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Pot heat balance analysis in continuous galvanizing lines.

机译:连续镀锌生产线中的锅热平衡分析。

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摘要

Galvanizing is an energy intensive industry. Knowing how much energy is consumed when producing a certain product will help the company in determining which products can be produced to maximize profits. E-GEPDSS was built to explore the potential of saving energy in galvanizing lines by utilizing heat balance analysis. Heat transfer mechanisms of the heat losses for the pot presented in the heat balance are basic heat transfer concepts (i.e. radiation, convection, conduction, and specific heat.;The pot heat balance model was built and applied using the data collected from a host company during the plant visit. Sensitivity analyses were done to study the impact of changing values of input parameters on the total heat loss of main pot and pre-melt pot during the production as well as downtime (for the main pot).;The model was run and results were obtained and discussed. When there is no pre-melt pot, the largest heat loss is the heat required to melt ingots and maintain pot temperature. When there is a pre-melt pot in the process, the largest heat loss in the main pot is the heat loss from zinc coating. Heat losses from the surface, walls, air knife cooling effect, and steel strip are significant. Heat losses from the bottom and dross removal seem not to be significant. Emissivity, dimensions of the pot, temperature of the pot, and strip entry temperature have significant impact on the total heat loss. Total heat loss is most sensitive to changes of one of these parameters. Ambient temperature, thermal conductivity and wiping gas temperature do not have very much significant impact on the total heat loss. Total heat loss is not really sensitive to changes of one of these parameters. In the future, the model will be applied extensively to more galvanizing lines in order to help the galvanizers to have a more understanding about the energy consumption when producing their products.
机译:镀锌是一个能源密集型产业。知道生产某种产品时消耗了多少能量将有助于公司确定可以生产哪些产品以实现最大利润。 E-GEPDSS的建立是为了利用热平衡分析来探索镀锌生产线中节能的潜力。热平衡中显示的锅的热损失的热传递机制是基本的热传递概念(即辐射,对流,传导和比热)。使用从主机公司收集的数据建立并应用了锅的热平衡模型在工厂参观期间,进行了敏感性分析,以研究输入参数的变化对生产过程中主锅和预熔锅的总热损失以及停机时间(对于主锅)的影响。在没有预熔罐的情况下,最大的热损失是熔化铸锭并保持罐温度所需的热量;在有预熔罐的过程中,最大的热损失是主要的锅是锌涂层产生的热量损失,表面,墙壁,气刀冷却效果和钢带产生的热量损失很大,底部和残渣去除产生的热量损失似乎不大。 t,罐的温度以及带材的进入温度对总热量损失有重要影响。总热损失对这些参数之一的变化最敏感。环境温度,热导率和擦拭气体温度对总热量损失没有很大的影响。总热损失对这些参数之一的变化并不真正敏感。将来,该模型将广泛应用于更多的镀锌生产线,以帮助镀锌机在生产产品时更加了解能耗。

著录项

  • 作者

    Phuong, Quang Minh.;

  • 作者单位

    West Virginia University.;

  • 授予单位 West Virginia University.;
  • 学科 Engineering Industrial.;Engineering Mechanical.
  • 学位 M.S.
  • 年度 2010
  • 页码 112 p.
  • 总页数 112
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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