小管径三排管开缝翅片传热特性的实验与数值研究  

EXPERIMENTAL AND NUMERICAL STUDY ON HEAT TRANSFER CHARACTERISTICS OF THREE-ROW SLOTTED FINS WITH SMALL DIAMETERS

作　　者：吴志根[1] 戴艳俊[1] 陶文铨[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2009年第11期1910-1912,共3页Journal of Engineering Thermophysics

基　　金：国家973项目(No.G2007BC206602)

摘　　要：本文对应用于二氧化碳跨临界空调制冷循环的三排管小管径开缝翅片管换热器空气侧的传热及阻力性能进行了实验与数值研究,数值模拟结果与实验值的最大偏差仅为10%。此外,通过四种途径研究了倾角对换热的影响,发现倾角有利于换热强化但换热量的增加不及压降的增加。Heat transfer and fluid flow characteristics on the air side in three-row slotted i-in-and-tube heat transfer surfaces with small diameters applied in a trans-critical CO2 air-conditioning or refrigeration cycle are studied experimentally and numerically. All the numerical results are in agreement with the related test data within 10% deviation. Besides, influences of a slotted inclination angle on heat transfer are analyzed with four different methods. It is found that the slotted inclination angle could enhance heat transfer with more evident pressure drop.

关 键 词：开缝翅片 实验研究 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]