An experimental and theoretical study of radiative and conductive heat transfer in nongray semitransparent media
Author(s)
Eryou, N. Dennis; Glicksman, Leon R.
DownloadHTL_TR_1969_066.pdf (8.067Mb)
Other Contributors
Massachusetts Institute of Technology. Division of Sponsored Research.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology. Heat Transfer Laboratory.
Metadata
Show full item recordAbstract
One dimensional temperature profiles and heat fluxes within a slab of molten glass were measured experimentally. The glass slab was contained in a platinum foil lined ceramic tray inside a high temperature furnace. An optical method of temperature measurement was developed in which a helium-neon laser beam was directed along an isothermal path through the glass. The attenuation of the beam was a strong function of temperature and was used to evaluate the local temperatures within the glass slab. In order to perform a theoretical analysis the spectral absorption coefficient of the glass was measured between .6328 microns and 2. 75 microns from 2000 0F to 23000F. Two analyses were performed; one for a diffuse platinum-glass boundary and the other for a specular boundary. The experimentally measured temperature profiles and heat fluxes agreed with the predicted profiles within 50F and the heat fluxes to within ten percent.
Date issued
1969Publisher
Cambridge, Mass. : M.I.T. Engineering Projects Laboratory, [1969]
Other identifiers
14083477
Series/Report no.
Technical report (Massachusetts Institute of Technology, Heat Transfer Laboratory) ; no. 66.
Keywords
Heat -- Transmission., Radiative transfer.