 8000 m3 tank and 12,605 m3 of solar collectors. Besides, increasing the heat pump heating capacity to 3.4 MW is recommended because the system-levelized cost of heat can be further decreased by 1.1 EUR/MWh, and the CO2 emission could be decreased by 12%. The findings of the paper present a good reference for consultants and engineers in their efforts to develop solar heating systems with enhanced thermal performance along with low system-levelized costs of heat and carbon emissions.

Suggested Citation

  • Zhan, Chenxuan & Xu, Yi & Fan, Jianhua & Gao, Meng & Kong, Weiqiang & Wu, Jiani & Wang, Dengjia & Tian, Zhiyong, 2025. "Validation and optimization of a solar heating plant with a large-scale heat pump," Energy, Elsevier, vol. 319(C).
    • Handle: RePEc:eee:energy:v:319:y:2025:i:c:s0360544225005407
    DOI: 10.1016/j.energy.2025.134898
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    References listed on IDEAS

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    1. He, Zhaoyu & Farooq, Abdul Samad & Guo, Weimin & Zhang, Peng, 2022. "Optimization of the solar space heating system with thermal energy storage using data-driven approach," Renewable Energy, Elsevier, vol. 190(C), pages 764-776.
    2. Alessandro Casasso & Pietro Capodaglio & Fulvio Simonetto & Rajandrea Sethi, 2019. "Environmental and Economic Benefits from the Phase-out of Residential Oil Heating: A Study from the Aosta Valley Region (Italy)," Sustainability, MDPI, vol. 11(13), pages 1-16, July.
    3. Carlini, Federico & Christensen, Bent Jesper & Datta Gupta, Nabanita & Santucci de Magistris, Paolo, 2023. "Climate, wind energy, and CO2 emissions from energy production in Denmark," Energy Economics, Elsevier, vol. 125(C).
    4. Tian, Zhiyong & Perers, Bengt & Furbo, Simon & Fan, Jianhua, 2018. "Analysis and validation of a quasi-dynamic model for a solar collector field with flat plate collectors and parabolic trough collectors in series for district heating," Energy, Elsevier, vol. 142(C), pages 130-138.
    5. Liu, Yang & Xie, Xiaoqing & Wang, Mei, 2023. "Energy structure and carbon emission: Analysis against the background of the current energy crisis in the EU," Energy, Elsevier, vol. 280(C).
    6. Xu, Yi & Zhan, Chenxuan & Jensen, Adam R. & Gao, Meng & Kong, Weiqiang & Fan, Jianhua, 2024. "Thermo-economic analysis of a solar district heating plant with an air-to-water heat pump," Renewable Energy, Elsevier, vol. 237(PA).
    7. Jodeiri, A.M. & Goldsworthy, M.J. & Buffa, S. & Cozzini, M., 2022. "Role of sustainable heat sources in transition towards fourth generation district heating – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 158(C).
    8. Giuseppe Pinto & Elnaz Abdollahi & Alfonso Capozzoli & Laura Savoldi & Risto Lahdelma, 2019. "Optimization and Multicriteria Evaluation of Carbon-neutral Technologies for District Heating," Energies, MDPI, vol. 12(9), pages 1-19, April.
    9. Carroll, P. & Chesser, M. & Lyons, P., 2020. "Air Source Heat Pumps field studies: A systematic literature review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 134(C).
    10. Bava, Federico & Furbo, Simon, 2018. "Impact of different improvement measures on the thermal performance of a solar collector field for district heating," Energy, Elsevier, vol. 144(C), pages 816-825.
    11. Tschopp, Daniel & Tian, Zhiyong & Berberich, Magdalena & Fan, Jianhua & Perers, Bengt & Furbo, Simon, 2020. "Large-scale solar thermal systems in leading countries: A review and comparative study of Denmark, China, Germany and Austria," Applied Energy, Elsevier, vol. 270(C).
    12. Hu, Mingke & Zhao, Bin & Suhendri, & Cao, Jingyu & Wang, Qiliang & Riffat, Saffa & Su, Yuehong & Pei, Gang, 2022. "Extending the operation of a solar air collector to night-time by integrating radiative sky cooling: A comparative experimental study," Energy, Elsevier, vol. 251(C).
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