几种闭式开关柜防凝露方法的模拟研究  

Numerical study of several anti-condensation methods for closed switch cabinet

作　　者：陈荣[1] 闫新[2] 张弛[1] 张利[1] 刘巍[2] 杨昆[2] 

机构地区：[1]国网天津市电力公司电力科学研究院,天津300384 [2]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《节能》2015年第9期26-31,2,共6页Energy Conservation

基　　金：国家重点基础研究发展计划(973计划)资助(项目编号:2013CB228302)

摘　　要：建立闭式开关柜中湿空气凝露现象的数学模型,对几种闭式开关柜防凝露的方法进行数值模拟研究,分析开关柜内湿空气相对湿度控制、柜内布置加热器、开关柜壁面加电阻丝、开关柜壁面添加保温层对开关柜内凝露现象的影响。结果表明:降低开关柜内空气湿度可以减小凝露现象,开关柜内加热器布置位置不同,防凝露效果也不同,对易凝露面加电阻丝加热及添加保温层均能有效防止凝露。A numerical model of convective heat and mass transfer is established for wet air condensing in closed switch cabinet.Several anti-condensation methods for closed switch cabinet are studied by numerical simulation,including the controlling of relative humidity of wet air in cabinet,installing heater,adding resistance wire in the cooling wall,and adding thermal insulators outside the cooling wall.The results demonstrate that reducing the humidity of wet air in cabinet could prevent wet air from condensing and different heater installing location could make some difference to the anti-condensation effects.Moreover,adding resistance wire and insulating layer to the wall which is susceptible to condensation could prevent condensation effectively.

关 键 词：开关柜 防凝露 湿空气 数值模拟 

分 类 号：TM591[电气工程—电器]