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Analysis of slab heating characteristics in a reheating furnace

Wang, Jin; Liu, Yiwei; Sundén, Bengt LU ; Yang, Ran; Baleta, Jakov and Vujanović, Milan (2017) In Energy Conversion and Management
Abstract

For a reheating furnace, an analysis of thermal efficiency depends on precise investigations of the combustion and flow characteristics inside a furnace. Especially, the flow field of the hot gas has significant influence on heating slabs. The slabs are heated up to the temperature over 1500. K, and then they are transported to the rolling mill. The heating efficiency is affected by many factors, such as fuel type, locations of both slabs and burners, thermal properties of slabs, geometry of slab supporting systems, and so on. In the paper, some efforts were made to simulate the thermo-fluid mechanical phenomenon inside the furnace. The slab heating characteristics in the reheating furnace were investigated by using the finite-volume... (More)

For a reheating furnace, an analysis of thermal efficiency depends on precise investigations of the combustion and flow characteristics inside a furnace. Especially, the flow field of the hot gas has significant influence on heating slabs. The slabs are heated up to the temperature over 1500. K, and then they are transported to the rolling mill. The heating efficiency is affected by many factors, such as fuel type, locations of both slabs and burners, thermal properties of slabs, geometry of slab supporting systems, and so on. In the paper, some efforts were made to simulate the thermo-fluid mechanical phenomenon inside the furnace. The slab heating characteristics in the reheating furnace were investigated by using the finite-volume method (FVM). The unsteady calculation was performed to obtain the temperature distribution by considering the movement of the slabs in the reheating furnace. To treat radiation emitted by the walls and the gas, numerical simulations were completed by employing ANSYS FLUENT. The configurations of skid posts and beams were also considered to evaluate the effect of the burner position. Results indicate that the case with 6 side burners has a higher heating efficiency both in the heating and soaking sections.

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author
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
Burner, Combustion, Reheating furnace, Slab, Walking beam
in
Energy Conversion and Management
publisher
Elsevier
external identifiers
  • scopus:85018586330
  • wos:000411537200076
ISSN
0196-8904
DOI
10.1016/j.enconman.2017.04.005
language
English
LU publication?
yes
id
abd61310-52dc-445b-8031-7d0f5e172f3c
date added to LUP
2017-05-24 13:32:55
date last changed
2018-01-16 13:19:45
@article{abd61310-52dc-445b-8031-7d0f5e172f3c,
  abstract     = {<p>For a reheating furnace, an analysis of thermal efficiency depends on precise investigations of the combustion and flow characteristics inside a furnace. Especially, the flow field of the hot gas has significant influence on heating slabs. The slabs are heated up to the temperature over 1500. K, and then they are transported to the rolling mill. The heating efficiency is affected by many factors, such as fuel type, locations of both slabs and burners, thermal properties of slabs, geometry of slab supporting systems, and so on. In the paper, some efforts were made to simulate the thermo-fluid mechanical phenomenon inside the furnace. The slab heating characteristics in the reheating furnace were investigated by using the finite-volume method (FVM). The unsteady calculation was performed to obtain the temperature distribution by considering the movement of the slabs in the reheating furnace. To treat radiation emitted by the walls and the gas, numerical simulations were completed by employing ANSYS FLUENT. The configurations of skid posts and beams were also considered to evaluate the effect of the burner position. Results indicate that the case with 6 side burners has a higher heating efficiency both in the heating and soaking sections.</p>},
  author       = {Wang, Jin and Liu, Yiwei and Sundén, Bengt and Yang, Ran and Baleta, Jakov and Vujanović, Milan},
  issn         = {0196-8904},
  keyword      = {Burner,Combustion,Reheating furnace,Slab,Walking beam},
  language     = {eng},
  month        = {04},
  publisher    = {Elsevier},
  series       = {Energy Conversion and Management},
  title        = {Analysis of slab heating characteristics in a reheating furnace},
  url          = {http://dx.doi.org/10.1016/j.enconman.2017.04.005},
  year         = {2017},
}