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RADIATIVE HEAT TRANSFER IN FIBROUS INSULATIONS. ANALYTICAL AND EXPERIMENTAL STUDY.

Author(s) : TONG T. W., YANG Q. S., TIEN C. L.

Type of article: Article

Summary

THE RADIATIVE TRANSPORT PROCESS IS MODELLED BY THE TWO-FLUX SOLUTION AND THE LINEAR ANISOTROPIC SCATTERING SOLUTION OF THE EQUATION OF TRANSFER. IT HAS BEEN FOUND THAT THE RADIANT HEAT FLUX CAN BE MINIMIZED BY MAKING THE MEAN RADIUS OF THE FIBERS CLOSE TO THAT WHICH YIELDS THE MAXIMUM EXTINCTION COEFFICIENT. THE SPECTRAL EXTINCTION COEFFICIENTS FOR A COMMERCIAL LIGHT WEIGHT FIBROUS INSULATION (LWFI) HAVE BEEN MEASURED AND A GUARDED HOT PLATE APPARATUS HAS BEEN USED. THE EXPERIMENTAL RESULTS ARE COMPARED WITH THE THEORETICAL VALUES. THE COMPARISONS REVEAL THAT THE ANALYTICAL MODELS ARE USEFUL IN GIVING REPRESENTATIVE VALUES FOR THE RADIATIVE PROPERTIES OF TYPICAL LWFI.

Details

  • Original title: RADIATIVE HEAT TRANSFER IN FIBROUS INSULATIONS. ANALYTICAL AND EXPERIMENTAL STUDY.
  • Record ID : 1984-0051
  • Languages: English
  • Source: J. Heat Transf. - vol. 105 - n. 1
  • Publication date: 1983/02
  • Document available for consultation in the library of the IIR headquarters only.

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