| R134a水平微细管内流动沸腾换热的实验研究 |
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| 引用本文： | 丁杨,柳建华,叶方平,姜林林,鄂晓雪,吴昊.R134a水平微细管内流动沸腾换热的实验研究[J].制冷学报,2015(1):90-96. |
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| 作者姓名： | 丁杨 柳建华 叶方平 姜林林 鄂晓雪 吴昊 |
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| 作者单位： | 上海理工大学能源与动力工程学院;上海理工大学能源与动力工程学院;浙江新劲空调设备有限公司;上海理工大学能源与动力工程学院;上海理工大学能源与动力工程学院;上海理工大学能源与动力工程学院 |
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| 摘 要： | 本文对R134a在水平微细管内的流动沸腾进行了实验研究。实验测试段选用了内径为1 mm、2 mm、3 mm共3种不同的水平光滑不锈钢管,实验的饱和温度为5~30℃,热流密度为2~70 k W/m2,流量范围为200~1500 kg/(m2·s)。实验结果表明:相同条件下,干涸前2 mm管较3 mm管换热系数平均增幅为11.6%,1 mm管较2 mm管换热增幅为26.3%,1 mm管径换热系数比3 mm管径平均增大40.8%。随着管径的减小,换热系数在更低的干度开始减小,质量流速和强制对流蒸发作用对换热系数的影响变小,热流密度的影响依然显著;塞状流和弹状流区域减小,泡状流和环状流区域增大。
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| 关 键 词： | R134a 微细管 流动沸腾 干涸 换热系数 |
Experimental Studies on Flow Boiling of R134a
in Horizontal Small Tubes |
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| Ding Yang,Liu Jianhu,Ye Fangping,Jiang Linlin,E Xiaoxue and Wu Hao.Experimental Studies on Flow Boiling of R134a
in Horizontal Small Tubes[J].Journal of Refrigeration,2015(1):90-96. |
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| Authors: | Ding Yang Liu Jianhu Ye Fangping Jiang Linlin E Xiaoxue and Wu Hao |
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| Affiliation: | School of Energy and Power Engineering, University of Shanghai for Science and Technology;School of Energy and Power Engineering, University of Shanghai for Science and Technology;Zhejiang Xinjing Air Conditioning Equipment Co., Ltd.;School of Energy and Power Engineering, University of Shanghai for Science and Technology;School of Energy and Power Engineering, University of Shanghai for Science and Technology;School of Energy and Power Engineering, University of Shanghai for Science and Technology |
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| Abstract: | |
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| Keywords: | R134a mini-channel flow boiling dryout heat transfer coefficient |
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