| 矩形窄通道空气自然对流换热特性实验研究 |
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| 引用本文： | 卢庆,秋穗正,叶忠昊,苏光辉.矩形窄通道空气自然对流换热特性实验研究[J].工程热物理学报,2010,31(1). |
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| 作者姓名： | 卢庆 秋穗正 叶忠昊 苏光辉 |
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| 作者单位： | 1. 西安交通大学动力工程多相流国家重点实验室,陕西西安,710049;西安交通大学核科学与核技术学院,陕西西安,710049
2. 西安交通大学核科学与核技术学院,陕西西安,710049 |
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| 摘 要： | 以电加热的方式,对高为800mm,宽为60 mm,间隙分别为1.0 mm,1.8 mm和2.5 mm的竖直矩形流道内空气自然对流换热特性进行了实验研究,同时考察了在实验段出口是否有绝热烟囱对自然对流换热特性的影响。结果表明,在流道间隙为1.0 mm和1.8 mm的情况下,烟囱对自然对流换热特性的影响不明显。在间隙为2.5 mm时,烟囱的存在削弱了自然对流换热。同时所有实验数据可以按照有无烟囱的情况分别用统一的实验关联式进行拟合。
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| 关 键 词： | 矩形窄缝通道 自然对流 换热特性 烟囱 |
EXPERIMENTAL RESEARCH ON NATURAL HEAT TRANSFER OF AIR IN VERTICAL NARROW RECTANGULAR CHANNELS |
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| LU Qing,QIU Sui-Zheng,YE Zhong-Hao,SU Guang-Hui.EXPERIMENTAL RESEARCH ON NATURAL HEAT TRANSFER OF AIR IN VERTICAL NARROW RECTANGULAR CHANNELS[J].Journal of Engineering Thermophysics,2010,31(1). |
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| Authors: | LU Qing QIU Sui-Zheng YE Zhong-Hao SU Guang-Hui |
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| Institution: | 1;2;1;2;1;2;1.State key laboratory of Multi Phase Flow in Power Engineering;Xi'an Jiaotong University;Xi'an 710049;China;2.School of Nuclear science and technology;China |
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| Abstract: | Experimental researches on natural heat transfer of air in three vertical narrow rectangular channels are conducted.These three channels are 800 mm in length,60 mm in width and 1.0 mm, 1.8 mm and 2.5 mm in gap depth,respectively.By electrically heated with stainless heating rod, the natural heat transfer characteristics are investigated with or without an adiabatic chimney at the channel outlet.It is found that the impact of chimney on natural heat transfer characteristics is slight of channel with 1.0 mm a... |
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| Keywords: | vertical rectangular channel natural convection heat transfer chimney |
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