微翅管内R410A的流动沸腾传热特性  

Heat transfer characteristics of flow boiling in micro-fin tubes with R410A

作　　者：马虎根[1] 姜岗[1] 白健美[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《化工学报》2011年第1期41-46,共6页CIESC Journal

基　　金：国家自然科学基金项目(50876068)~~

摘　　要：进行了单管实验,对影响R410A在水平微翅管内传热系数的因素进行分析,获得了传热系数随质量流量、热通量及干度的变化关系,并对各种工况下的换热机理进行了分析和讨论。对不同几何参数的微翅管进行了实验比较,分析了微翅管几何结构参数对换热性能的影响。通过实验得到R410A在微翅管内流动沸腾传热系数,可为制冷换热器的设计提供可靠的依据。Flow boiling heat transfer performance of refrigerant R410A in horizontal micro-fin tubes with different geometric parameters was investigated.The dependence of forced flow boiling heat transfer coefficient on mass flow rate, heat flux and quality was studied and the mechanism of flow boiling heat transfer under each working condition was analyzed.For a comparison, the influences of the fin number and fin height on the heat transfer were also studied.The experimental data for R410A will provide a reliable base for design of evaporators used in refrigeration processes.

关 键 词：流动沸腾 R410A 微翅管 传热特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]