Augmentation of flow boiling critical heat flux along microchanneled surfaces

作     者：项光明 彭晓峰 胡杭英 王补宣 

作者机构：Beijing 100084 China Thermal Engineering Department Tsinghua University 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：1997年第1期

页      面：77-85页

学科分类：080701[工学-工程热物理] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Project supported by the National Natural Science Foundation of China 

主　　题：critical heat flux heat transfer enhancement microcbanneled structure capillary flow. 

摘      要：Experiments were conducted to investigate the characteristics of the flow boiling critical heat flux (CHF) and transition boiling for liquid flowing through a heated surface with longitudinal microchannels machined into the surface. A physical model of the capillary flow and rewetting in the microchannels on the heated surface was proposed to describe theoretically the CHF enhancement mechanism and transition boiling. The numerical predictions from the proposed model are in quite good agreement with the experimental measurements. These prove that the microchan-nel structure can evidently increase the CHF of a heated plate and augment the transition boiling heat transfer.