電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)就(jiu)(jiu)是(shi)利(li)用電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)設(she)(she)備將(jiang)電(dian)能(neng)(neng)轉化(hua)為熱(re)(re)(re)(re)(re)(re)(re)(re)能(neng)(neng)，通(tong)(tong)過(guo)直接(jie)或(huo)間(jian)接(jie)的(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)交換，補充被伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)設(she)(she)備通(tong)(tong)過(guo)保(bao)(bao)溫(wen)材料所損(sun)失的(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)量，并(bing)采用溫(wen)度控(kong)(kong)制，達(da)到(dao)跟蹤和控(kong)(kong)制伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)設(she)(she)備內介(jie)質的(de)(de)溫(wen)度，使(shi)之維持在一個合(he)理和經濟的(de)(de)水平上。 過(guo)去(qu)，蒸(zheng)(zheng)汽伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)始終(zhong)是(shi)一種(zhong)主要的(de)(de)保(bao)(bao)溫(wen)方(fang)式。其工(gong)作原理是(shi)通(tong)(tong)過(guo)蒸(zheng)(zheng)汽伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)管道(dao)散熱(re)(re)(re)(re)(re)(re)(re)(re)以(yi)補充被保(bao)(bao)溫(wen)管道(dao)的(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)損(sun)失。由(you)于(yu)蒸(zheng)(zheng)汽的(de)(de)散熱(re)(re)(re)(re)(re)(re)(re)(re)量不易控(kong)(kong)制，其保(bao)(bao)溫(wen)效率始終(zhong)處于(yu)一個較低的(de)(de)水平。20世紀70年(nian)代，美(mei)國能(neng)(neng)源行業(ye)就(jiu)(jiu)提出(chu)用電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)方(fang)案來替(ti)代蒸(zheng)(zheng)汽伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)的(de)(de)設(she)(she)想。70年(nian)代末80年(nian)代初，包括能(neng)(neng)源業(ye)在內的(de)(de)很多工(gong)業(ye)部門已廣泛(fan)推廣了電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)技術(shu)，以(yi)電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)全面(mian)代替(ti)蒸(zheng)(zheng)汽伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)。電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)技術(shu)發(fa)展至今，已由(you)傳統(tong)的(de)(de)恒(heng)功率伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)發(fa)展到(dao)以(yi)導(dao)電(dian)塑料為核心(xin)的(de)(de)自(zi)控(kong)(kong)溫(wen)電(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)

伴熱帶工作原理

自控溫電伴熱帶

（也稱溫(wen)控電伴熱帶電纜(lan)）的(de)工作原理

溫(wen)(wen)控電(dian)(dian)伴(ban)熱(re)(re)(re)帶電(dian)(dian)纜(lan)由導(dao)(dao)電(dian)(dian)高(gao)分子復合材料(liao)(塑料(liao))和兩根平行金屬導(dao)(dao)線(xian)及絕緣護套構成的扁形(xing)帶狀(zhuang)電(dian)(dian)纜(lan)。其(qi)特(te)性(xing)(xing)是(shi)導(dao)(dao)電(dian)(dian)高(gao)分子復合材料(liao)具有正(zheng)溫(wen)(wen)度系(xi)數(shu)“PTC”特(te)性(xing)(xing)，且相互并(bing)(bing)聯，能(neng)隨被加(jia)熱(re)(re)(re)體系(xi)的溫(wen)(wen)度變化(hua)自動(dong)調節輸(shu)出功率，自動(dong)限(xian)制(zhi)加(jia)熱(re)(re)(re)的溫(wen)(wen)度。“PTC”特(te)性(xing)(xing)即(ji)正(zheng)溫(wen)(wen)度系(xi)數(shu)效應(ying)，是(shi)指材料(liao)電(dian)(dian)阻率隨著溫(wen)(wen)度升高(gao)而增(zeng)大，并(bing)(bing)在一(yi)定溫(wen)(wen)度區間電(dian)(dian)阻率急劇(ju)增(zeng)大的特(te)性(xing)(xing)。溫(wen)(wen)控伴(ban)熱(re)(re)(re)電(dian)(dian)纜(lan)可以任(ren)意截短或在一(yi)定范圍內(nei)接長使用(yong)，并(bing)(bing)允許多(duo)次交叉重疊而無高(gao)溫(wen)(wen)熱(re)(re)(re)點(dian)及燒毀之慮。因此溫(wen)(wen)控伴(ban)熱(re)(re)(re)電(dian)(dian)纜(lan)優(you)點(dian)是(shi)：

溫控電伴熱(re)帶電纜(lan)相應(ying)被(bei)伴熱(re)體系具有自動調節輸出功率，因此不會因自身(shen)發(fa)熱(re)而燒毀(hui)，卻因實際需要熱(re)量(liang)進行補償，因此為新一代節能型恒溫加熱(re)器。

低溫狀態快速啟動，溫度(du)均(jun)勻，每(mei)一局部(bu)皆可因其被伴熱處的溫度(du)變化(hua)自動調節。

安裝(zhuang)簡便，維護(hu)(hu)簡單，自動化水平高(gao)，運行及維護(hu)(hu)費用低。

安(an)全可(ke)靠，用途廣，不污(wu)染環境，壽命長(chang)。