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辐射式电加热器中电加热芯的优化布置研究

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为降低辐射式电加热器的电加热芯表面温度以延长电加热器寿命,本文设计了四种电加热芯布置方式,采用Fluent模拟研究了电加热芯布置方式对其电加热器内部温度场和表面温度的影响规律.结果表明:在满足物料出口温度要求条件下,各方案电加热芯与氮气区域温度差分别为:方案一约为190 ℃,方案二约为210 ℃,方案三约为200 ℃,方案四约为180 ℃,方案四温度差相比其余方案降低10~30℃,温度场更加稳定;各方案电加热芯平均温度:方案一约为910 ℃;方案二约为950 ℃;方案三约为905 ℃;方案四约为860 ℃,电加热芯温度相比其他布置形式降低40~90 ℃.
Optimization Arrangement of Electric Heating Elements in Radiant Electric Heater
To reduce the surface temperature of the electric heating element and extend the service life of the radiant electric heater,four dif-ferent arrangements of electric heating elements were designed and the heat transfer characteristics of the radiant electric heater were studied and analyzed by Fluent simulation.The results show that under the condition of meeting the requirements of the material outlet temperature,the temperature differences between the heating element and the nitrogen gas region for each scheme are as follows:Scheme 1 is approximately 190 ℃,Scheme 2 is approximately 210 ℃,Scheme 3 is approximately 200 ℃,and Scheme 4 is approximately 180 ℃.Scheme 4 exhibits a temperature difference that is reduced by 10~30 ℃ compared to the other schemes,resulting in a more stable temperature field.The average temperatures of the heating elements for each scheme are as follows:Scheme 1 is approximately 910 ℃,Scheme 2 is approximately 950 ℃,Scheme 3 is approximately 905 ℃,and Scheme 4 is approximately 860 ℃.Therefore,Scheme 4 achieves a temperature reduction of 40~90 ℃ compared to other layout configurations,leading to a lower temperature for the heating elements.

radiant electric heaterelectric heating elementarrangementsurface temperatureFluenttemperature field

韩磊、金宇超、郭屹博、黄浩、胡自成、Hany S.El-Mesery

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江苏东方瑞吉能源装备有限公司,江苏 镇江 212132

江苏大学 能源与动力工程学院,江苏 镇江 212013

辐射式电加热器 电加热芯 布置方式 表面温度 Fluent 温度场

2024

工业加热
西安电炉研究所有限公司

工业加热

CSTPCD
影响因子:0.257
ISSN:1002-1639
年,卷(期):2024.53(9)
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