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摘 要： 针对一种整体翅片式微通道换热器，采用CFD数值模拟的方法，对这种换热器空气侧的流动与传热特性进行了研究。分析了各翅片参数（长度、高度、间距）对换热器性能的影响，得到了较优化的翅片尺寸参数，同时用场协同的原理进行了解释。与传统微通道换热器空气侧性能进行了对比，结果表明：整体翅片式微通道换热器换热性能减小的情况下，压降得到更大的降低，空气侧总体性能有所提高。 关键词： 整体翅片 微通道 数值模拟 场协同 Numerical analysis on an integrated fin and micro-channel heat exchanger Jiong Li1 Shuangfeng Wang1 Wang Cai1 Weijun Zhang2 1 Key Lab. of Enhance Heat Transfer and Energy Conversion, Ministry of Education, South China University of Technology,Guangzhou 510640, Guangdong，PR China 2 Dongguan Gaobao Aluminium Mfy.Co. Ltd 523275, PR China Abstract: A new type of aluminum heat exchanger with integrated fin and micro-channel has been proposed. The air-side heat transfer and flow characteristics of the integrated fin and micro-channel heat exchanger are systematically analyzed by a 3D numerical simulation. The effect of flow depth, fin height, fin pitch and fin thickness at different Reynolds number is evaluated by calculating Colburn factor j and Fanning friction factor f, and analyzed from the view point of field synergy principle. The optimal geometrical dimensions are obtained. Compared with that of the traditional micro-channel heat exchangers, the air-side heat transfer performance of the integrated fin and micro-channel heat exchanger decreases. However, the friction resistance decreases even more and the overall performance is better than the traditional micro-channel heat exchangers. Keywords : Integrated fin and micro-channel heat exchanger; Fin geometry; Field synergy principle; Numerical simulation