制冷学报2017，Vol.38Issue(4)：44-49,6.DOI:10.3969/j.issn.0253-4339.2017.04.044
冷柜门封吸合面水蒸气渗透速率的计算方法
Calculation Method for Water Vapor Permeation Rate through Contact Surface of Refrigerator Seals
摘要
Abstract
Air pressure inside a refrigerator changes periodically when the temperature of the refrigerator fluctuates around the set value.Mass transfer occurs through the suction surface of refrigerator seals between air inside and outside the refrigerator.Water vapor can permeate through the contact surface,leading to frosting and an increase in thermal load in the refrigerator.To reduce the permeation of water vapor,the calculation method of water vapor permeation through refrigerator seals is developed in this paper.The permeable passage scale of the contact surface is determined to be the magnitude of μm with the observation of the seal surface feature,which is much larger than that of the mean free path of the water molecules,determines that a viscous flow occurs when water vapor permeates through the surface.A formula of water vapor permeation is established based on Darcy's law of viscous flow.The permeation coefficient is fitted with the experiment results of water vapor permeation of the contact surface.The water vapor permeation values calculated through the formula are compared with the experimental data,and the results show that the deviation of water vapor permeation predicted by the established formula is less than 15％,which indicates that the formula can be used to calculate the water vapor permeation through the contact surfaces of refrigerator seals.关键词
冷柜/门封/水蒸气/渗透速率Key words
refrigerator/seal/water vapor/permeation rate分类
通用工业技术引用本文复制引用
许旭东,赵丹,夏广辉,丁国良,胡海涛..冷柜门封吸合面水蒸气渗透速率的计算方法[J].制冷学报,2017,38(4):44-49,6.基金项目
国家自然科学基金(51506117)和中国博士后基金(2015M581610)资助项目.(The project was supported by the National Natural Science Foundation of China(No.51506117)&China Postdoctoral Science Foundation (No.2015M581610).)本文受上海市优秀学术带头人计划(16XD1401500)项目资助.(The project was supported by the Program for Excellent Academic Leaders of Shanghai (No.16XD1401500).) （51506117）
