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  

作　　者：张寅平 胡先旭 郝磬 王馨 

机构地区：[1]ZHANG Yinping , HU Xianxu , HAO Qing & WANG Xin Department of Building Science, Tsinghua University

出　　处：《Science China(Technological Sciences)》2003年第2期131-140,共10页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.50076020);the Key Projects of Basic Research and Development of China(Grant No.G2000026309);the Excellent Young Faculty Foundation of the Ministry of Education of China.

摘　　要：This paper analyzes the convective heat transfer enhancement mechanism of latent heat functionally thermal fluid. By using the proposed internal heat source model, the influence of each factor affecting the heat transfer enhancement of laminar flow in a circular tube with constant heat flux is analyzed. The main influencing factors and the mechanisms of heat transfer enhancement are clarified, and the influences of the main factors on the heat transfer enhancement are quantitatively analyzed. A modified Nusselt number for internal flow is introduced to describe more effectively the degree of heat transfer enhancement for latent functionally thermal fluid.This paper analyzes the convective heat transfer enhancement mechanism of latent heat functionally thermal fluid. By using the proposed internal heat source model, the influence of each factor affecting the heat transfer enhancement of laminar flow in a circular tube with constant heat flux is analyzed. The main influencing factors and the mechanisms of heat transfer enhancement are clarified, and the influences of the main factors on the heat transfer enhancement are quantitatively analyzed. A modified Nusselt number for internal flow is introduced to describe more effectively the degree of heat transfer enhancement for latent functionally thermal fluid.

关 键 词：LATENT functionally thermal fluid  heat TRANSFER enhancement  microcapsule  phase change. 

分 类 号：TK124[动力工程及工程热物理—工程热物理]