管道式空氣電加熱器也高效、環保、節能的一種輻射型加熱器,管道加熱器通電后可在管道加熱器的垂直空間形成極強的寬譜定向輻射,管道加熱器將電能有效轉化為管道加熱器的遠紅外輻射能,管道加熱器直接傳遞給被烘干物,管道加熱器迅速轉化為分子熱運動,管道加熱器由內向外干燥,管道加熱器達到快速烘干定型的目的,并取得管道加熱器的顯著節能效果。
管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的碳(tan)化(hua)(hua)硅遠(yuan)紅(hong)(hong)外電熱(re)(re)(re)(re)板是(shi)用(yong)管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的涂(tu)有(you)金(jin)屬(shu)(shu)氧化(hua)(hua)物即遠(yuan)紅(hong)(hong)外線涂(tu)料的碳(tan)化(hua)(hua)硅板做輻(fu)射(she)元(yuan)件,管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的在元(yuan)件孔內(或(huo)槽內)裝進電熱(re)(re)(re)(re)絲(si),在管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的元(yuan)件的底部放有(you)較(jiao)厚的絕(jue)緣、耐火、隔熱(re)(re)(re)(re)材料,然后裝上管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的金(jin)屬(shu)(shu)外殼,安裝好(hao)管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的接線柱便可(ke)通電使用(yong)。管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)中的碳(tan)化(hua)(hua)硅常溫抗(kang)折(zhe)強度(du) 45Mpa,1000 ℃高溫抗(kang)折(zhe)強度(du) 50Mpa 管(guan)道(dao)加熱(re)(re)(re)(re)器(qi)(qi)的體積密(mi)度(du)2.7-2.75g/cm3,900℃熱(re)(re)(re)(re)膨脹率0.42-0.48% 導熱(re)(re)(re)(re)系數(shu)(350℃)10.3-16.7w/m.k 。