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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F17%3A00480679" target="_blank" >RIV/67985891:_____/17:00480679 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/17:43914568

Výsledek na webu

<a href="http://dx.doi.org/10.1111/jace.15052" target="_blank" >http://dx.doi.org/10.1111/jace.15052</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.15052" target="_blank" >10.1111/jace.15052</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

The effective heat conductivity (k) of reacting melter feed affects the heat transfer and conversion process in the cold cap, a layer of reacting feed floating on molten glass. A heat conductivity meter was used to measure k of samples of a cold cap retrieved from a laboratory-scale melter, loose dry powder feed samples, and samples cut from fast-dried slurry blocks. These blocks were formed to simulate the feed conditions in the cold-cap by rapidly evaporating water from feed slurry poured onto a 200°C surface. Our study indicates that the effective heat conductivity of the feed in the cold cap is significantly higher than that of loose dry powder feed, which is a result of the feed solidification during the water evaporation from the feed slurry. To assess the heat transfer at higher temperatures when feed turns into foam, we developed a theoretical model that predicts the foam heat conductivity based on morphology data from in-situ X-ray computed tomography. The implications for the mathematical modeling of the cold cap are discussed.

Název v anglickém jazyce

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

Popis výsledku anglicky

The effective heat conductivity (k) of reacting melter feed affects the heat transfer and conversion process in the cold cap, a layer of reacting feed floating on molten glass. A heat conductivity meter was used to measure k of samples of a cold cap retrieved from a laboratory-scale melter, loose dry powder feed samples, and samples cut from fast-dried slurry blocks. These blocks were formed to simulate the feed conditions in the cold-cap by rapidly evaporating water from feed slurry poured onto a 200°C surface. Our study indicates that the effective heat conductivity of the feed in the cold cap is significantly higher than that of loose dry powder feed, which is a result of the feed solidification during the water evaporation from the feed slurry. To assess the heat transfer at higher temperatures when feed turns into foam, we developed a theoretical model that predicts the foam heat conductivity based on morphology data from in-situ X-ray computed tomography. The implications for the mathematical modeling of the cold cap are discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the American Ceramic Society

ISSN

0002-7820

e-ISSN

—

Svazek periodika

100

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

5096-5106

Kód UT WoS článku

000416463600018

EID výsledku v databázi Scopus

2-s2.0-85022174578