河南科技大学学报（自然科学版）2024，Vol.45Issue(1)：19-26,34,9.DOI:10.15926/j.cnki.issn1672-6871.2024.01.003
强制对流下翅片管蒸发器表面结霜实验
Frosting Surface of Finned Tube Evaporator under Strong Convection
摘要
Abstract
Frosting on the surface of finned tube evaporator was one of the main adverse factors that hindered the efficient operation of refrigeration system.A visual experimental platform for frosting on the surface of finned tube of evaporator under forced convection was built by using constant temperature and humidity chamber.The dynamic growth process of frost layer was recorded in real time with air temperature 0～8 ℃,relative humidity 55％～75％and head wind speed 0.8～2.4 m/s.The effects of ambient temperature,relative humidity and head-on wind speed on frost growth characteristics and heat transfer performance of evaporator were studied.The results show that ambient temperature and head-on wind speed are the main factors affecting frosting of evaporator.When frosting for 50 min,the frost thickness under the ambient temperature of 0 ℃ is 12.78％higher than that under the ambient temperature of 8 ℃,and the frost thickness under the wind speed of 2.4 m/s is 14.66％higher than that under the wind speed of 0.8 m/s.The frost amount and heat transfer increase the same trend.In the early stage of frosting,the greater the relative humidity,the greater the heat transfer.In the later stage of frosting,the lower the relative humidity,the greater the heat transfer.The correlation between the environmental parameters and the time of heat transfer is obtained.关键词
翅片管蒸发器/可视化/结霜/霜层生长/强制对流Key words
finned tube evaporator/visualization/frosting/frost layer growth/forced convection分类
通用工业技术引用本文复制引用
陈清华,陆育,关维娟,季家东,王建刚..强制对流下翅片管蒸发器表面结霜实验[J].河南科技大学学报（自然科学版）,2024,45(1):19-26,34,9.基金项目
国家自然科学基金项目(52175070) （52175070）
安徽理工大学环境友好材料与职业健康研究院研发专项基金资助项目(ALW2021YF12) （ALW2021YF12）
