Determination of Temperature-Dependent Heat Conductivity and Thermal Diffusivity of Waste Glass Melter Feed

2013 ◽  
Vol 96 (6) ◽  
pp. 1891-1898 ◽  
Author(s):  
Richard Pokorny ◽  
Jarrett A. Rice ◽  
Michael J. Schweiger ◽  
Pavel Hrma
Keyword(s):  
Thermal Diffusivity ◽  
Heat Conductivity ◽  
Waste Glass ◽  
Temperature Dependent ◽  
Glass Melter

Determination of Heat Conductivity and Thermal Diffusivity of Waste Glass Melter Feed: Extension to High Temperatures

2014 ◽  
Vol 97 (6) ◽  
pp. 1952-1958 ◽  
Author(s):  
Jarrett A. Rice ◽  
Richard Pokorny ◽  
Michael J. Schweiger ◽  
Pavel Hrma
Keyword(s):  
Thermal Diffusivity ◽  
High Temperatures ◽  
Heat Conductivity ◽  
Waste Glass ◽  
Glass Melter

The void fraction of melter feed during nuclear waste glass vitrification

2015 ◽  
Vol 1744 ◽  
pp. 107-112
Author(s):  
Zachary J. Hilliard ◽  
Pavel R. Hrma
Keyword(s):  
Void Fraction ◽  
Melting Process ◽  
Waste Glass ◽  
Expansion Test ◽  
Glass Forming ◽  
Glass Melter ◽  
Temperature Heating ◽  
Fraction Porosity ◽  
Profile Area

ABSTRACTTo efficiently vitrify Hanford waste, the melting process (i.e., melter feed turning into waste glass) must be modeled and optimized. The rate of heat transfer to the melter feed in a waste glass melter, and thus the rate of melting, is strongly affected by the melter feed porosity, especially in the final stages where the glass-forming melt produces foam that insulates the feed from the molten glass. The volume expansion test allows the determination of the melter feed porosity as a function of temperature. This test measures the profile area of the feed pellet as it turns into glass. This contribution presents the calculation of the void fraction (porosity) of the melter feed as a function of temperature, heating rate, and material parameters. The process of finding the void fraction is described as well as results from the application of this process.

Determination of heat conductivity of waste glass feed and its applicability for modeling the batch-to-glass conversion

2017 ◽  
Vol 100 (11) ◽  
pp. 5096-5106 ◽  
Author(s):  
Miroslava Hujova ◽  
Richard Pokorny ◽  
Jaroslav Klouzek ◽  
Derek R. Dixon ◽  
Derek A. Cutforth ◽  
...  
Keyword(s):  
Heat Conductivity ◽  
Waste Glass
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