| 非共沸混合工质水平管内凝结换热折算因子的实验关联 |
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| 引用本文： | 李俊明,吴业正,王补宣.非共沸混合工质水平管内凝结换热折算因子的实验关联[J].工程热物理学报,1997(5). |
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| 作者姓名： | 李俊明 吴业正 王补宣 |
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| 作者单位： | 清华大学热能工程系!北京100084(李俊明，王补宣)，西安交通大学能源与动力工程学院!西安710049(吴业正) |
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| 摘 要： | 1前言前文山提出了计算环状流和波状分层流型下非共沸混合工质在水平管内凝结的换热系数的折算方法。租界面温度Ti的取值对计算结果影响很大。现在常用的方法是根据液膜和气相区传热传质的经验公式确定问，不仅计算工作量大，且无公认的计算方式。这给工程计算带来许多不便。本文取Ti二（Tv十几w，即气相温度Tv和壁面温度见的算术平均值，以计算相界面上的平衡参数，并将前文中的折算因子计算式改为如下形式：对环状流将由于相界面温度的取法所引起的误差归于用实验数据确定的经验系数A、B与经验指数p、q。式中Ja为雅各布数，无量纲温度0…
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| 关 键 词： | 环状流 波状分层流 流动凝结 折算因子 |
EXPERIMENTAL CORRELATION OF CONVERSION FACTORS FOR REFRIGERANT VAPOR MIXTURES CONDENSED IN A HORIZONTAL TUBE |
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| LI Junming WU Yezheng WANG Buxuan.EXPERIMENTAL CORRELATION OF CONVERSION FACTORS FOR REFRIGERANT VAPOR MIXTURES CONDENSED IN A HORIZONTAL TUBE[J].Journal of Engineering Thermophysics,1997(5). |
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| Authors: | LI Junming WU Yezheng WANG Buxuan |
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| Abstract: | An experimental investigation was conducted to investigate the influence of two-phase flow both in annular and wavy stratifled flow patterns on condensation coefficients of refrigerant R22/R152a vapor mixtures inside the horizontal tubes. The conversion factor of heat transfer coefficient, , referred a pure medium, for a binary nonazeotropic mixture was correlated from experimental data. The effect of flow patterns and mass fraction on the condensation heat transfer coefficient were discussed briefly. |
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| Keywords: | annular flow patterns wavy stratified flow patterns flow condensation conversion factor |
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