Publication detail
THE EFFECT OF SPRAY WATER TEMPERATURE ON SECONDARY COOLING SPRAY HEAT TRANSFER COEFFICIENTS AND METHODS FOR IMPLEMENTING THE EFFECT IN A DYNAMIC COOLING CONTROL MODEL
HORSKÝ, J. MORAVEC, R. BLAZEK, K. GUZEJ, M.
Czech title
Vliv teploty chladící vody na soucinitel přestupu tepla během sekundárního chlazení a metody implementace tohoto jevu do řídicího modelu chlazení
English title
THE EFFECT OF SPRAY WATER TEMPERATURE ON SECONDARY COOLING SPRAY HEAT TRANSFER COEFFICIENTS AND METHODS FOR IMPLEMENTING THE EFFECT IN A DYNAMIC COOLING CONTROL MODEL
Type
conference paper
Language
en
Original abstract
Dynamic secondary cooling models developed at ArcelorMittal Global R&D use online calculated surface temperatures at various slab positions to adjust secondary cooling water based on aim surface temperatures. The latest development for this model is full implementation of experimentally measured heat transfer coefficients determined as a function of spray water volume, position under the spray nozzle and slab surface temperature. Water inlet temperature can have a significant influence on the heat transfer coefficient and hence cooling efficiency of the sprays. The Heat Transfer and Fluid Flow Laboratory of Brno Technical University (Brno) conducted experiments to determine the effect of the incoming spray water temperature on the HTC. They tested two different nozzles, one hydraulic and the other air mist. The incoming spray temperatures were 10, 20, 30, 50, and 70 degree Celsius.
Czech abstract
Řídicího model sekundárního chlazení vyvinut společností ArcelorMittal Global R&D počítá v reálném čase povrchové teploty pro různé bramy. S cílem nastavit správné intenzity sekundárního chlazení a tím optimalizovat povrchovou teplotu. Nejnovější verze tohoto modelu počítá s experimentálně naměřenými koeficienty přestupu tepla. Tato veličina se určí jako funkce objemu rozstřikované vody, poloze pod tryskou a povrchové teploty bramy. Teplota chladící vody může mít významný vliv na součinitel přestupu tepla a tím chlazení efekt. Laboratoř přenosu tepla a proudění z VUT v Brně experimentálně zjišťuje vliv teploty chladící vody na součinitel přestupu tepla. Byly testovány dvě různé trysky, jeden vysokotlaká a druhá vodo vzdušná. Vstupní teplota chladící vody byla 10 stupňů C, 20stupňů C, 30 stupňů C, 50 stupňů C, a 70 stupňů C.
English abstract
Dynamic secondary cooling models developed at ArcelorMittal Global R&D use online calculated surface temperatures at various slab positions to adjust secondary cooling water based on aim surface temperatures. The latest development for this model is full implementation of experimentally measured heat transfer coefficients determined as a function of spray water volume, position under the spray nozzle and slab surface temperature. Water inlet temperature can have a significant influence on the heat transfer coefficient and hence cooling efficiency of the sprays. The Heat Transfer and Fluid Flow Laboratory of Brno Technical University (Brno) conducted experiments to determine the effect of the incoming spray water temperature on the HTC. They tested two different nozzles, one hydraulic and the other air mist. The incoming spray temperatures were 10, 20, 30, 50, and 70 degree Celsius.
Keywords in Czech
Model tuhnutí, povrchová teplota bramy, součinitel přestupu tepla,sekundární chlazení
Keywords in English
Solidification model, Slab surface temperature, Heat transfer coefficients, Secondary cooling
RIV year
2014
Released
23.06.2014
Publisher
ASMET
Location
Graz, Austria
ISBN
978-3-200-03664-2
Book
Proceedings - 8th European Continuous Casting Conference
Pages from–to
1–10
Pages count
10
BIBTEX
@inproceedings{BUT108073,
author="Jaroslav {Horský} and Rudolf {Moravec} and Kenneth {Blazek} and Michal {Guzej},
title="THE EFFECT OF SPRAY WATER TEMPERATURE ON SECONDARY COOLING SPRAY HEAT TRANSFER COEFFICIENTS AND METHODS FOR IMPLEMENTING THE EFFECT IN A DYNAMIC COOLING CONTROL MODEL",
booktitle="Proceedings - 8th European Continuous Casting Conference",
year="2014",
month="June",
pages="1--10",
publisher="ASMET",
address="Graz, Austria",
isbn="978-3-200-03664-2"
}