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A dynamic thermal performance model for flat-plate solar collectors based on the thermal inertia correction of the steady-state test method

Author

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  • Deng, Jie
  • Xu, Yupeng
  • Yang, Xudong

Abstract

In determining the dynamic thermal performance of a flat-plate solar collector, when the instantaneous solar irradiance changes sharply at one moment, most of the existing models cannot accurately predict the momentary thermal characteristics of outlet temperature and useful heat gain. In the present study, an analytical model in the form of series expansion is put forward to depict the momentary thermal characteristics of flat-plate solar collectors. The analytical model reveals that, instantaneous useful heat gain of a solar collector at one moment consists of the steady-state useful heat gain and corresponding thermal inertia correction. The model is then validated by the experimental data. It indicates that the analytical model can properly predict the dynamic thermal performance of the solar air collector. Besides, the model pertains to other types of solar thermal collectors, if they can be tested by the steady-state test method.

Suggested Citation

  • Deng, Jie & Xu, Yupeng & Yang, Xudong, 2015. "A dynamic thermal performance model for flat-plate solar collectors based on the thermal inertia correction of the steady-state test method," Renewable Energy, Elsevier, vol. 76(C), pages 679-686.
    • Handle: RePEc:eee:renene:v:76:y:2015:i:c:p:679-686
    DOI: 10.1016/j.renene.2014.12.005
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    References listed on IDEAS

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    1. Hou, H.J. & Wang, Z.F. & Wang, R.Z. & Wang, P.M., 2005. "A new method for the measurement of solar collector time constant," Renewable Energy, Elsevier, vol. 30(6), pages 855-865.
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    Cited by:

    1. Wang, Dengjia & Mo, Zhelong & Liu, Yanfeng & Ren, Yuchao & Fan, Jianhua, 2022. "Thermal performance analysis of large-scale flat plate solar collectors and regional applicability in China," Energy, Elsevier, vol. 238(PC).
    2. Pandey, Krishna Murari & Chaurasiya, Rajesh, 2017. "A review on analysis and development of solar flat plate collector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 641-650.
    3. Fekete, István & Farkas, István, 2019. "Numerical and experimental study of building integrated solar tile collectors," Renewable Energy, Elsevier, vol. 137(C), pages 45-55.
    4. Kicsiny, Richárd, 2016. "Improved multiple linear regression based models for solar collectors," Renewable Energy, Elsevier, vol. 91(C), pages 224-232.
    5. Ma, Ruihua & Ma, Dongyan & Ma, Ruijiang & Long, Enshen, 2022. "Theoretical and experimental analysis of temperature variation of V–Ti black ceramic solar collector," Renewable Energy, Elsevier, vol. 194(C), pages 1153-1162.
    6. 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.

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