首页|期刊导航|热科学学报（英文版）|Experimental Study of Flow Patterns and Improved Configurations for Pulsating Heat Pipes
热科学学报（英文版）2007，Vol.16Issue(1)：56-62,7.
Experimental Study of Flow Patterns and Improved Configurations for Pulsating Heat Pipes
Experimental Study of Flow Patterns and Improved Configurations for Pulsating Heat Pipes
摘要
Abstract
A series of experiments were performed on three types of closed loop pulsating heat pipes (PHPs), intending to investigate various kinds of flow patterns, and to develop some improved configurations for the PHPs. Optical visualization results indicated that there might exist three flow patterns, i.e. bubble-liquid slug flow, semi-annular flow and annular flow, corresponding to different working conditions. For a given geometry and an adequate fill ratio, the PHPs had the self-adjusting characteristic for the flow patterns (from slug flow to semi-annular and then to annular flow) to meet the demands of the increasing heat input. Two special configurations, one with alternately varying channel diameter, the other equipped with one section of thicker tube, were found to be advantageous in establishing and maintaining reliable circulation of the working fluid. The thermal performance of the PHPs was examined over a range of working conditions. Comparing with the normal PHP with uniform diameter,either of the improved PHPs exhibited higher thermal performance.关键词
pulsating heat pipe/flow patterns/improved configurationsKey words
pulsating heat pipe/flow patterns/improved configurations分类
数理科学引用本文复制引用
Shi LIU,Jingtao LI,Xiangyuan DONG,Huanzhuo CHEN..Experimental Study of Flow Patterns and Improved Configurations for Pulsating Heat Pipes[J].热科学学报（英文版）,2007,16(1):56-62,7.基金项目
The authors are grateful for the financial support of this work by the National Natural Science Foundation of China under contract 60672151 and 60532020. （）
