| 螺旋扁管管外蒸汽冷凝双侧强化传热试验研究 |
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| 引用本文： | 杨胜,张莉,徐宏,赵力伟. 螺旋扁管管外蒸汽冷凝双侧强化传热试验研究[J]. 低温与超导, 2010, 38(10) |
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| 作者姓名： | 杨胜 张莉 徐宏 赵力伟 |
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| 作者单位： | 化学工程联合国家重点试验室,华东理工大学机械与动力工程学院,上海,200237;化学工程联合国家重点试验室,华东理工大学机械与动力工程学院,上海,200237;化学工程联合国家重点试验室,华东理工大学机械与动力工程学院,上海,200237;化学工程联合国家重点试验室,华东理工大学机械与动力工程学院,上海,200237 |
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| 基金项目： | 上海市重点学科建设项目 |
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| 摘 要： | 为促进螺旋扁管在冷凝换热装置上的应用,对螺旋椭圆管管外蒸汽冷凝工况下的传热特性进行了试验研究。研究结果表明,螺旋椭圆管在强化管内无相变对流传热的同时也可以强化管外冷凝传热。相同工况下,同圆管相比,所用螺旋椭圆扁管的总传热系数高11%-16%,管内传热系数高约18%,管外冷凝传热系数高约9%。并从二次流减薄传热边界层及冷凝表面利于排除冷凝液的角度,分析了螺旋椭圆扁管的双侧强化传热机理。
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| 关 键 词： | 旋椭圆管 蒸汽冷凝 双侧强化 |
Experimental research on double side enhanced heat transfer of water vapor condensation on spiral elliptical flat tube |
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| Yang Sheng,Zhang Li,Xu Hong,Zhao Liwei. Experimental research on double side enhanced heat transfer of water vapor condensation on spiral elliptical flat tube[J]. Cryogenics and Superconductivity, 2010, 38(10) |
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| Authors: | Yang Sheng Zhang Li Xu Hong Zhao Liwei |
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| Affiliation: | Yang Sheng,Zhang Li,Xu Hong,Zhao Liwei(State-Key Laboratory of Chemical Engineering,School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | In order to promote the application of spiral elliptical flat tube in heat exchangers,an experimental research was carried out on the double side enhanced heat transfer properties of spiral elliptical flat tube under water vapor condensation outside the tube.The results show that not only the convective heat transfer inside tube but also the condensation heat transfer outside tube can be enhanced.Under the same condition,compared with the smooth tube,the overall heat transfer coefficient of spiral elliptica... |
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| Keywords: | Spiral elliptical flat tube Vapor condensation Double side enhanced heat transfer |
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