A systematic study of the residual gas effect on vacuum solar receiver

Jun Wang, Xinyan Huang, Guangjie Gong, Menglong Hao, Fangfang Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

32 Citations (Scopus)

Abstract

A parabolic trough solar receiver is the key component in the parabolic trough solar system. The annulus between the absorber and glass envelope is evacuated to protect the solar selective coating and decrease the heat loss of entire receiver. However, at any existing operational solar plants, the vacuum condition in annulus may be compromised by glass breakage, seals and bellows broken, hydrogen penetration and getter decomposition. In this paper, different heat transfer mechanisms due to variable residual gas conditions in the annulus are analyzed. In addition, a series of heat loss tests of China's first high temperature vacuum solar receiver are carried out by two methods with special exhaust system and vacuum gauges. The negative effects of residual gas, including environmental-sensitivity enhancement, coating degradation, and system efficiency decreasing, are acquired and analyzed with theoretical as well as test results.

Original languageEnglish
Pages (from-to)2367-2372
Number of pages6
JournalEnergy Conversion and Management
Volume52
Issue number6
DOIs
Publication statusPublished - 1 Jun 2011
Externally publishedYes

Keywords

  • Parabolic trough
  • Residual gas
  • Thermal properties
  • Vacuum receiver

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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