An experimental and theoretical study of radiative and conductive heat transfer in nongray semitransparent media
Name
HTL_TR_1969_066.pdf
Size
8.07 MB
Format
Adobe PDF
Checksum (MD5)
da088eba2413d7eb84d59f4b071eb7ac
Author(s)
Eryou, N. Dennis
Glicksman, Leon R.
Date Issued
1969
Publisher
Cambridge, Mass. : M.I.T. Engineering Projects Laboratory, [1969]
Series/Report no.
Technical report (Massachusetts Institute of Technology, Heat Transfer Laboratory) ; no. 66.
Abstract
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.
Subjects
Heat -- Transmission.
Radiative transfer.
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