電伴熱和電加熱的區別，電伴熱原理是什么？
2016.11.10
電(dian)(dian)(dian)(dian)伴(ban)熱(re)(re)和(he)(he)電(dian)(dian)(dian)(dian)加熱(re)(re)的(de)(de)區別是(shi)什么(me)呢？電(dian)(dian)(dian)(dian)伴(ban)熱(re)(re)是(shi)利用絕緣電(dian)(dian)(dian)(dian)阻(zu)導(dao)電(dian)(dian)(dian)(dian)塑料或(huo)者是(shi)電(dian)(dian)(dian)(dian)阻(zu)發熱(re)(re)絲，其主(zhu)要(yao)代表(biao)有自(zi)限(xian)溫(wen)(wen)(wen)伴(ban)熱(re)(re)帶和(he)(he)恒功率伴(ban)熱(re)(re)帶，是(shi)在伴(ban)熱(re)(re)領域使用頻繁的(de)(de)兩(liang)種(zhong)產品(pin)。它們(men)的(de)(de)功率都(dou)不(bu)太(tai)大，初(chu)因其主(zhu)要(yao)的(de)(de)作用是(shi)為了(le)滿足工藝設計的(de)(de)要(yao)求(qiu)來給管道伴(ban)熱(re)(re)，慢慢地延伸到更(geng)多(duo)設備方(fang)面的(de)(de)伴(ban)熱(re)(re)。選好溫(wen)(wen)(wen)度(du)型(xing)號合適的(de)(de)自(zi)限(xian)溫(wen)(wen)(wen)產品(pin)以(yi)后，可(ke)(ke)以(yi)不(bu)需要(yao)配(pei)備溫(wen)(wen)(wen)控器，而(er)(er)恒功率是(shi)通過電(dian)(dian)(dian)(dian)阻(zu)絲來進行發熱(re)(re)，因而(er)(er)使用溫(wen)(wen)(wen)控器來限(xian)制溫(wen)(wen)(wen)度(du)，一般(ban)后者也(ye)可(ke)(ke)以(yi)被叫做高(gao)溫(wen)(wen)(wen)電(dian)(dian)(dian)(dian)伴(ban)熱(re)(re)產品(pin)，其高(gao)維持溫(wen)(wen)(wen)度(du)可(ke)(ke)達(da)到150度(du)左右，高(gao)表(biao)面耐溫(wen)(wen)(wen)為205度(du)。
電(dian)加(jia)熱(re)(re)，從字面上理解也(ye)是(shi)(shi)一種利用電(dian)能轉(zhuan)化為熱(re)(re)能的(de)(de)(de)(de)設備，其工作原理是(shi)(shi)高(gao)頻(pin)的(de)(de)(de)(de)高(gao)頻(pin)大電(dian)流流向被繞(rao)制成環狀或(huo)其它(ta)形狀的(de)(de)(de)(de)加(jia)熱(re)(re)線圈(quan)，在(zai)線圈(quan)內放入金屬等(deng)被加(jia)熱(re)(re)的(de)(de)(de)(de)物(wu)體，被磁束貫穿產生渦電(dian)流從而使得物(wu)體溫度迅速上升(sheng)。由此可見，這是(shi)(shi)一種為物(wu)體加(jia)熱(re)(re)的(de)(de)(de)(de)設備，不同于電(dian)伴熱(re)(re)的(de)(de)(de)(de)就是(shi)(shi)其功(gong)率(lv)一定(ding)很大才(cai)能瞬間將物(wu)體加(jia)熱(re)(re)到所需的(de)(de)(de)(de)要(yao)求。常用的(de)(de)(de)(de)電(dian)加(jia)熱(re)(re)，小(xiao)編很快(kuai)就想到了(le)“熱(re)(re)得快(kuai)”，一般電(dian)加(jia)熱(re)(re)器使用方式也(ye)如此，將其插入被加(jia)熱(re)(re)的(de)(de)(de)(de)物(wu)體中，在(zai)短(duan)的(de)(de)(de)(de)時間迅速加(jia)熱(re)(re)到所需的(de)(de)(de)(de)溫度。
電(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)熱(re)(re)(re)(re)(re)帶電(dian)(dian)(dian)(dian)(dian)纜(lan)由導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)高(gao)分(fen)子復(fu)合材(cai)料(塑(su)料)和兩根平行金屬導(dao)(dao)線及絕緣護套構成的(de)扁形帶狀電(dian)(dian)(dian)(dian)(dian)纜(lan)。其(qi)特(te)性(xing)是導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)高(gao)分(fen)子復(fu)合材(cai)料具有(you)(you)正溫(wen)(wen)(wen)度(du)(du)(du)系(xi)(xi)數”PTC”特(te)性(xing)，且相互并(bing)(bing)聯，能(neng)隨被加熱(re)(re)(re)(re)(re)體系(xi)(xi)的(de)溫(wen)(wen)(wen)度(du)(du)(du)變(bian)化(hua)(hua)自(zi)(zi)動(dong)調(diao)(diao)節輸出(chu)功(gong)率(lv)，自(zi)(zi)動(dong)限制(zhi)加熱(re)(re)(re)(re)(re)的(de)溫(wen)(wen)(wen)度(du)(du)(du)。“PTC”特(te)性(xing)即正溫(wen)(wen)(wen)度(du)(du)(du)系(xi)(xi)數效應(ying)，是指材(cai)料電(dian)(dian)(dian)(dian)(dian)阻率(lv)隨著溫(wen)(wen)(wen)度(du)(du)(du)升高(gao)而(er)增大(da)，并(bing)(bing)在(zai)一(yi)定溫(wen)(wen)(wen)度(du)(du)(du)區間(jian)電(dian)(dian)(dian)(dian)(dian)阻率(lv)急(ji)劇(ju)增大(da)的(de)特(te)性(xing)。溫(wen)(wen)(wen)控(kong)(kong)伴(ban)(ban)熱(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)纜(lan)可以任(ren)意(yi)截短(duan)或在(zai)一(yi)定范(fan)圍內(nei)接長(chang)使用，并(bing)(bing)允許多次交叉(cha)重疊而(er)無高(gao)溫(wen)(wen)(wen)熱(re)(re)(re)(re)(re)點及燒毀(hui)(hui)之慮。因(yin)(yin)(yin)此(ci)(ci)(ci)溫(wen)(wen)(wen)控(kong)(kong)伴(ban)(ban)熱(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)纜(lan)優(you)點是： 溫(wen)(wen)(wen)控(kong)(kong)電(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)熱(re)(re)(re)(re)(re)帶電(dian)(dian)(dian)(dian)(dian)纜(lan)相應(ying)被伴(ban)(ban)熱(re)(re)(re)(re)(re)體系(xi)(xi)具有(you)(you)自(zi)(zi)動(dong)調(diao)(diao)節輸出(chu)功(gong)率(lv)，因(yin)(yin)(yin)此(ci)(ci)(ci)不(bu)會因(yin)(yin)(yin)自(zi)(zi)身發熱(re)(re)(re)(re)(re)而(er)燒毀(hui)(hui)，卻(que)因(yin)(yin)(yin)實際需要熱(re)(re)(re)(re)(re)量進行補償，因(yin)(yin)(yin)此(ci)(ci)(ci)為新一(yi)代節能(neng)型(xing)恒(heng)溫(wen)(wen)(wen)加熱(re)(re)(re)(re)(re)器。 低溫(wen)(wen)(wen)狀態快速啟動(dong)，溫(wen)(wen)(wen)度(du)(du)(du)均勻，每(mei)一(yi)局部皆可因(yin)(yin)(yin)其(qi)被伴(ban)(ban)熱(re)(re)(re)(re)(re)處(chu)的(de)溫(wen)(wen)(wen)度(du)(du)(du)變(bian)化(hua)(hua)自(zi)(zi)動(dong)調(diao)(diao)節。 安裝(zhuang)簡便，維(wei)護簡單，自(zi)(zi)動(dong)化(hua)(hua)水(shui)平高(gao)，運行及維(wei)護費(fei)用低。 可靠，用途廣(guang)，不(bu)污染環境，壽命長(chang)。 用電(dian)(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)(re)器件加熱(re)(re)(re)(re)(re),合適的(de)溫(wen)(wen)(wen)度(du)(du)(du),就叫電(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)熱(re)(re)(re)(re)(re). 比(bi)如,冬天化(hua)(hua)工(gong)廠的(de)某項(xiang)露天管道,為了(le)保(bao)持溫(wen)(wen)(wen)度(du)(du)(du),通(tong)常會在(zai)管壁繞上(shang)電(dian)(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)(re)線,通(tong)電(dian)(dian)(dian)(dian)(dian)加熱(re)(re)(re)(re)(re),保(bao)持溫(wen)(wen)(wen)度(du)(du)(du). 在(zai)比(bi)如某些(xie)電(dian)(dian)(dian)(dian)(dian)氣(qi)控(kong)(kong)制(zhi)柜內(nei)為了(le)防止受潮或防止霧結(jie)水(shui),會安裝(zhuang)一(yi)個電(dian)(dian)(dian)(dian)(dian)加熱(re)(re)(re)(re)(re)器提高(gao)柜內(nei)溫(wen)(wen)(wen)度(du)(du)(du),這(zhe)也是電(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)熱(re)(re)(re)(re)(re). 通(tong)常電(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)熱(re)(re)(re)(re)(re)都(dou)是有(you)(you)溫(wen)(wen)(wen)度(du)(du)(du)控(kong)(kong)制(zhi)單元的(de),以保(bao)持溫(wen)(wen)(wen)度(du)(du)(du)在(zai)設定的(de)范(fan)圍內(nei)。
