Solar Energy (태양에너지)

The Korean Solar Energy Society (한국태양에너지학회)
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An Analysis of Heat Losses from Receivers for a Multifaceted Parabolic Solar Collector

접시형 태양열 집광시스템용 흡수기의 열손실 해석

  • Ryu, S.Y. (Department of Mechanical Engineering, Graduate School, In-ha University) ;
  • Seo, T.B. (Department of Mechanical Engineering, In-ha University) ;
  • Kang, Y.H. (Korea Institute of Energy Research)
  • 류시열 (인하대학교 기계공학과 대학원) ;
  • 서태범 (인하대학교 기계공학과) ;
  • 강용혁 (한국에너지기술연구소)
  • Published : 2000.09.30
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Abstract

Heat losses from receivers for a dish-type solar energy collecting system are numerically investigated. The analytical method for predicting conductive heat loss from a cavity receiver is used. The Stine and McDonald Model is used to estimate convective heat loss. Two kinds of techniques for the radiation analysis are used. The Net Radiation Method that is based on the radiation heat balance on the surface is used to calculate the radiation heat transfer rate from the inside surface of the cavity receiver to the environment. The Monte-Carlo Method that is the statistical approach is adopted to predict the radiation heat transfer rate from the reflector to the receiver. Based on the heat loss analysis, the performance of two different receivers for multifaceted parabolic solar collectors with several flat facets can be estimated, and the optimal facet size is obtained.

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