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Generalized constructal optimization for solidification heat transfer process of slab continuous casting based on heat loss rate

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  • Feng, Huijun
  • Chen, Lingen
  • Xie, Zhihui
  • Ding, Zemin
  • Sun, Fengrui

Abstract

Based on constructal theory, generalized constructal optimization of a solidification heat transfer process of slab continuous casting is carried out by taking a complex function as optimization objective. The complex function is composed of the functions of the heat loss rate and surface temperature gradient of the slab subjected to the constraints of shell thickness, surface temperature and liquid core length of the slab. For the specified total water flow rate, the “optimal construct” of the water distribution in the secondary cooling zone is obtained. Comparing the optimal results with the initial ones, it is shown that the complex function, the functions of the heat loss rate and the surface temperature gradient after optimization are decreased by 35.04%, 2.14% and 59.48%, respectively. Therefore, the scheme of the “optimal construct” of the water distribution reduces the heat loss rate and surface temperature gradient of the slab simultaneously, that is, improves its energy retention and quality simultaneously. The optimization results obtained in this paper can provide some guidelines for parameter designs and dynamic operations of the solidification heat transfer process of slab continuous casting.

Suggested Citation

  • Feng, Huijun & Chen, Lingen & Xie, Zhihui & Ding, Zemin & Sun, Fengrui, 2014. "Generalized constructal optimization for solidification heat transfer process of slab continuous casting based on heat loss rate," Energy, Elsevier, vol. 66(C), pages 991-998.
    • Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:991-998
    DOI: 10.1016/j.energy.2013.12.067
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    Citations

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    Cited by:

    1. Liu, Xiong & Chen, Lingen & Feng, Huijun & Qin, Xiaoyong & Sun, Fengrui, 2016. "Constructal design of a blast furnace iron-making process based on multi-objective optimization," Energy, Elsevier, vol. 109(C), pages 137-151.
    2. Hu, Xianzhong & Yu, Qingbo, 2018. "Effect of the elevated initial temperature on the laminar flame speeds of oxy-methane mixtures," Energy, Elsevier, vol. 147(C), pages 876-883.
    3. Feng, Huijun & Xie, Zhuojun & Chen, Lingen & Wu, Zhixiang & Xia, Shaojun, 2020. "Constructal design for supercharged boiler superheater," Energy, Elsevier, vol. 191(C).
    4. Liu, Changxin & Xie, Zhihui & Sun, Fengrui & Chen, Lingen, 2017. "Exergy analysis and optimization of coking process," Energy, Elsevier, vol. 139(C), pages 694-705.
    5. Sun, Yongqi & Seetharaman, Seshadri & Liu, Qianyi & Zhang, Zuotai & Liu, Lili & Wang, Xidong, 2016. "Integrated biomass gasification using the waste heat from hot slags: Control of syngas and polluting gas releases," Energy, Elsevier, vol. 114(C), pages 165-176.
    6. Pantula, Priyanka D. & Mitra, Kishalay, 2019. "A data-driven approach towards finding closer estimates of optimal solutions under uncertainty for an energy efficient steel casting process," Energy, Elsevier, vol. 189(C).
    7. Feng, Huijun & Chen, Lingen & Xie, Zhihui & Sun, Fengrui, 2015. "“Disc-point” heat and mass transfer constructal optimization for solid–gas reactors based on entropy generation minimization," Energy, Elsevier, vol. 83(C), pages 431-437.
    8. Salimpour, Mohammad Reza & Menbari, Amir, 2015. "Analytical optimization of constructal channels used for cooling a ring shaped body based on minimum flow and thermal resistances," Energy, Elsevier, vol. 81(C), pages 645-651.
    9. Liu, Xiong & Feng, Huijun & Chen, Lingen & Qin, Xiaoyong & Sun, Fengrui, 2016. "Hot metal yield optimization of a blast furnace based on constructal theory," Energy, Elsevier, vol. 104(C), pages 33-41.
    10. Gong, Changming & Si, Xiankai & Wang, Kang & Wei, Fuxing & Liu, Fenghua, 2018. "Numerical analysis of carbon monoxide, formaldehyde and unburned methanol emissions with ozone addition from a direct-injection spark-ignition methanol engine," Energy, Elsevier, vol. 144(C), pages 432-442.
    11. Tang, Wei & Feng, Huijun & Chen, Lingen & Xie, Zhuojun & Shi, Junchao, 2021. "Constructal design for a boiler economizer," Energy, Elsevier, vol. 223(C).

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