摘要
The investigation of saturated boiling heat transfer was performed from porous surfaces in narrow space formed by two concelitric tubes with two open ends at atmospheric pressure. Experimental results show that for the grooved tubes with inserted tubes the boiling heat transfer coefficiellts increase with the decrease of gap size. The boiling critical heat flux decreases with the decrease of gap size. The grooved surfaces can also augment the critical heat flux. Sintered porous surfaces, in pool boiling, can enhance boiling heat transfer, but the boiling heat transfer from these surfaces is affected little by gap size of narrow spaces.
The investigation of saturated boiling heat transfer was performed from porous surfaces in narrow space formed by two concelitric tubes with two open ends at atmospheric pressure. Experimental results show that for the grooved tubes with inserted tubes the boiling heat transfer coefficiellts increase with the decrease of gap size. The boiling critical heat flux decreases with the decrease of gap size. The grooved surfaces can also augment the critical heat flux. Sintered porous surfaces, in pool boiling, can enhance boiling heat transfer, but the boiling heat transfer from these surfaces is affected little by gap size of narrow spaces.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
1997年第5期596-599,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金
关键词
沸腾传热
多孔表面
微小空间
传热
boiling heat transfer, narrow space, porous surfaces