| R410A在水平内螺纹管中沸腾换热实验研究 |
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| 引用本文： | 张建国,陶乐仁,王金锋,王伟.R410A在水平内螺纹管中沸腾换热实验研究[J].低温与超导,2009,37(12). |
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| 作者姓名： | 张建国 陶乐仁 王金锋 王伟 |
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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,200093 |
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| 摘 要： | 对于非共沸混合制冷剂R410A在外径9.52mm、5mm的两种不同的几何参数的内螺纹的流动沸腾换热进行了实验研究,分析讨论了制冷剂质量流速、管外水流量变化、强化管的参数、强化管的压降对换热系数影响以及其机理。试验的结果表明:换热系数随着流量的增大而增大,管径的大小对换热系数的影响较大,在相同的流量下,9.52mm的换热系数比5mm的大到110%~230%,5mm管的压降比9.52mm的大200%~300%。
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| 关 键 词： | 非共沸混合制冷剂 R410A 沸腾换热 内螺纹管 |
Evaporation heat transfer of R410A flowing inside horizontal smooth and internally grooved tubes |
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| Zhang Jianguo,Tao Leren,Wang Jinfeng,Wang Wei.Evaporation heat transfer of R410A flowing inside horizontal smooth and internally grooved tubes[J].Cryogenics and Superconductivity,2009,37(12). |
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| Authors: | Zhang Jianguo Tao Leren Wang Jinfeng Wang Wei |
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| Institution: | Zhang Jianguo,Tao Le'ren,Wang Jinfeng,Wang Wei(University of Shanghai for science and technology,Shanghai 200093,China) |
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| Abstract: | The experimental study was carried out on the evaporation heat transfer of non-azeotropic refrigerant mixtures R410A flowing inside two internally grooved tubes of 9.52mm,5mm with different geometrical parameters.The influence and mechanism of mass flow rate,changes in external water flow pipe,geometrical parameters and the pressure drop of enhanced tubes on heat transfer coefficients were analyzed and discussed.Experimental results indicate that the heat transfer coefficient increases with the increasing f... |
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| Keywords: | R410A Non-azeotropic refrigerant mixture R410A Evaporation heat transfer Internally grooved tube |
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