单向开缝翅片管换热器传热与阻力特性试验研究  

Experimental study on heat transfer and resistance characteristics of unidirectional slit fin-and-tube heat exchangers

作　　者：施兴兴 袁益超[1] Shi Xingxing;Yuan Yichao(Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,University of Shanghai for Science and Technology, Shanghai 200093, China)

机构地区：[1]上海理工大学上海市动力工程多相流动与传热重点实验室

出　　处：《低温与超导》2019年第7期87-91,共5页Cryogenics and Superconductivity

摘　　要：通过模化试验研究了翅片间距对单向开缝翅片管换热器翅片侧流动、传热特性的影响。结果表明:在翅片间距为2.1~2.5mm范围内,当Re<2700时,减小翅片间距能提高单向开缝翅片管换热器的传热性能,当Re>2700时,增大翅片间距能提高其传热性能;单向开缝翅片管换热器翅片侧的阻力随翅片间距的增大而减小;增大翅片间距能提高单向开缝翅片管换热器的综合性能。The effect of fin pitch on the flow and heat transfer performance of unidirectional slit fin-and-tube heat exchangers was studied by experiment. The results indicate that when fin pitch is within the range of 2.1 ~ 2.5 mm and Re is less than2700,the heat transfer performance of unidirectional slit fin-and-tube heat exchangers is improved with fin pitch decrease. When Re is greater than 2700,the heat transfer performance is improved with fin pitch increase. The resistance at fin side of unidirectional slit fin-and-tube heat exchangers decreases with the increase of fin pitch. The comprehensive performance of unidirectional slit fin-and-tube heat exchangers is improved with fin pitch increase.

关 键 词：单向开缝翅片管 传热 阻力 综合性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]