蜂窝板换热器内部流动传热特性研究  

Research on Fluid Flow and Heat Transfer Characteristics in Channel of Honeycombed Plate Heat Exchanger

作　　者：李隆键[1] 陈欢[1] 吴治娟[1] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《制冷学报》2012年第5期49-53,共5页Journal of Refrigeration

基　　金：重庆市科技攻关计划项目(2010GGC209)资助

摘　　要：建立了蜂窝板换热器湍流流动的物理数学模型,并应用数值分析方法模拟了蜂窝板换热器的三维流动传热过程;分析了不同雷诺数下通道内流动阻力和换热性能及其随雷诺数的变化规律,并与相同当量直径的平行平板通道的流动换热性能进行了对比。结果表明,蜂窝板换热器在换热系数提高的同时流动阻力也增大了,在雷诺数Re=3000~15000的范围内,其传热努塞尔数比平行平板增大了0.93~2.12倍,阻力系数增大了2.24~2.35倍。最后从场协同理论的角度分析了蜂窝板强化传热的机理。The three dimensional physical model and mathematical model of turbulent flow and heat transfer in the channel of honeycombed plate heat exchanger were established,and the corresponding flow field and temperature field was numerically simulated.The heat transfer and pressure drop characteristics of the channel were investigated under different Reynolds number.The computed results showed that both the heat transfer coefficient and pressure drop of the channel were obviously increased along with Reynolds number.On the other hand the characteristics of heat transfer and pressure drop of the channel were compared with that of the parallel plate channels.At last,the mechanism of the heat transfer enhancement was analyzed according to fields synergy principle.

关 键 词：工程热物理 蜂窝板 强化传热 数值模拟 场协同 

分 类 号：TB611[一般工业技术—制冷工程] TK172[动力工程及工程热物理—热能工程]