時間:2020-4-9 10:23:10
板(ban)式換熱(re)器是由(you)一(yi)系(xi)列具有一(yi)定(ding)波紋形(xing)(xing)狀的金(jin)屬片疊裝而成(cheng)的一(yi)種新型高效(xiao)換熱(re)器。各種板(ban)片之間形(xing)(xing)成(cheng)薄矩形(xing)(xing)通道,通過板(ban)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。
板式(shi)換熱(re)器的型式(shi)主(zhu)要有框架式(shi)(可拆卸式(shi))和式兩大類,板(ban)片(pian)形(xing)式主要有人(ren)字形(xing)波紋(wen)板(ban)、水平(ping)平(ping)直波紋(wen)板(ban)和瘤形(xing)板(ban)片(pian)三種。
可拆卸式(shi)板(ban)(ban)(ban)(ban)式(shi)換熱(re)(re)(re)器是由(you)許多換熱(re)(re)(re)板(ban)(ban)(ban)(ban)片,按一(yi)定(ding)間隔四周通(tong)過密封墊片密封,并用(yong)夾緊(jin)螺(luo)柱(zhu)壓緊(jin)而成(cheng),其角上的(de)(de)孔構成(cheng)了連續的(de)(de)通(tong)道(dao),介質(zhi)從入口進(jin)入通(tong)道(dao),并被(bei)分配到換熱(re)(re)(re)板(ban)(ban)(ban)(ban)片之間的(de)(de)流道(dao)內(nei),每張板(ban)(ban)(ban)(ban)片都有密封墊片,板(ban)(ban)(ban)(ban)與板(ban)(ban)(ban)(ban)之間的(de)(de)位置(zhi)(zhi)是交替(ti)放置(zhi)(zhi),兩(liang)種流體,分別(bie)進(jin)入各自通(tong)道(dao),由(you)板(ban)(ban)(ban)(ban)片隔開(kai),一(yi)般情況下,兩(liang)種介質(zhi)在通(tong)道(dao)內(nei)逆流流動,熱(re)(re)(re)介質(zhi)將(jiang)熱(re)(re)(re)能傳遞(di)給(gei)板(ban)(ban)(ban)(ban)片,板(ban)(ban)(ban)(ban)片又(you)將(jiang)熱(re)(re)(re)能傳遞(di)給(gei)另一(yi)側的(de)(de)冷(leng)(leng)介質(zhi),從而達到熱(re)(re)(re)介質(zhi)溫(wen)(wen)度降(jiang)低被(bei)冷(leng)(leng)卻,冷(leng)(leng)介質(zhi)溫(wen)(wen)度升高得到加熱(re)(re)(re)的(de)(de)目的(de)(de)。
1、傳熱效率(lv)高,是管殼式(shi)的3-5倍;
2、結構緊湊,占地面積小,節省投資(zi),重(zhong)量輕,易維護;
3、拆洗方便,容易清洗;
4、熱量損失小,阻(zu)力損失少;
5、使用(yong)壽命長,可耐各種腐蝕介質,膠墊可隨意更換(huan)。