摘要
本文进行了CO<sub>2</sub>-水混合蒸气在不锈钢V形纵槽表面进行了凝结换热实验研究。结果表明,CO<sub>2</sub>质量浓度在80%<sup>9</sup>4%范围内,两V形纵槽表面的凝结换热特性均优于光滑平板。1 mm×2 mm纵槽冷凝表面的凝结换热系数比平板提高了8.51%<sup>1</sup>5.4%。在20%<sup>9</sup>4%浓度范围内,1 mm×2 mm冷凝特性均优于0.5 mm×1 mm冷凝块,所以适当增加肋片的高度和肋间距在一定程度上可以强化冷凝传热过程。
The condensation heat transfer of CO_2-steam mixture on V-shaped stainless steel vertical fluted surface was investigated.It is shown that the heat transfer characteristics of two V-shaped vertical fluted surfaces were superior to flat plate within the CO_2 concentration range of 80%to 94%.The heat transfer coefficient of 1 mm×2 mm fluted surface increased 8.51%~15.4%than flat surface.The heat transfer characteristics of 1 mm×2 mm fluted surface were superior to the 0.5 mm×1 mm within CO2concentration range of 20%-94%,so the proper increase of the fin spacing and height can improve the heat transfer process.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2014年第5期986-990,共5页
Journal of Engineering Thermophysics
基金
国家973计划资助项目(No.2011CB707203)
科技部国际合作项目(No.2011DFA60290)
