冷面结霜微细观特性的实验研究  

EXPERIMENTAL STUDIES OF MESOSCALE FROST FORMATION ON COLD SURFACES

作　　者：吴晓敏[1] 江航[1] 王维城[1] 

机构地区：[1]清华大学热能工程系,热科学与动力工程教育部重点实验室,北京100084

出　　处：《工程热物理学报》2008年第9期1545-1547,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50476011)

摘　　要：本文在不同工况下,对竖直和水平放置的裸铝面及疏水面结霜微细观过程进行了实验研究。对冷面上过冷水珠的存续时间、冻结粒径及其影响因素进行了讨论,并将裸铝面和疏水面结霜特性进行了对比,探讨了表面湿润性(如接触角等)及冷面方位(水平和竖直)等对结霜过程的影响。Mesoscale frost formations on a horizontal and a vertical bare aluminum and a hydrophobic surfaces were experimentally investigated using the microscopic observation technology.The charac- teristics of frost in terms of life time of the super-cooled condensate droplets,diameter of the freezing particles,and their influence factors were presented and discussed.The frosting characteristics on bare aluminum and hydrophobic surfaces were compared.The effects of surface wettability and surface orientation on fro...

关 键 词：结霜 微细观测 疏水 竖直表面 

分 类 号：TB611[一般工业技术—制冷工程]