間接電(dian)阻加熱(re)(re)(re)的發(fa)熱(re)(re)(re)元件(jian)(jian)所用(yong)(yong)材(cai)料(liao)(liao)(liao)，一般要求電(dian)阻率大、電(dian)阻溫(wen)(wen)度(du)(du)系(xi)數小(xiao)，在高溫(wen)(wen)下變(bian)形小(xiao)且不易脆化(hua)(hua)(hua)。常用(yong)(yong)的有鐵鋁合(he)金(jin)、鎳鉻合(he)金(jin)等金(jin)屬材(cai)料(liao)(liao)(liao)和(he)碳化(hua)(hua)(hua)硅(gui)、二硅(gui)化(hua)(hua)(hua)鉬等非金(jin)屬材(cai)料(liao)(liao)(liao)。金(jin)屬發(fa)熱(re)(re)(re)元件(jian)(jian)的工(gong)作溫(wen)(wen)度(du)(du)，遼寧輻(fu)射板電(dian)熱(re)(re)(re)管，根據材(cai)料(liao)(liao)(liao)種(zhong)類可(ke)(ke)達1000～1500℃；非金(jin)屬發(fa)熱(re)(re)(re)元件(jian)(jian)的工(gong)作溫(wen)(wen)度(du)(du)可(ke)(ke)達1500～1700℃。后者安裝方便，可(ke)(ke)熱(re)(re)(re)爐更換，但(dan)它工(gong)作時需要調壓裝置，壽命比合(he)金(jin)發(fa)熱(re)(re)(re)元件(jian)(jian)短，輻(fu)射板電(dian)熱(re)(re)(re)管采(cai)購，一般用(yong)(yong)于高溫(wen)(wen)爐、溫(wen)(wen)度(du)(du)超過金(jin)屬材(cai)料(liao)(liao)(liao)發(fa)熱(re)(re)(re)元件(jian)(jian)允許工(gong)作溫(wen)(wen)度(du)(du)的地方和(he)某些特殊場合(he)。

：差(cha)異性溫(wen)度；通(tong)過電能可將空(kong)氣的溫(wen)度通(tong)過電通(tong)加(jia)熱(re)到(dao)450℃，但(dan)是外部殼(ke)體的溫(wen)度控制在50℃左右(you)。減少操作人員的工作環境溫(wen)度。

第二(er)：使(shi)用效率非常高：使(shi)用率能達90%以上(shang)。

第三：溫(wen)(wen)控性較高(gao)：無論是(shi)升溫(wen)(wen)階段還是(shi)降(jiang)溫(wen)(wen)的(de)過(guo)程，輻(fu)射板電熱管廠，都非(fei)常快，快能達到(dao)1攝氏度每秒的(de)狀態，調溫(wen)(wen)快而(er)穩，輻(fu)射板電熱管報價，不會(hui)出現所控空氣溫(wen)(wen)度超前和滯(zhi)后現象而(er)使經過(guo)加熱的(de)空氣溫(wen)(wen)度的(de)溫(wen)(wen)差達不到(dao)要求。

空(kong)氣電(dian)加(jia)熱(re)(re)(re)器(qi)用(yong)(yong)(yong)于對流動(dong)的液態、氣態介質的升(sheng)溫、保溫、加(jia)熱(re)(re)(re)。當空(kong)氣電(dian)加(jia)熱(re)(re)(re)器(qi)中的加(jia)熱(re)(re)(re)介質在壓力作用(yong)(yong)(yong)下(xia)(xia)通過電(dian)加(jia)熱(re)(re)(re)器(qi)加(jia)熱(re)(re)(re)腔(qiang)，采用(yong)(yong)(yong)流體熱(re)(re)(re)力學原理均(jun)勻地帶走空(kong)氣電(dian)加(jia)熱(re)(re)(re)器(qi)中的電(dian)熱(re)(re)(re)元(yuan)件(jian)工(gong)(gong)作中所產生(sheng)的巨大熱(re)(re)(re)量，使空(kong)氣電(dian)加(jia)熱(re)(re)(re)器(qi)被加(jia)熱(re)(re)(re)介質溫度達到用(yong)(yong)(yong)戶工(gong)(gong)藝(yi)要求。就其應(ying)用(yong)(yong)(yong)范圍來(lai)說，電(dian)加(jia)熱(re)(re)(re)器(qi)典(dian)型應(ying)用(yong)(yong)(yong)場合：化工(gong)(gong)行業的化工(gong)(gong)物料升(sheng)溫加(jia)熱(re)(re)(re)、一定壓力下(xia)(xia)一些粉末干燥(zao)(zao)、化工(gong)(gong)過程及(ji)噴燥(zao)(zao)。