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Multi-Energy Flow Optimal Dispatch of a Building Integrated Energy System Based on Thermal Comfort and Network Flexibility

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  • Jian Sun

    (State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing 102206, China)

  • Bingrui Sun

    (School of Energy Power and Mechanical Engineering, North China Electric Power University, No. 2 Beinong Road, Beijing 102206, China)

  • Xiaolong Cai

    (School of Energy Power and Mechanical Engineering, North China Electric Power University, No. 2 Beinong Road, Beijing 102206, China)

  • Dingqun Liu

    (School of Energy Power and Mechanical Engineering, North China Electric Power University, No. 2 Beinong Road, Beijing 102206, China)

  • Yongping Yang

    (State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, Beijing 102206, China)

Abstract

An efficient integrated energy system (IES) can enhance the potential of building energy conservation and carbon mitigation. However, imbalances between user-side demand and supply side output present formidable challenges to the operational dispatch of building energy systems. To mitigate heat rejection and improve dispatch optimization, an integrated building energy system incorporating waste heat recovery via an absorption heat pump based on the flow temperature model is adopted. A comprehensive analysis was conducted to investigate the correlation among heat pump operational strategies, thermal comfort, and the dynamic thermal storage capacity of piping network systems. The optimization calculations and comparative analyses were conducted across five cases on typical season days via the CPLEX solver with MATLAB R2018a. The simulation results indicate that the operational modes of absorption heat pump reduced the costs by 4.4–8.5%, while the absorption rate of waste heat increased from 37.02% to 51.46%. Additionally, the utilization ratio of battery and thermal storage units decreased by up to 69.82% at most after considering the pipeline thermal inertia and thermal comfort, thus increasing the system’s energy-saving ability and reducing the pressure of energy storage equipment, ultimately increasing the scheduling flexibility of the integrated building energy system.

Suggested Citation

  • Jian Sun & Bingrui Sun & Xiaolong Cai & Dingqun Liu & Yongping Yang, 2025. "Multi-Energy Flow Optimal Dispatch of a Building Integrated Energy System Based on Thermal Comfort and Network Flexibility," Energies, MDPI, vol. 18(15), pages 1-24, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:15:p:4051-:d:1713380
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    References listed on IDEAS

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