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Simulation study on thermal performance of solar coupled air source heat pump system with phase change heat storage in cold regions

Author

Listed:
  • Gao, Jinshuang
  • Li, Sheng
  • Adnouni, M.
  • Huang, Yan
  • Yu, Meng
  • Zhao, Yazhou
  • Zhang, Xuejun

Abstract

The development of efficient and clean heating technologies is profoundly significant for the reduction of carbon emissions in cold regions. This paper puts forth a novel solar-coupled air source heat pump system integrated with phase change heat storage technology, which is well-suited for regions with such climatic conditions. A numerical model of the components and coupled systems is established using the lumped parameter method, and an iterative method is employed for the computational solution in MATLAB software. A variety of system performance aspects are then simulated and analysed following the configuration of component structural parameters and initial operating conditions. The results of the simulations indicate that an increase in the phase change temperature interval of the phase change materials leads to a higher average heat release power. In particular, a 2 °C increase in the phase change temperature interval results in an increase in the heat release power of over 10 %. Furthermore, when the system is applied in typical cold regions, including Kunming, Hangzhou, Lhasa, and Harbin, the average coefficient of performance is 10.23, 8.87, 8.49, and 7.70, respectively. The proportion of solar energy input contributes to an increase in system efficiency across all regions. A case study of Hangzhou reveals that the incorporation of solar energy into the system results in an increase in efficiency of 70.91 %. This research provides valuable operational methods and site selection recommendations for engineering practices, laying a theoretical foundation for its widespread application in cold regions.

Suggested Citation

  • Gao, Jinshuang & Li, Sheng & Adnouni, M. & Huang, Yan & Yu, Meng & Zhao, Yazhou & Zhang, Xuejun, 2024. "Simulation study on thermal performance of solar coupled air source heat pump system with phase change heat storage in cold regions," Energy, Elsevier, vol. 308(C).
    • Handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224026951
    DOI: 10.1016/j.energy.2024.132921
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    References listed on IDEAS

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