時間:2020-4-9 10:23:10

板式(shi)換熱器(qi)是(shi)由一系(xi)列具有一定波紋形(xing)(xing)狀(zhuang)的金屬(shu)片疊裝而(er)成的一種新型高效換熱器(qi)。各種板片之(zhi)間形(xing)(xing)成薄矩形(xing)(xing)通(tong)道,通(tong)過板片進行交換。板式換熱器是液—液、液—汽進行熱交換的理想設備。它具有換熱效率高、熱損失小、結構緊湊輕巧、占地面積小、安裝清洗方便、應用廣泛、使用壽命長等特點。在壓力損失情況下,其傳熱系數比列管式換熱器高3-5倍,占地面積為的三分之一,熱回收率可高達90%以上。
板(ban)式換熱器的型式主要有(you)框架(jia)式(可拆卸式)和式兩大類,板(ban)(ban)片形式主(zhu)要(yao)有人字(zi)形波(bo)紋(wen)板(ban)(ban)、水平(ping)平(ping)直波(bo)紋(wen)板(ban)(ban)和瘤形板(ban)(ban)片三種。
可拆卸(xie)式板(ban)(ban)(ban)式換(huan)(huan)熱(re)(re)器是(shi)由(you)許多換(huan)(huan)熱(re)(re)板(ban)(ban)(ban)片(pian)(pian)(pian),按一定間(jian)隔四周通過密封(feng)墊片(pian)(pian)(pian)密封(feng),并(bing)用夾緊(jin)螺柱壓緊(jin)而(er)成,其角上的(de)孔構成了連續的(de)通道,介(jie)質(zhi)(zhi)從(cong)入口進(jin)入通道,并(bing)被(bei)分(fen)配(pei)到換(huan)(huan)熱(re)(re)板(ban)(ban)(ban)片(pian)(pian)(pian)之間(jian)的(de)流道內,每張板(ban)(ban)(ban)片(pian)(pian)(pian)都有(you)密封(feng)墊片(pian)(pian)(pian),板(ban)(ban)(ban)與板(ban)(ban)(ban)之間(jian)的(de)位置(zhi)(zhi)是(shi)交替放(fang)置(zhi)(zhi),兩種(zhong)流體(ti),分(fen)別進(jin)入各自通道,由(you)板(ban)(ban)(ban)片(pian)(pian)(pian)隔開,一般情況下(xia),兩種(zhong)介(jie)質(zhi)(zhi)在通道內逆流流動,熱(re)(re)介(jie)質(zhi)(zhi)將熱(re)(re)能傳遞(di)給板(ban)(ban)(ban)片(pian)(pian)(pian),板(ban)(ban)(ban)片(pian)(pian)(pian)又(you)將熱(re)(re)能傳遞(di)給另一側的(de)冷(leng)介(jie)質(zhi)(zhi),從(cong)而(er)達到熱(re)(re)介(jie)質(zhi)(zhi)溫(wen)(wen)度降低被(bei)冷(leng)卻,冷(leng)介(jie)質(zhi)(zhi)溫(wen)(wen)度升高得(de)到加熱(re)(re)的(de)目的(de)。
1、傳熱(re)效(xiao)率(lv)高,是管殼式的3-5倍(bei);
2、結構緊湊(cou),占地面積小(xiao),節(jie)省投資,重(zhong)量(liang)輕,易維護;
3、拆(chai)洗方(fang)便,容易清洗;
4、熱量損(sun)失(shi)小,阻力損(sun)失(shi)少;
5、使用壽命(ming)長,可(ke)耐各種(zhong)腐蝕(shi)介質,膠(jiao)墊可(ke)隨意更換。
