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- 如何提高空氣加熱器的加熱效率
- 發布日期:2019年12月11 點擊次數:85 所屬分類:行業動態
空(kong)(kong)(kong)氣加(jia)(jia)(jia)(jia)熱(re)(re)器專業電加(jia)(jia)(jia)(jia)熱(re)(re)器生產廠家介紹空(kong)(kong)(kong)氣加(jia)(jia)(jia)(jia)熱(re)(re)器是壓力容器,同(tong)時要(yao)抵制高(gao)(gao)溫(wen)空(kong)(kong)(kong)氣的(de)(de)氧化作用(yong),所以(yi)材料(liao)必(bi)須(xu)選用(yong)不(bu)(bu)銹鋼。空(kong)(kong)(kong)氣加(jia)(jia)(jia)(jia)熱(re)(re)器的(de)(de)發(fa)熱(re)(re)元件選擇為不(bu)(bu)銹鋼電加(jia)(jia)(jia)(jia)熱(re)(re)管。加(jia)(jia)(jia)(jia)熱(re)(re)器內(nei)腔(qiang)設置多個折流板,可(ke)(ke)延長空(kong)(kong)(kong)氣在加(jia)(jia)(jia)(jia)熱(re)(re)器內(nei)腔(qiang)留時間,以(yi)提高(gao)(gao)熱(re)(re)交換效率(lv)。適當的(de)(de)增加(jia)(jia)(jia)(jia)加(jia)(jia)(jia)(jia)熱(re)(re)管數(shu)量,不(bu)(bu)但可(ke)(ke)以(yi)提高(gao)(gao)空(kong)(kong)(kong)氣加(jia)(jia)(jia)(jia)熱(re)(re)器的(de)(de)裝機功率(lv),還可(ke)(ke)以(yi)縮短(duan)生產線(xian)開機升(sheng)(sheng)溫(wen)的(de)(de)時間。空(kong)(kong)(kong)氣加(jia)(jia)(jia)(jia)熱(re)(re)器的(de)(de)使用(yong)范圍(wei)也很寬,可(ke)(ke)以(yi)對任(ren)何(he)的(de)(de)氣體加(jia)(jia)(jia)(jia)熱(re)(re),所產生的(de)(de)熱(re)(re)空(kong)(kong)(kong)氣干燥無水分不(bu)(bu)導電,不(bu)(bu)燃燒,不(bu)(bu)爆炸(zha),也沒有(you)化學腐蝕性(xing),無污(wu)染,安全可(ke)(ke)靠,被(bei)加(jia)(jia)(jia)(jia)熱(re)(re)的(de)(de)空(kong)(kong)(kong)間升(sheng)(sheng)溫(wen)快。
空(kong)(kong)氣加(jia)(jia)(jia)熱(re)(re)器(qi)的(de)氣體入(ru)口流速(su),能夠(gou)加(jia)(jia)(jia)強(qiang)空(kong)(kong)氣加(jia)(jia)(jia)熱(re)(re)器(qi)對流換(huan)熱(re)(re),有(you)效的(de)降低了(le)空(kong)(kong)氣加(jia)(jia)(jia)熱(re)(re)器(qi)內電熱(re)(re)元件表面(mian)的(de)溫(wen)度,不但能延長空(kong)(kong)氣加(jia)(jia)(jia)熱(re)(re)器(qi)電熱(re)(re)元件的(de)使(shi)用壽命,還可以使(shi)空(kong)(kong)氣電加(jia)(jia)(jia)熱(re)(re)器(qi)散熱(re)(re)損失減(jian)小,促使(shi)空(kong)(kong)氣換(huan)熱(re)(re)器(qi)的(de)效率(lv)提高(gao)了(le);如(ru)果速(su)度過大(da),使(shi)得壓力損失陡增,不會使(shi)加(jia)(jia)(jia)熱(re)(re)效率(lv)的(de)提高(gao)。
若其它條件不變(bian)(bian),改變(bian)(bian)表(biao)面(mian)(mian)負荷(he)(he),空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)中(zhong)(zhong)電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件的(de)(de)壁溫(wen)(wen)(wen)(wen)(wen)出(chu)現變(bian)(bian)化,如果(guo)表(biao)面(mian)(mian)負荷(he)(he)增大,電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件的(de)(de)壁溫(wen)(wen)(wen)(wen)(wen)也會隨之(zhi)增大,故此(ci)會降(jiang)低(di)(di)空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)中(zhong)(zhong)電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件的(de)(de)使用壽命;但是如果(guo)表(biao)面(mian)(mian)負荷(he)(he)過小,壁溫(wen)(wen)(wen)(wen)(wen)過低(di)(di),空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)換(huan)熱(re)器(qi)的(de)(de)效(xiao)率又降(jiang)低(di)(di)了,所以空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)中(zhong)(zhong)電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件的(de)(de)選擇比較重(zhong)要空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)中(zhong)(zhong)空(kong)氣(qi)(qi)(qi)終溫(wen)(wen)(wen)(wen)(wen)提高時,由于空(kong)氣(qi)(qi)(qi)粘(zhan)性(xing)持(chi)續增加(jia),氣(qi)(qi)(qi)體雷諾(nuo)數漸(jian)漸(jian)減小,使得(de)對流換(huan)熱(re)強度慢慢下(xia)降(jiang),空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)中(zhong)(zhong)電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件的(de)(de)表(biao)面(mian)(mian)溫(wen)(wen)(wen)(wen)(wen)度隨之(zhi)上升(sheng),紅外碳硫分析(xi)儀使得(de)散熱(re)損失上,從而降(jiang)低(di)(di)換(huan)熱(re)器(qi)的(de)(de)工(gong)作(zuo)效(xiao)率。當(dang)提高過大時,電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件表(biao)面(mian)(mian)的(de)(de)溫(wen)(wen)(wen)(wen)(wen)度也會急劇升(sheng)高,致使一般電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件難以承受(shou),故T2的(de)(de)增加(jia)通常受(shou)到(dao)空(kong)氣(qi)(qi)(qi)加(jia)熱(re)器(qi)中(zhong)(zhong)電(dian)(dian)(dian)熱(re)元(yuan)(yuan)件材料耐熱(re)性(xing)能的(de)(de)限制。
- 相關標簽:行業動態
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