Energy distribution and melting efficiency in glass melting channel: Diagram of melt flow types and effect of melt input temperature

0497020 - ÚSMH 2019 RIV NL eng J - Článek v odborném periodiku
Hrbek, L. - Jebavá, Marcela - Němec, Lubomír
Energy distribution and melting efficiency in glass melting channel: Diagram of melt flow types and effect of melt input temperature.
Journal of Non-Crystalline Solids. Roč. 482, FEB 15 (2018), s. 30-39. ISSN 0022-3093. E-ISSN 1873-4812
Grant CEP: GA TA ČR(CZ) TH02020316
Institucionální podpora: RVO:67985891
Klíčová slova: Glass melting * Melt flow * Mathematical modelling * Energetic model * Space utilization * Melting performance
Obor OECD: Ceramics
Impakt faktor: 2.600, rok: 2018
https://www.sciencedirect.com/science/article/pii/S0022309317306646

The synergy between glass melting and glass flow character was investigated by mathematical modelling of a Joule heated glass melting channel with a central longitudinal row of vertical heating electrodes. The glass melt containing sand particles and bubbles entered the channel where different types of the melt flow were set up. The sand particle dissolution and the bubble removal were monitored up to the achievement of phenomena completion. The increasing fraction of energy supplied to the input region of the channel proved to be crucial for setting up the beneficial character of the melt flow and consequent increase of the melting performance. When the temperature of the inputting melt decreased, the melting performance also decreased. The relations of the energetic model were derived and applied to predict the beneficial type and conditions of the melt flow. The best results have been obtained for the flow character near the uniform flow. The beneficial state was achieved when each region of the channel was supplied by the energy needed there for glass heating and heat losses. The impact of the temperature of the inputting melt on the detailed character of the melt flow was discussed with the help of the energetic model.
Trvalý link: http://hdl.handle.net/11104/0289628