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Thermal and hydraulic characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud passages

  • Linrui Ma
  • Zhifeng WangEmail author
  • Ershu Xu
  • Li Xu
Research Article
  • 5 Downloads

Abstract

To better understand the characteristics of a large-scaled parabolic trough solar field (PTSF) under cloud passages, a novel method which combines a closed-loop thermal hydraulic model (CLTHM) and cloud vector (CV) is developed. Besides, the CLTHM is established and validated based on a pilot plant. Moreover, some key parameters which are used to characterize a typical PTSF and CV are presented for further simulation. Furthermore, two sets of results simulated by the CLTHM are compared and discussed. One set deals with cloud passages by the CV, while the other by the traditionally distributed weather stations (DWSs). Because of considering the solar irradiance distribution in a more detailed and realistically way, compared with the distributed weather station (DWS) simulation, all essential parameters, such as the total flowrate, flow distribution, outlet temperature, thermal and exergetic efficiency, and exergetic destruction tend to be more precise and smoother in the CV simulation. For example, for the runner outlet temperature, which is the most crucial parameter for a running PTSF, the maximum relative error reaches −15% in the comparison. In addition, the mechanism of thermal and hydraulic unbalance caused by cloud passages are explained based on the simulation.

Keywords

parabolic trough solar field (PTSF) thermal hydraulic model cloud passages transients 

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Notes

Acknowledgements

This work was supported by the National Key Research and Development Program of China (Grant No. 2018YFB-0905102).

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Copyright information

© Higher Education Press and Springer-VerlagGmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Linrui Ma
    • 1
    • 2
    • 3
    • 4
  • Zhifeng Wang
    • 1
    • 2
    • 4
    Email author
  • Ershu Xu
    • 5
  • Li Xu
    • 1
    • 2
    • 4
  1. 1.Key Laboratory of Solar Thermal Energy and Photovoltaic SystemChinese Academy of SciencesBeijingChina
  2. 2.Institute of Electrical EngineeringChinese Academy of SciencesBeijingChina
  3. 3.University of Chinese Academy of SciencesBeijingChina
  4. 4.Beijing Engineering Research Center of Solar Thermal PowerBeijingChina
  5. 5.School of Energy Power and Mechanical EngineeringNorth China Electric Power UniversityBeijingChina

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