化工学报2015，Vol.66Issue(Z1)：60-64,5.DOI:10.11949/j.issn.0438-1157.20150325
疏水表面结霜初期液滴生长的理论分析
Theoretical analysis of droplets growth in early stage of frosting on hydrophobic surfaces
摘要
Abstract
Droplets condensation and growth in the early stage of frosting on hydrophobic surfaces was researched under the natural convection condition. A heat transfer and growth model considered noncondensable gas was developed to clear the influences of surface contact angle and surface temperature on droplets growth. The results show that the two main thermal resistances during the droplet growth stage are the conduction thermal resistance inside the droplet and the phase interface thermal resistance, and both the two thermal resistances increase with surface contact angle, so droplets have a lower growth rate on surface with big contact angle. In addition, the droplets grow faster on surfaces with lower temperature, because colder surfaces could cause bigger heat transfer temperature differences.关键词
表面/冷凝/液滴/生长/传热/热阻Key words
surface/condensation/droplet/growth/heat transfer/thermal resistance分类
能源科技引用本文复制引用
吴晓敏,褚福强,陈永根..疏水表面结霜初期液滴生长的理论分析[J].化工学报,2015,66(Z1):60-64,5.基金项目
国家自然科学基金项目(51476084) （51476084）
清华大学自主科研计划项目(20131089319).Foundation item: supported by the National Natural Science Foundation of China (51476084) and the Tsinghua University Initiative Scientific Research Program (20131089319). （20131089319）
