| 多孔介质中的相变传热特性及其在建筑物节能中的应用 |
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| 引用本文： | 黄晓明,刘伟,朱光明,王崇琦.多孔介质中的相变传热特性及其在建筑物节能中的应用[J].太阳能学报,2002,23(5):615-621. |
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| 作者姓名： | 黄晓明 刘伟 朱光明 王崇琦 |
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| 作者单位： | 华中科技大学能源与动力工程学院,武汉,430074 |
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| 基金项目： | 国家重点基础研究发展规划 (No .G2 0 0 0 0 2 63 0 3 )，国家自然科学基金 (No .5 99760 10 )，教育部博士点专项基金 (No.2 0 0 0 0 4873 1)资助项目 |
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| 摘 要： | 将非饱和多孔介质应用于建筑节能，使低品位，低密度的太阳能通过工质的相变得以利用，对实现建筑物的采暖具有应用价值。通过对非饱和多孔材料内的二维流场，温度场以及蒸发量场的数值计算，分析了两端开口的圆柱环型多孔腔内非饱和多孔介质的传热传质特性，研究了流体雷利数及边界条件的变化对多孔床热质迁移的影响。
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| 关 键 词： | 多孔介质 相变传热 建筑物节能 太阳能利用 环型圆柱 非饱和 数值模拟 |
| 文章编号： | 0254-0096(2002)05-0615-07 |
| 修稿时间： | 2001年10月9日 |
THE CHARACTERISTIC OF HEAT TRANSFER IN POROUS MEDIA WITH FLUID PHASE CHANGE AND ITS APPLICATION IN BUILDING ENERGY SAVING |
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| Huang Xiaoming,Liu Wei,Zhu Guangming,Wang Chongqi.THE CHARACTERISTIC OF HEAT TRANSFER IN POROUS MEDIA WITH FLUID PHASE CHANGE AND ITS APPLICATION IN BUILDING ENERGY SAVING[J].Acta Energiae Solaris Sinica,2002,23(5):615-621. |
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| Authors: | Huang Xiaoming Liu Wei Zhu Guangming Wang Chongqi |
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| Abstract: | The exploitation and utilization of new energy sources (especially solar energy) is very important for the development of the civil economic of our country. The application of unsaturated porous media in building energy saving is benefit for the utilization of solar energy of which the quality and density is both low. Because of phase change of the working media in porous media, the heat transferred by the porous media is more valuable than heat got directly from natural solar energy. The numerical simulation of 2D fluid field, temperature field and evaporation rate field for an annular cylinder porous bed with open ends is given. According to the obtained data, the heat transfer characteristics and the influence of Ra number and different boundary condition on the porous media is especially discussed. |
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| Keywords: | utilization of solar energy building energy saving annular cylinder unsaturated porous media numerical simulation |
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