摘要
为研究百叶窗翅片空气侧的传热和流动特性,建立了换热器的三维模型并进行数值模拟,通过计算得出传热与阻力特性与实验关联式吻合较好;同时对不同百叶窗倾角和百叶窗间距的模型进行了计算,比较发现倾角为27°的百叶窗翅片的传热最好;翅片间距不同,对应的传热最好的百叶窗间距不同;阻力随着百叶窗倾角和百叶窗间距的增大而增大。计算结果为换热器优化设计提供了依据。
A three dimensional numerical model was established for heat exchanger with louvered fin, and numerical simulation in air side heat transfer and fluid flow characteristics was conducted. It is found that the heat transfer and friction performance are in good agreement with the correlations in the literatures. The heat transfer performance of different louver angles and louver pitches was numerically studied. It is resulted that the heat transfer performance is the best for the louver angle at 27~ , and with the different pin pitch, the best louver pitch is different, and the pressure drop increases with the increasing of the louver angle and louver pitch. The model developed in this paper could be used for the optimal design of heat exchanger.
出处
《建筑热能通风空调》
2009年第1期6-9,共4页
Building Energy & Environment
基金
国家863计划项目(2007AA05Z225)
关键词
百叶窗翅片
三维
数值模拟
传热特性
louvered fin, three dimensional, numerical simulation, heat transfer performance
