Heat loss of parabolic trough evacuated tubular collector

Guangjie Gong, Jun Wang, Xinyan Huang, Menglong Hao, Yaoming Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

Mathematical model of radiation and residual gas convection heat transfer from absorber to glass envelope, convection and radiation heat transfer from glass to ambient was established, the calculation method of the model was also proposed in this paper, and the accuracy of the model was verified by comparing with experimental results. Several major factors that can influence heat loss were analysed using this model. The results show that the heat loss is much more when the absorber temperature is higher; lower ambient temperature and higher wind speed will cause more heat loss, but not very much; the emittance of the selective coating is a key factor to heat loss; vacuum level will also influence heat loss a lot.

Original languageEnglish
Pages (from-to)517-522
Number of pages6
JournalTaiyangneng Xuebao/Acta Energiae Solaris Sinica
Volume32
Issue number4
Publication statusPublished - 1 Apr 2011
Externally publishedYes

Keywords

  • Absorber
  • Emittance
  • Evacuated tubular collector
  • Mathematical model
  • Vacuum level

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology

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