EXPERIMENTAL INVESTIGATION ON THE HEAT TRANSFER AND FLOW RESIS-TANCE CHARACTERISTICS OF A SPECIAL-SHAPED SPIRALLY FLUTED TUBES
EXPERIMENTAL INVESTIGATION ON THE HEAT TRANSFER AND FLOW RESIS-TANCE CHARACTERISTICS OF A SPECIAL-SHAPED SPIRALLY FLUTED TUBES
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Hai-ting Cui
中科院分区：
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作者：
Hai-ting Cui
在波纹槽管的基础上，开发了一种新型强化传热管。对其中5根不同结构参数的换热管进行了一系列的实验测试，研究了换热管的传热特性和流体力学特性。在测试期间，Re保持在8，000至30，000之间。所有实验数据都是在管外冷凝条件下获得的。对大量的实验数据进行了多元线性回归分析，得到了高精度的传热系数与流动阻力的统计关联式。分析了影响传热和流动的主要因素，为换热器的设计和改造提供了科学依据。
Based on the spirally fluted tubes, a new type tube for heat transfer enhancement is developed. On 5 of each tubes with different structural parameters, a set of experimental tests are proceeded to investigate the characteristics of heat transfer and hydromechanics. During test, Re is kept in between 8,000 to 30,000. All experiment data are gained under condensate conditions outside the tubes. The great amount of experimental data are treated by multivariable linear regression analysis, and therefore, a statistical correlations with a high accuracy between the coefficient of heat transfer and flow resistance are developed. By which the main factors affecting heat transfer and flow are also analyzed, and a scientific basis for designing or/and reforming heat exchangers is provided.