等壁温条件下潜热型功能热流体换热强化机理的理论研究

从对流与导热的相似性出发，揭示了潜热型功能热流体强化换热的物理机制。基于等效比热模型，对影响速度充分发展的等壁温圆管内该类流体层流流动换热强化的各因素进行了敏感性分析，弄清了影响换热强化的主要因素及其强化换热的机理，并改进了内部流动传统的Nu定义，使之能完全表征功能热流体换热器的程度，并和外部流动的Nu定义统一，有助于内部流动和外部流动对流换热的统一评价。     

Convective heat transfer enhancement of laminar flow of latent functionally thermal fluid in a circular tube with constant heat flux: internal heat source model and its application

Latent functionally thermal fluid is a kind of new two-phase fluid, in which phase change material is microencapsulated and suspended in a conventional single-phase heat transfer fluid (fig. 1). Such a slurry is of much larger apparent specific heat than conventional single-phase fluids during the phase change period, which enhances the heat transfer rate between the fluid and the tube wall. The flow rate and pump power required can be reduced evidently by using the slurries …