等热流条件下潜热型功能热流体换热强化机理研究  

THEORETICAL ANALYSIS OF THE CONVECTIVE HEAT TRANSFER ENHANCEMENT OF LATENT FUNCTIONALLY THERMAL FLUID WITH CONSTANT HEAT FLUX

作　　者：胡先旭[1] 张寅平[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《工程热物理学报》2002年第2期224-226,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50076020);国家重点基础研究发展规划资助项目(No.G2000026309);教育部

摘　　要：本文分析了潜热型功能热流体强化换热的物理机制，并基于等效比热模型，对等热流条件下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．同时，改进了内部流动传统的Ｎμ定义。This paper analyzes the convective heat transfer enhancement mechanism of latent functionally thermal fluid. By using the effective specific heat capacity model, the influence of each factor affecting the heat transfer enhancement of laminar flow in the tube with constant heat flux is analyzed. In addition, a modification of the conventional Nusselt number definition for internal flow is introduced to describe the degree of heat transfer enhancement for latent functionally thermal fluid more effectively.

关 键 词：强化换热 微胶囊 相变 等效比热模型 等热流 NU 潜热型功能热流体 

分 类 号：TK123[动力工程及工程热物理—工程热物理]