制冷2025，Vol.44Issue(3)：24-28,5.DOI:10.3969/J.ISSN.1005-9180.2025.03.0006
制冷系统冷表面结霜性能的实验研究
Experimental Study on Frosting Performance of Different Cold Surfaces
摘要
Abstract
Air source heat pump units have been widely used worldwide due to their high efficiency and environmental protection advantages.However,when using air source heat pumps in cold and humid areas,frosting on the surface of the outdoor unit coil is inevitable.The phenomenon of frosting on the surface is very serious,and the frost layer will become thicker,which increases the thermal resistance of the heat exchanger and seriously hinders the heat exchange between the evaporator and the environment,thereby affecting the efficient operation of the heat pump equipment.This article measured the contact angle of fins made of different coating materials or materials processed by different processes,and established a frosting experimental platform and designed small-scale frosting experiments.By testing the surface droplet formation and initial frost crystal growth processes of three different materials with contact angles of 22.3 °,58.1 °,and 121.5 ° at temperatures of 0 ℃,-5℃,and-10℃.The frost characteristics of surfaces with different contact angles and the variation of frost quality on single site areas in different environment temperature were obtained.Experimental studies have shown that the larger the material contact angle,the smaller the frost mass per unit area,and the better the surface heat transfer performance.关键词
结霜/接触角/表面/环境温度Key words
Frost/Contact Angle/Surface/Environment Temperature分类
能源科技引用本文复制引用
刘湘云,罗志高,陈伙南,徐浩荣..制冷系统冷表面结霜性能的实验研究[J].制冷,2025,44(3):24-28,5.基金项目
2024广东省普通高校重点领域项目(2024ZDZX3097)和2024年度校级科研项目(2024KKZYZ03) （2024ZDZX3097）
