摘要
为研究平直翅片管式捕水器换热性能,设计了一种真空捕水器实验系统,并对其换热性能进行测试,系统运行约450 s,真空室内的模拟热源温度从80℃降至25℃,凝结水量约2.9 kg。实验结果表明:蒸发动力越高,水蒸发越剧烈;捕水器凝结水蒸气的峰值制冷量为45.0 kW,峰值传热系数约为53.68 W/(m^(2)·K),平均传热系数为38.34 W/(m^(2)·K);相比光管折流板式捕水器,平直翅片管式捕水器所需冷却时间缩短17%,凝结水量提高7.41%。
In order to study the heat transfer performance of vapor condenser with flat finned tube,an experimental system of vacuum cooling vapor condenser is designed and its heat transfer performance is tested.The system runs for about 450 s,the simulated heat source temperature in the vacuum chamber drops from 80℃to 25℃,and the condensed water is about 2.9 kg.The experimental results show that the higher the evaporation power is,the more intense the water evaporation is.The peak cooling capacity of condensate steam in the water catcher is 45.0 kW,the peak heat transfer coefficient is about 53.68 W/(m^(2)·K),and the average heat transfer coefficient is 38.34 W/(m^(2)·K).Compared with the vapor condenser with smooth tube,the cooling time of vapor condenser with flat finned tube is shortened by 17%and the quality of condensed water is improved by 7.41%.
作者
陆方瑀
盛健
周志钢
张华
LU Fangyu;SHENG Jian;ZHOU Zhigang;ZHANG Hua(University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai General Cooling Technology Co.,Ltd.,Shanghai 201201,China)
出处
《实验科学与技术》
2024年第4期19-24,共6页
Experiment Science and Technology
基金
上海市2020年度“科技创新行动计划”技术标准项目(20DZ2204400)
上海市科委科普项目(21DZ2305500)。
关键词
真空预冷
凝结换热
传热传质
捕水器
vacuum precooling
condensation heat transfer
heat and mass transfer
vapor condenser
