自(zi)限電(dian)(dian)熱(re)帶(dai)是目前電(dian)(dian)伴熱(re)行業(ye)中***經濟環(huan)(huan)保的(de)電(dian)(dian)伴熱(re)帶(dai)，經濟是因為它無(wu)論(lun)價格，安裝(zhuang)維(wei)護(hu)成(cheng)本，用(yong)電(dian)(dian)量(liang)均比恒功率(lv)電(dian)(dian)熱(re)帶(dai)同(tong)性(xing)質產(chan)(chan)(chan)品與(yu)其他(ta)伴熱(re)產(chan)(chan)(chan)品都(dou)更(geng)實惠(hui)，它較大的(de)優點(dian)在于(yu)不(bu)需(xu)要(yao)溫(wen)控裝(zhuang)置，環(huan)(huan)保在于(yu)它區別與(yu)恒功率(lv)電(dian)(dian)熱(re)帶(dai)所采用(yong)的(de)氟材(cai)料不(bu)同(tong)均為環(huan)(huan)保料，無(wu)任何污染環(huan)(huan)境成(cheng)分，在供(gong)熱(re)的(de)時(shi)候不(bu)會產(chan)(chan)(chan)生異味，更(geng)加適合一般(ban)家庭(ting)用(yong)戶使用(yong)。雖然(ran)，自(zi)限溫(wen)電(dian)(dian)熱(re)帶(dai)是節(jie)能環(huan)(huan)保型的(de)電(dian)(dian)熱(re)帶(dai)，但(dan)很多(duo)客(ke)戶因為對此(ci)類(lei)型的(de)產(chan)(chan)(chan)品并不(bu)了解。
自限(xian)溫電(dian)熱帶的工作原理：
其特性(xing)是導電(dian)(dian)高分子復合(he)材(cai)料(liao)具(ju)有(you)正溫(wen)(wen)(wen)度系數(shu)PTC特性(xing)，能隨(sui)被(bei)加(jia)(jia)熱(re)(re)體系的(de)(de)溫(wen)(wen)(wen)度變化(hua)自(zi)(zi)動調節輸出功(gong)率，自(zi)(zi)動限制加(jia)(jia)熱(re)(re)溫(wen)(wen)(wen)度。PTC特性(xing)即正溫(wen)(wen)(wen)度系數(shu)效應(ying)，是指材(cai)料(liao)電(dian)(dian)阻(zu)率隨(sui)著溫(wen)(wen)(wen)度的(de)(de)升(sheng)高而增大，并在一定(ding)的(de)(de)溫(wen)(wen)(wen)度區間內電(dian)(dian)阻(zu)急(ji)劇增大的(de)(de)特性(xing)。當(dang)環境(jing)溫(wen)(wen)(wen)度升(sheng)高時，其阻(zu)值也隨(sui)之上升(sheng)，產(chan)生的(de)(de)熱(re)(re)量降低(di)，當(dang)環境(jing)溫(wen)(wen)(wen)度升(sheng)高到一定(ding)值時，半導電(dian)(dian)塑料(liao)內電(dian)(dian)流(liu)降到***小值，伴(ban)熱(re)(re)帶(dai)產(chan)生的(de)(de)熱(re)(re)量接近于(yu)零。
自限溫(wen)(wen)(wen)電(dian)(dian)(dian)熱(re)帶根(gen)據溫(wen)(wen)(wen)度(du)65度(du)，105度(du)為上限分為低(di)溫(wen)(wen)(wen)，中溫(wen)(wen)(wen)型電(dian)(dian)(dian)熱(re)帶。所以(yi)(yi)伴熱(re)溫(wen)(wen)(wen)度(du)不(bu)(bu)會(hui)出現過高的(de)(de)情況，因考(kao)慮實(shi)際存在(zai)三分之一的(de)(de)熱(re)損(sun)耗，即使(shi)是(shi)在(zai)無溫(wen)(wen)(wen)控器控制的(de)(de)情況下(xia)，維持溫(wen)(wen)(wen)度(du)不(bu)(bu)會(hui)過高，而再達到熱(re)平(ping)衡時候，電(dian)(dian)(dian)熱(re)帶的(de)(de)芯帶電(dian)(dian)(dian)阻會(hui)增大，電(dian)(dian)(dian)流會(hui)變小(xiao)。長期通(tong)(tong)電(dian)(dian)(dian)情況下(xia)使(shi)溫(wen)(wen)(wen)度(du)維持平(ping)衡，所以(yi)(yi)功率會(hui)變得比較小(xiao)，所以(yi)(yi)自限溫(wen)(wen)(wen)電(dian)(dian)(dian)熱(re)帶即使(shi)長期通(tong)(tong)電(dian)(dian)(dian)也能(neng)省電(dian)(dian)(dian)的(de)(de)經濟環(huan)保型電(dian)(dian)(dian)熱(re)帶。
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