流体机械2017，Vol.45Issue(1)：82-86,5.DOI:10.3969/j.issn.1005-0329.2017.01.015
微通道光管换热器的运行特性及影响因素
Research on the Operation Performance and Influencing Factors of Micro-channel Smooth-tube Heat Exchanger
陈尚秋 1崔昊 2李娟1
作者信息
- 1. 苏州科技大学,江苏苏州 215011
- 2. 南京航空航天大学,江苏南京 210000
- 折叠
摘要
Abstract
In order to study the operation characteristics of a micro-channel smooth-tube heat exchanger,it was used as condenser in R22 refrigeration system,and both as condenser and evaporator simultaneously in R134a refrigeration system,so as to carry out experimental research.Furthermore,numerical simulation was conducted for air flow around a single micro-channel smooth tube.The experimental research shows that such micro-channel smooth-tube heat exchanger has high heat exchange coefficient and specific-area heat exchange amount.Moreover,capillary length and filling amount of refrigerant have different effect on the operation characteristics.Numerical simulation result for the single micro-channel smooth tube with external diameter of 0.7mm agrees well with the experimental data,and compared to the tube with larger diameter,the tube with smaller diameter has thinner boundary layer,which corresponds to stronger convective heat transfer process and more apparent heat transfer effect.关键词
微通道光管换热器/毛细管长度/制冷剂充注量/数值模拟/运行特性Key words
micro-channel smooth-tube heat exchanger/capillary length/filling amount of refrigerant/numerical simulation/operation characteristics分类
机械制造引用本文复制引用
陈尚秋,崔昊,李娟..微通道光管换热器的运行特性及影响因素[J].流体机械,2017,45(1):82-86,5.
