Radiation heat transfer enhanced absorber for high temperature solar-thermal applications

Zhenggang Fang, Chunhua Lu, Yi Lu, Delin Ma, Ling Wei, Peiwen Li, Yaru Ni, Shunyan Tao, Zhongzi Xu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

A novel design of a solar absorber making use of different optical properties of materials for high temperature solar-thermal applications is proposed. For the two sides of the sample, the solar absorbing surface is designed to absorb sunlight and reduce radiative heat loss, while the high emission surface is aimed at enhancing the heat transfer. The composite samples were prepared by tape casting, alternately laminating and high temperature sintering. Room temperature optical properties and temperature-dependent radiative properties of the composite samples were studied. The results showed that the emittances of the absorbing surface and heat transfer surface were 0.32 and 0.70, respectively. Due to this difference of emittances, the two surfaces exhibited a radiation temperature (read from thermography camera) difference of 140 °C when the actual sample temperature is 600 °C.

Original languageEnglish (US)
Pages (from-to)10531-10536
Number of pages6
JournalCeramics International
Volume42
Issue number8
DOIs
StatePublished - Jun 1 2016

Keywords

  • A. Tape casting
  • B. Composites
  • C. Optical properties
  • E. Thermal applications

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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