時(shi)間:2020-4-9 10:23:10

板(ban)式換熱器是由一(yi)(yi)系列具有(you)一(yi)(yi)定波紋(wen)形狀的(de)金屬片(pian)(pian)疊裝而成(cheng)的(de)一(yi)(yi)種(zhong)新型高效換熱器。各(ge)種(zhong)板(ban)片(pian)(pian)之間形成(cheng)薄矩形通道,通過板(ban)片(pian)(pian)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。
板式換熱器的型式主要有框架(jia)式(可拆卸式)和式兩大類,板片(pian)形(xing)式主要有人字形(xing)波紋(wen)板、水平平直波紋(wen)板和(he)瘤形(xing)板片(pian)三種。
可拆卸式(shi)板(ban)(ban)(ban)(ban)式(shi)換(huan)熱器是(shi)由許多換(huan)熱板(ban)(ban)(ban)(ban)片(pian)(pian),按(an)一定間(jian)隔四周通過密(mi)封墊(dian)(dian)片(pian)(pian)密(mi)封,并用(yong)夾緊螺柱壓(ya)緊而成(cheng),其角(jiao)上(shang)的(de)(de)孔構成(cheng)了連(lian)續的(de)(de)通道(dao),介質從入口進入通道(dao),并被(bei)(bei)分配到(dao)換(huan)熱板(ban)(ban)(ban)(ban)片(pian)(pian)之間(jian)的(de)(de)流(liu)(liu)道(dao)內,每張板(ban)(ban)(ban)(ban)片(pian)(pian)都有密(mi)封墊(dian)(dian)片(pian)(pian),板(ban)(ban)(ban)(ban)與板(ban)(ban)(ban)(ban)之間(jian)的(de)(de)位置是(shi)交替放置,兩種流(liu)(liu)體(ti),分別進入各自通道(dao),由板(ban)(ban)(ban)(ban)片(pian)(pian)隔開,一般情況(kuang)下,兩種介質在通道(dao)內逆流(liu)(liu)流(liu)(liu)動,熱介質將熱能(neng)傳遞給(gei)板(ban)(ban)(ban)(ban)片(pian)(pian),板(ban)(ban)(ban)(ban)片(pian)(pian)又將熱能(neng)傳遞給(gei)另一側(ce)的(de)(de)冷介質,從而達到(dao)熱介質溫度降低(di)被(bei)(bei)冷卻,冷介質溫度升高得到(dao)加熱的(de)(de)目(mu)的(de)(de)。
1、傳(chuan)熱效率高,是管殼式的3-5倍;
2、結構緊湊,占地(di)面積(ji)小,節省投資,重量(liang)輕,易維護(hu);
3、拆洗(xi)方便,容易清(qing)洗(xi);
4、熱量損失小(xiao),阻(zu)力損失少;
5、使(shi)用壽命長,可耐各種腐蝕介質,膠墊可隨意更換。
