Some Problems Of Precise Measurements Of Heat Transfer Coefficients In Glass Melts. Part 1. Measurements Of Effective Conductivity

In this paper the method of measurements of the so-called effective conductivity of glass melts based on characteristics of temperature gradient in molten glass inside a refractory tank is analysed. A computer model based on the solution of the radiative transfer equation in a semi-transparent medium was used. The authors show what particular defects of experimental procedure could be the reason of surprising results reported, namely that the measured effective conductivity coefficient of a number of glasses was found to be lower than the radiative conductivity alone.