摘要
目前市场上常见的7mm管径开缝翅片(又称桥片),分析其换热的原理,提出物理与数学模型,采用商业软件FLUENT计算其流动及换热特性。重点针对桥片在不同设计参数下的性能进行了数值研究,分析了横向管间距、纵向管间距、片间距和控制圆等对翅片换热能力的影响,还有入口风速对流动与换热特性的影响,最终提出能够取代目前已有的7mm管径的X型桥片的翅片。
Now there is always the 7mm diameter gap fin（also named bridge fin ）in air-conditioner market）, This article analyses the theory of heating exchange, Putting forward the math and physics models, at the same time we use the commer- cial soft-ware ＂FLUENT＂ to calculate the fluent and heating exchanging characteristic,, Especially research the bridge fin＇s per- formance in different design parameters situation, For example, we analyse the heating exchange influence in horizontal dis- tance and vertical distance between the pipes, fin distance and control circle, We also analyse the fluent and heating exchanging influence for incoming airflow speed, In the end we find out a new X style bridge fin to replace the current bridge fin.
出处
《日用电器》
2009年第11期27-33,共7页
ELECTRICAL APPLIANCES
关键词
换热器
开缝翅片(桥片)
传热
压降
Heating exchanger, Gap fin （bridge fin）, Heating transmittal, Pressure falling
