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　　3種伴熱(re)方式(shi)的(de)比較(jiao)

目前(qian)，管(guan)道(dao)的(de)(de)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)方(fang)式有電(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)、蒸(zheng)汽伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)、熱(re)(re)(re)(re)(re)水(shui)夾套(tao)管(guan)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)3種。蒸(zheng)汽伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)和熱(re)(re)(re)(re)(re)水(shui)夾套(tao)管(guan)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)因(yin)受(shou)熱(re)(re)(re)(re)(re)源的(de)(de)影(ying)響和制約(yue)較大，不適用(yong)(yong)(yong)(yong)于(yu)(yu)小(xiao)區庭(ting)院(yuan)燃(ran)氣(qi)管(guan)道(dao)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)。而電(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)熱(re)(re)(re)(re)(re)源方(fang)便靈活，熱(re)(re)(re)(re)(re)效率可(ke)達80%～90%，是熱(re)(re)(re)(re)(re)效率的(de)(de)一種熱(re)(re)(re)(re)(re)保護方(fang)式，具有運(yun)行可(ke)靠(kao)、不需經(jing)常維修等(deng)優點(dian)，適用(yong)(yong)(yong)(yong)于(yu)(yu)小(xiao)區庭(ting)院(yuan)燃(ran)氣(qi)管(guan)道(dao)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)。電(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)是指用(yong)(yong)(yong)(yong)電(dian)(dian)能補充(chong)被伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)物體(ti)在使用(yong)(yong)(yong)(yong)過(guo)程中的(de)(de)熱(re)(re)(re)(re)(re)損失，使其溫(wen)度(du)維持(chi)在一定的(de)(de)范圍內(nei)。在石(shi)油行業中，電(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)不用(yong)(yong)(yong)(yong)于(yu)(yu)提高介質的(de)(de)溫(wen)度(du)，主要用(yong)(yong)(yong)(yong)于(yu)(yu)防(fang)凍、防(fang)凝和工藝保溫(wen).目前(qian)已經(jing)有很多企業生產了防(fang)爆的(de)(de)電(dian)(dian)熱(re)(re)(re)(re)(re)帶，這為燃(ran)氣(qi)管(guan)道(dao)采用(yong)(yong)(yong)(yong)電(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)提供了有利條件

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視頻作者：天津旭誠電伴熱帶科技有限公司

電伴熱帶多少(shao)錢一米？

在購買產品或者其(qi)它(ta)物(wu)品的過程中，價格一(yi)(yi)直(zhi)是(shi)(shi)客戶比較關心的，電伴熱帶同樣(yang)也是(shi)(shi)，用戶購買前也會(hui)詢問電伴熱帶多少錢一(yi)(yi)米(mi)，這樣(yang)才知(zhi)道整個工程的預算是(shi)(shi)多少，也好進行匯報，那么(me)下面小編就電伴熱帶多少錢一(yi)(yi)米(mi)給大(da)家進行一(yi)(yi)一(yi)(yi)解答。

現在網絡(luo)購物非常方便了，所以很(hen)多(duo)用戶喜(xi)歡在網上搜索，看到合適的就直(zhi)接在線上下(xia)單(dan)購買(mai)了，但是用戶往(wang)往(wang)發現同一(yi)樣一(yi)款電(dian)伴熱(re)帶不同廠(chang)家價格差異比較大(da)，可能有幾元、十幾元、幾十元不等。

電(dian)(dian)伴熱(re)(re)(re)(re)(re)的(de)(de)所有的(de)(de)自控(kong)(kong)(kong)及電(dian)(dian)源部分，都需(xu)要(yao)(yao)接上過(guo)流(liu)保(bao)護及漏電(dian)(dian)保(bao)護，作(zuo)為(wei)(wei)必要(yao)(yao)的(de)(de)電(dian)(dian)氣(qi)保(bao)護，與(yu)(yu)熱(re)(re)(re)(re)(re)線(xian)相的(de)(de)電(dian)(dian)氣(qi)設(she)備也(ye)需(xu)要(yao)(yao)完全符合(he)相關(guan)(guan)(guan)(guan)標準規(gui)范。1．單一(yi)電(dian)(dian)源熱(re)(re)(re)(re)(re)線(xian)長(chang)度(du)(du)例如(ru):120m長(chang)熱(re)(re)(re)(re)(re)線(xian)，如(ru)何選(xuan)過(guo)流(liu)保(bao)護開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)步(bu)：  決定Ts（熱(re)(re)(re)(re)(re)線(xian)起動時，管(guan)道(dao)可能處于的(de)(de)溫(wen)度(du)(du)）Ts=0℃第二步(bu)：  根(gen)據(ju)Ts確(que)定過(guo)流(liu)保(bao)護開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)容(rong)(rong)量，查表(biao)第三步(bu)：根(gen)據(ju)表(biao)，發現(xian)Lmax=67m需(xu)5A開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)，Lmax=136m需(xu)10A開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)。 現(xian)熱(re)(re)(re)(re)(re)線(xian)長(chang)度(du)(du)為(wei)(wei)L=120m,選(xuan)10A開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)足夠。L1+ L2 +L3≤熱(re)(re)(re)(re)(re)線(xian)長(chang)度(du)(du)Lmax   單一(yi)電(dian)(dian)源熱(re)(re)(re)(re)(re)線(xian)長(chang)度(du)(du)與(yu)(yu)過(guo)流(liu)保(bao)護開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)的(de)(de)容(rong)(rong)量關(guan)(guan)(guan)(guan)系可查表(biao)2． 電(dian)(dian)路對地漏電(dian)(dian)保(bao)護  根(gen)據(ju)IEEE（515-1989）建議，每(mei)一(yi)電(dian)(dian)伴熱(re)(re)(re)(re)(re)線(xian)路應相配(pei)(pei)采用(yong)(yong)(yong)(yong)30mA對地漏電(dian)(dian)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)（ELCB-Earth Leak Circuit Breaker）做電(dian)(dian)工(gong)保(bao)護，特別(bie)是在(zai)防爆區、危(wei)險區或腐蝕(shi)區，當管(guan)道(dao)需(xu)要(yao)(yao)經常維修和伴熱(re)(re)(re)(re)(re)線(xian)容(rong)(rong)易受到機(ji)械損壞的(de)(de)區域(yu)。3． 起動與(yu)(yu)過(guo)流(liu)保(bao)護  電(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)低溫(wen)起動具有較(jiao)大(da)(da)啟動電(dian)(dian)流(liu)特性。安裝使用(yong)(yong)(yong)(yong)長(chang)度(du)(du)較(jiao)大(da)(da)的(de)(de)電(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)應配(pei)(pei)用(yong)(yong)(yong)(yong)雙閘(zha)(zha)切換(huan)裝置(zhi)，即兩穩態工(gong)作(zuo)開(kai)(kai)(kai)(kai)(kai)關(guan)(guan)(guan)(guan)閘(zha)(zha)同時接通電(dian)(dian)源;1分鐘后(hou)或待電(dian)(dian)熱(re)(re)(re)(re)(re)帶(dai)(dai)正常工(gong)作(zuo)后(hou)進(jin)行切換(huan)至(zhi)保(bao)險裝置(zhi)。  4． 電(dian)(dian)路原理  電(dian)(dian)源控(kong)(kong)(kong)制(zhi)箱(xiang)的(de)(de)選(xuan)擇應根(gen)據(ju)應用(yong)(yong)(yong)(yong)場(chang)合(he)要(yao)(yao)求，線(xian)路用(yong)(yong)(yong)(yong)量多少進(jin)行選(xuan)擇，常見有單相數(shu)路控(kong)(kong)(kong)制(zhi)箱(xiang)三相數(shu)路控(kong)(kong)(kong)制(zhi)，在(zai)溫(wen)度(du)(du)控(kong)(kong)(kong)制(zhi)精度(du)(du)為(wei)(wei)±5℃以(yi)內時用(yong)(yong)(yong)(yong)，否則一(yi)律不采用(yong)(yong)(yong)(yong)。