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Numerical Study on Thermal Efficiency of Large-Scale Flat-Plate Solar Collectors

  • Dengjia WangEmail author
  • Yuchao Ren
  • Yingya Chen
  • Yanfeng Liu
Conference paper
  • 248 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

The flat-plate solar collectors have better efficiency characteristics in low-temperature region. With the development of solar thermal utilization technology, the research of collectors suitable for different temperature requirements, application sites and personalized design of collectors will be a new direction in the future, and the flat-plate solar collectors used in solar heating system will be a development trend. Therefore, it is proposed that the flat-plate solar collectors should increase their collector efficiency and outlet temperature by increasing the scale. According to the heat transfer mathematical model of flat-plate solar collector, the relationship between heat-collecting area and collector efficiency was studied. In this paper, the 3-D physical models of the large-scale flat-plate solar collectors were established. The CFD software was used to simulate the operation characteristics of large-scale flat-plate solar collectors under different working conditions, and the heat loss, heat collection and thermal efficiency of different scale collectors were analyzed. It is shown that the instantaneous efficiency of large-scale collector is 1– 4% higher than that of parallel collector.

Keywords

Large scale Solar collector Thermal efficiency 

Notes

Acknowledgements

The research was supported by National Natural Science Foundation of China (Nos. 51678468, 51878532) and the National key research and development program (No. 2016YFC0700400).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Dengjia Wang
    • 1
    • 2
    Email author
  • Yuchao Ren
    • 1
    • 2
  • Yingya Chen
    • 1
    • 2
  • Yanfeng Liu
    • 1
    • 2
  1. 1.State Key Laboratory of Green Building in Western ChinaXi’an University of Architecture and TechnologyXi’anChina
  2. 2.School of Building Services Science and EngineeringXi’an University of Architecture and TechnologyXi’anChina

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