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  • 冷卻塔改造廠家聯(lián)系方式
  • 冷卻塔維修
  • 冷卻塔改造方案的主要內(nèi)容有哪些
當(dāng)前位置:特菱首頁 > 冷卻塔百科 > 常見問題 > 開式冷卻塔冷卻的設(shè)計原理介紹(開式冷卻塔冷卻水泵揚(yáng)程計算)

開式冷卻塔冷卻的設(shè)計原理介紹(開式冷卻塔冷卻水泵揚(yáng)程計算)

日期:2024-01-28 發(fā)布者:冷卻塔配件廠家 閱讀量:

開式冷卻塔冷卻的設(shè)計原理介紹(開式冷卻塔冷卻水泵揚(yáng)程計算)

大家可能都知道開式冷卻塔的冷卻原理,設(shè)計過程對循環(huán)水降溫主要是按照蒸發(fā)散熱和接觸散熱的要求進(jìn)行。這兩種散熱的方式非常突出,在散熱過程在循環(huán)水冷卻中所起到的作用隨各個季節(jié)空氣的物理性質(zhì)不同而不同,春、夏、秋三季,室外氣溫偏高,水表面蒸發(fā)起到主要作用,最炎熱夏季的蒸發(fā)散熱量可達(dá)總散熱量的90%以上(水的溫度越高,水分子運(yùn)動越劇烈,蒸發(fā)越快)。在冬季,由于氣溫降低,接觸傳熱的作用增大,從夏季的10%~20%增大到50%,嚴(yán)寒天氣甚至可增大到70%。開式冷卻塔的設(shè)計,要求充分利用蒸發(fā)散熱,這就要求設(shè)計出的冷卻塔要盡全力的將相應(yīng)足量的水全部蒸發(fā)掉,才能達(dá)到冷卻效果!

開式冷卻塔滴下的水是通過空氣進(jìn)行吹動的,空氣把這部分水蒸發(fā)了,由于用于蒸發(fā)水滴的熱量降低了水的溫度,剩余的水就被冷卻了。這種方法的冷卻效果依賴于空氣的相對濕度以及壓力。當(dāng)水滴和空氣接觸時,一方面由于空氣與不的直接傳熱,另一方面由于水蒸汽表面和空氣之間存在壓力差,在壓力的作用下產(chǎn)生蒸發(fā)現(xiàn)象,帶到目前為走蒸發(fā)潛熱,將水中的熱量帶走即蒸發(fā)傳熱,從而達(dá)到降溫之目的。 冷卻塔的工作過程:圓形逆流式冷卻塔的工作過程為例:熱水自主機(jī)房通過水泵以一定的壓力經(jīng)過管道、橫喉、曲喉、中心喉將循環(huán)水壓至冷卻塔的播水系統(tǒng)內(nèi),通過播水管上的小孔將水均勻地播灑在填料上面;干燥的低晗值的空氣在風(fēng)機(jī)的作用下由底部入風(fēng)網(wǎng)進(jìn)入塔內(nèi),熱水流經(jīng)填料表面時形成水膜和空氣進(jìn)行熱交換,高濕度高晗值的熱風(fēng)從頂部抽出,冷卻水滴入底盆內(nèi),經(jīng)出水管流入主機(jī)。但是,水向空氣中的蒸發(fā)不會無休止地進(jìn)行下去。當(dāng)與水接觸的空氣不飽和時,水分子不斷地向空氣中蒸發(fā),但當(dāng)水氣接觸面上的空氣達(dá)到飽和時,水分子就蒸發(fā)不出去,而是處于一種動平衡狀態(tài)。蒸發(fā)出去的水分子數(shù)量等于從空氣中返回到水中的水分子的數(shù)量,水溫保持不變。

以上就是冷卻塔改造廠家廣東特菱節(jié)能空調(diào)為大家?guī)黹_式冷卻塔冷卻的設(shè)計原理介紹(開式冷卻塔冷卻水泵揚(yáng)程計算)的內(nèi)容,廣東特菱空調(diào)專業(yè)從事冷卻塔改造,冷卻塔維修,冷卻塔清洗,冷卻塔保養(yǎng),服務(wù)工業(yè)領(lǐng)域,產(chǎn)品包括玻璃鋼冷卻塔,工業(yè)冷卻塔等并提供全方位的冷卻塔改造方案,涵蓋深圳,廣州,珠海,惠州,東莞等,致力于打造變成優(yōu)質(zhì)的冷卻系統(tǒng)和配套設(shè)施服務(wù)項目的廠家。

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