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Experimental investigation on the thermal performance of cooling pipes embedded in a graphitization furnace

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  • Shen, Chong
  • Zhang, Maoyong
  • Li, Xianting

Abstract

A system of embedding pipes in the graphitization furnace to recover heat and accelerate cooling was proposed recently. Numerical study has shown the potential of this approach, but it has not been applied and evaluated in the real environment. Hence in this study, the practical requirements of the pipe-embedded system are discussed, and alternative solutions are proposed and compared. The heat recovery and cooling effect of the modified system is experimentally investigated through a complete heating and cooling process. The influence of fan frequency and external insulation is discussed. The safety of pipes is checked. The results show that: (1) the improved system functions well in the practical condition and the highest temperature of the pipes is 1100 °C and in a safe range; (2) in total 28.2% of the heating energy is recovered and one third of the cooling time is saved, and a high fan frequency will lead to both a high heat recovery rate and high fan energy consumption, but the recovered heat is much higher than the fan power; (3) the top surface takes up 67% of the total heat dissipation and the external insulation can reduce half of the heat dissipation in the heating period.

Suggested Citation

  • Shen, Chong & Zhang, Maoyong & Li, Xianting, 2017. "Experimental investigation on the thermal performance of cooling pipes embedded in a graphitization furnace," Energy, Elsevier, vol. 121(C), pages 55-65.
    • Handle: RePEc:eee:energy:v:121:y:2017:i:c:p:55-65
    DOI: 10.1016/j.energy.2016.12.131
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    Cited by:

    1. Lan, Yuncheng & Zhao, Xudong & Zhang, Wei & Mu, Lianbo & Wang, Suilin, 2022. "Investigation of the waste heat recovery and pollutant emission reduction potential in graphitization furnace," Energy, Elsevier, vol. 245(C).
    2. Luo, Yongqiang & Zhang, Ling & Bozlar, Michael & Liu, Zhongbing & Guo, Hongshan & Meggers, Forrest, 2019. "Active building envelope systems toward renewable and sustainable energy," Renewable and Sustainable Energy Reviews, Elsevier, vol. 104(C), pages 470-491.

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