Evaporation/boiling heat transfer characteristics in an artery porous structure
Bai Lizhan
Zhang Lianpei
Guo Jinghui
Lin Guiping
Bu Xueqin
Wen Dongsheng
· 2016
期刊名称：
Applied Thermal Engineering
2016 年
104 卷
摘要：
Nucleate boiling is one of the most efficient and effective heat transfer modes, but is limited by the critical heat flux (CHF). An innovative artery porous structure was proposed in this work to enhance the CHF based on the concept of "phase separation and modulation" by forming individual flow paths for liquid supply and vapor venting while keeping the liquid/vapor interface located in the porous structure. In the experiment, the porous structure was made of sintered copper microparticles, multiple arteries were machined directly on the heated surface, and water was employed as the working fluid. The experimental results were compared with those on a flat surface, and a unique evaporation/boiling curve for the artery porous structure was revealed. The experiment validated the principle proposed here for CHF enhancement, and a maximum heat flux of 416 W/cm
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