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Modeling and Simulation Analysis of Photovoltaic Photothermal Modules in Solar Heat Pump Systems

Author

Listed:
  • Tianbao Sun

    (China Institute of Metrology, Beijing 100029, China)

  • Zhun Li

    (China Institute of Metrology, Beijing 100029, China)

  • Yujun Gou

    (College of Metallurgy and Energy, North China University of Technology, Tangshan 063210, China)

  • Guangzheng Guo

    (College of Metallurgy and Energy, North China University of Technology, Tangshan 063210, China)

  • Yue An

    (College of Metallurgy and Energy, North China University of Technology, Tangshan 063210, China)

  • Yongqi Fu

    (College of Metallurgy and Energy, North China University of Technology, Tangshan 063210, China)

  • Qingan Li

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China)

  • Xiaohui Zhong

    (Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China)

Abstract

A solar heat pump based on the photovoltaic photothermal (PV/T) module is a new technology that can improve the photovoltaic efficiency and recovery of waste heat in photovoltaic conversion. The comprehensive efficiency of a system can thus be greatly improved. At present, there is little research on the simulation of a solar heat pump based on the Simulink 2018 software. In this paper, PV/T modules are modeled and simulated using the Simulink software based on the typical meteorological parameters in Beijing city during summer and winter conditions. Considering the system characteristics of a simultaneous operation, the models of all components such as the compressor, condenser, evaporator, expansion valve, and heat storage tanks contained in a system are established based on the system’s working principle, energy conservation equations, and some empirical formulas and then simulated. As PV/T modules are the key influencing factor for system performance, the model and simulation process are introduced in detail in this paper. The results show that the surface temperature of PV/T modules under different operating conditions are all significantly lower than that of ordinary photovoltaic panels. The average temperature of PV/T modules is only 15.2 °C, which is 20.2 °C lower than that of ordinary panels under summer conditions, and the average temperature of PV/T modules is only 0.5 °C, 17.8 °C lower than that of ordinary panels under winter conditions. The average photoelectric efficiency can be improved by 15.4% and 8.9%. And, the temperature change amplitude of PV/T modules is lower, which weakens the temperature fluctuation of the modules. The photovoltaic efficiency is therefore further increased. As a result, the power generation and photovoltaic efficiency are both improved significantly.

Suggested Citation

  • Tianbao Sun & Zhun Li & Yujun Gou & Guangzheng Guo & Yue An & Yongqi Fu & Qingan Li & Xiaohui Zhong, 2024. "Modeling and Simulation Analysis of Photovoltaic Photothermal Modules in Solar Heat Pump Systems," Energies, MDPI, vol. 17(5), pages 1-14, February.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:5:p:1042-:d:1344079
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    References listed on IDEAS

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