| 两种非灰气体辐射特性模型的研究 |
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| 引用本文： | 徐立,陈海耿,崔苗,陈宇. 两种非灰气体辐射特性模型的研究[J]. 材料与冶金学报, 2009, 8(1) |
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| 作者姓名： | 徐立 陈海耿 崔苗 陈宇 |
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| 作者单位： | 东北大学,材料与冶金学院,沈阳,110004 |
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| 摘 要： | 加热炉内的传热以非灰气体参与的辐射换热为主,准确求解炉气的辐射特性对于炉子热过程数学模型至关重要.本文考察了两种非灰气体辐射特性模型,即Edwards指数宽带模型和Leckner级数式,并应用这两种模型计算了二氧化碳和水蒸气的辐射特性.结果表明,在加热炉的工作温度和压力行程范围内,两种模型在总体上具有相当的精度,但是在实际生产过程中,却有必要根据模型的计算精度、采用的燃料不同和现场的硬件设备及其存储和耗时的要求,对二者的最优适用范围予以区分.
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| 关 键 词： | 非灰气体 辐射特性 Edwards指数宽带模型 Leckner级数式 |
Study of two radiative property models for non-gray gases |
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| XU Li,CHEN Hai-geng,CUI Miao,CHEN Yu. Study of two radiative property models for non-gray gases[J]. Journal of Materials and Metallurgy, 2009, 8(1) |
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| Authors: | XU Li CHEN Hai-geng CUI Miao CHEN Yu |
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| Affiliation: | School of Materials and Metallurgy;Northeastern University;Shenyang 110004;China |
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| Abstract: | Radiative heat transfer is the dominant mode in reheating furnace.Correctly solving radiative properties of gases is essential to mathematical model of reheating furnace.Edwards exponential wide band model and Leckner series were studied,further,the radiative properties of carbon dioxide and vapor were calculated accordingly.The results show that these two models have equivalent precision in reheating furnace predictions.Nevertheless,they should be distinguished in different temperature ranges in the proces... |
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| Keywords: | non-gray gas radiative property Edwards exponential wide band model Leckner series |
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