Combined nongray radiative and conductive heat transfer in multiple glazing taking into account of specular reflection and absorption

Shigenao Maruyama, Yusuke Mori, Chie Chikira, Seigo Sakai

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Combined nongray radiative and conductive heat transfer in multiple glazing subjected to solar irradiation is analyzed. A spectral solar model proposed by Bird et al. is used to calculate direct and diffuse solar irradiance. The radiation element method by ray emission model, REM2, is used to analyze spectral radiative heat transfer. Specular reflection at boundary surfaces is taken into account. Spectral dependence of radiation properties of glass such as specular reflectivity, refraction angle, and absorption coefficient is taken into account. Steady-state temperature and heat flux distributions in glass layer are obtained and insulating efficiency of multiple glazing is examined. Overall heat transfer coefficients predicted by the present method are compared with those based on the JIS method. The values obtained by the present method are slightly smaller than those obtained by the JIS method. To investigate the spectral variation of radiative heat flux attenuated during glass layer, spectral heat flux at room side surface and incident radiation are compared.

Original languageEnglish
Pages (from-to)3424-3431
Number of pages8
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume68
Issue number676
DOIs
Publication statusPublished - 2002 Dec

Keywords

  • Glass
  • Heat Conduction
  • Multiple Glazing
  • Nongray
  • Numerical Analysis
  • Solar Irradiation
  • Specular Reflection
  • Thermal Radiation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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