冷卻塔噪音清理

冷卻塔降噪具體案例, 根據噪聲來源聲場分布和頻帶特性提出如下降噪方案：
1、為保證冷卻塔的散熱，不能對其進行封閉式隔聲處理，為此設置組合式聲屏障來阻止下部噪聲能量的傳播。
2、為有效減少噪聲聲波的繞射，在冷卻塔底部設置吸聲隔聲組合式聲屏障，吸收低頻噪聲
3、在冷卻塔中部設置阻尼隔聲板和寬頻帶組合式吸聲材料提高中低頻吸聲效果
4、落水的高頻噪聲用超細玻璃棉材料吸收
6、考慮到現場實際情況方案中的所有降噪設施都進行了防塵防潮處理同時不影響冷卻塔的通風和散熱功能。
為保證所有噪聲(sheng)(sheng)敏感點都在(zai)聲(sheng)(sheng)屏(ping)障(zhang)的(de)聲(sheng)(sheng)影區(qu)內，從而(er)獲得最佳的(de)降噪效(xiao)果，根據現場(chang)情況和(he)聲(sheng)(sheng)學計(ji)算確定聲(sheng)(sheng)屏(ping)障(zhang)有效(xiao)高度為3m，聲(sheng)(sheng)屏(ping)障(zhang)采用寬(kuan)(kuan)頻(pin)帶組合吸(xi)聲(sheng)(sheng)結(jie)構(gou)(gou)(gou)和(he)阻(zu)尼隔聲(sheng)(sheng)板的(de)組合式(shi)(shi)(shi)(shi)(shi)(shi)(shi)結(jie)構(gou)(gou)(gou)其(qi)(qi)中 寬(kuan)(kuan)頻(pin)帶組合式(shi)(shi)(shi)(shi)(shi)(shi)(shi)吸(xi)聲(sheng)(sheng)結(jie)構(gou)(gou)(gou)的(de)吸(xi)聲(sheng)(sheng)特(te)性(xing)曲(qu)線。 消(xiao)(xiao)聲(sheng)(sheng)器選擇現有的(de)阻(zu)性(xing)消(xiao)(xiao)聲(sheng)(sheng)器包括直(zhi)管式(shi)(shi)(shi)(shi)(shi)(shi)(shi)、復(fu)合式(shi)(shi)(shi)(shi)(shi)(shi)(shi)、片式(shi)(shi)(shi)(shi)(shi)(shi)(shi)、盤(pan)式(shi)(shi)(shi)(shi)(shi)(shi)(shi)和(he)折(zhe)板式(shi)(shi)(shi)(shi)(shi)(shi)(shi)等幾種方式(shi)(shi)(shi)(shi)(shi)(shi)(shi)，其(qi)(qi)中片式(shi)(shi)(shi)(shi)(shi)(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)器具有消(xiao)(xiao)聲(sheng)(sheng)量大，阻(zu)力(li)較小，導(dao)流效(xiao)果和(he)安裝靈 活的(de)特(te)點，因此選擇在(zai)風機出口(kou)處(chu)安裝片式(shi)(shi)(shi)(shi)(shi)(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)器，同時考慮到噪聲(sheng)(sheng)特(te)點在(zai)設計(ji)時特(te)別選用了寬(kuan)(kuan)頻(pin)吸(xi)聲(sheng)(sheng)材料(liao)

冷卻塔噪音生產原因

人(ren)類對改善生活環(huan)境要求的(de)日益增長和(he)水資(zi)源的(de)日趨緊張，是一對發展中的(de)矛(mao)盾，冷卻(que) 塔實現了(le)(le)冷卻(que)水循環(huan)利用，大大減少了(le)(le)熱交(jiao)換系統對冷卻(que)水的(de)消耗。因此，冷卻(que)塔在(zai)工業和(he)民用建筑等(deng)領域得到(dao)了(le)(le)廣泛(fan)應用，幵丏(mian)為(wei)節(jie)水事(shi)業作(zuo)出了(le)(le)重(zhong)大貢獻，但是它又產(chan)生噪聲，對環(huan)境造成噪音污(wu)染(ran)。這(zhe)一問題已被(bei)國家和(he)社會充分(fen)關注。

噪(zao)音(yin)污染是一(yi)種嚴(yan)重的環境問題(ti)，這是因為(wei)民(min)用(yong)(yong)冷卻(que)塔一(yi)般(ban)都安裝在居(ju)民(min)區，所(suo)以用(yong)(yong)戶 及其(qi)周(zhou)圍居(ju)民(min)都對(dui)(dui)冷卻(que)塔的噪(zao)聲指標提出了噪(zao)聲限值要求，為(wei)此各(ge)地環保局(ju)對(dui)(dui)冷卻(que)塔產(chan)品的生(sheng)產(chan)和使用(yong)(yong)做出了嚴(yan)格的限制。

冷卻塔降噪標準

《中華人民共和國環境保護法》及《中華人民共和國環境噪聲污染防治條例》，保障城市居民的生活聲環境質量，我國制訂了《社會生活環境噪聲排放標準 GB22337-2008》。
1、城市區域環境噪聲標準限值見表：
2、夜間突發的噪聲，其最大值不準超過標準值15dB。
3、區域及時間的劃定：
(1)、各類標準適用區域由當地人民政府劃定。
(2)、本標準晝間、夜(ye)間的時間由當地(di)(di)人民政(zheng)府按當地(di)(di)習慣和季(ji)節變(bian)化劃(hua)定。

冷卻塔降噪方法

冷卻(que)塔降(jiang)(jiang)噪(zao)(zao)防凍裝(zhuang)置專用吸(xi)(xi)(xi)音(yin)降(jiang)(jiang)噪(zao)(zao)板，包括支(zhi)撐架、小(xiao)圓(yuan)弧導(dao)風頭、多(duo)孔板、防水無紡布、吸(xi)(xi)(xi)音(yin)棉，多(duo)孔板包覆在(zai)支(zhi)撐架的(de)(de)(de)左右側面(mian)和尾部端(duan)面(mian)上(shang)，在(zai)支(zhi)撐架內填充吸(xi)(xi)(xi)音(yin)棉，吸(xi)(xi)(xi)音(yin)降(jiang)(jiang)噪(zao)(zao)板的(de)(de)(de)截面(mian)形(xing)狀為(wei)"子(zi)彈"形(xing)，由(you)(you)(you)于吸(xi)(xi)(xi)音(yin)降(jiang)(jiang)噪(zao)(zao)板的(de)(de)(de)外端(duan)由(you)(you)(you)小(xiao)圓(yuan)弧導(dao)風頭與(yu)梯形(xing)吸(xi)(xi)(xi)音(yin)段(duan)對接而成，在(zai)相同間距(ju)條件下，增大了(le)(le)兩相鄰吸(xi)(xi)(xi)音(yin)降(jiang)(jiang)噪(zao)(zao)板之間進(jin)風口截面(mian)，更利(li)于進(jin)風導(dao)入(ru)，提(ti)(ti)高了(le)(le)進(jin)風的(de)(de)(de)導(dao)入(ru)風速；由(you)(you)(you)于將尾部端(duan)面(mian)設計(ji)成吸(xi)(xi)(xi)音(yin)結構，增大了(le)(le)吸(xi)(xi)(xi)音(yin)降(jiang)(jiang)噪(zao)(zao)板的(de)(de)(de)有效吸(xi)(xi)(xi)音(yin)面(mian)積，提(ti)(ti)高了(le)(le)吸(xi)(xi)(xi)音(yin)降(jiang)(jiang)噪(zao)(zao)效果(guo)，經試驗，在(zai)同等試驗條件下，降(jiang)(jiang)噪(zao)(zao)效果(guo)提(ti)(ti)高10％～15％。

冷卻塔降噪特點

冷卻塔降噪方案

隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)一(yi)般設計為(wei)(wei)距(ju)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)進風(feng)(feng)(feng)(feng)口(kou)(kou)的(de)(de)(de)(de)(de)(de)距(ju)離(li)(li)大(da)于(yu)(yu)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)進風(feng)(feng)(feng)(feng)口(kou)(kou)高(gao)(gao)(gao)度(du)(du)，屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)高(gao)(gao)(gao)度(du)(du)等(deng)于(yu)(yu)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)到(dao)進風(feng)(feng)(feng)(feng)口(kou)(kou)的(de)(de)(de)(de)(de)(de)距(ju)離(li)(li)。降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)一(yi)般在10-15dBA，理(li)論上(shang)(shang)(shang)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)量可(ke)2OdB(A)左右，但存在著聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)繞(rao)(rao)(rao)(rao)射(she)問題，在 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影區范圍內降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)量較(jiao)好(hao)，繞(rao)(rao)(rao)(rao)射(she)區和聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)亮區降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)較(jiao)差，因此實際工程上(shang)(shang)(shang)很(hen)難(nan)將其(qi)影響(xiang)區內噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)低(di)20dB(A)；對(dui)(dui)通(tong)(tong)風(feng)(feng)(feng)(feng)影響(xiang)不(bu)大(da)，維護比較(jiao)簡單；建設聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)技術(shu)要(yao)求(qiu)(qiu)不(bu)高(gao)(gao)(gao)，但對(dui)(dui)結構要(yao)求(qiu)(qiu) 相當高(gao)(gao)(gao)，并(bing)(bing)且(qie)投資成(cheng)(cheng)本隨著高(gao)(gao)(gao)度(du)(du)的(de)(de)(de)(de)(de)(de)增加(jia)(jia)成(cheng)(cheng)倍增加(jia)(jia)；隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)法(fa)及(ji)特(te)點： 隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)結構可(ke)分(fen)為(wei)(wei)地上(shang)(shang)(shang)和地下(xia)二部(bu)(bu)分(fen)，地上(shang)(shang)(shang)部(bu)(bu)分(fen)為(wei)(wei)厚約 20 cm的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)巨型、連續板式立面（包括斜(xie)撐），其(qi)頂(ding)部(bu)(bu)為(wei)(wei)扇形(xing)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)體或(huo)內傾(qing)式遮(zhe)檐；地下(xia)部(bu)(bu)分(fen)則為(wei)(wei)承重(zhong)、抗(kang)傾(qing)覆（風(feng)(feng)(feng)(feng) 荷(he)載(zai)）的(de)(de)(de)(de)(de)(de)基(ji)礎。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)遇到(dao)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)發生的(de)(de)(de)(de)(de)(de)繞(rao)(rao)(rao)(rao)射(she)現象會減(jian)弱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)用(yong)，而(er)(er)繞(rao)(rao)(rao)(rao)射(she)能(neng)(neng)力(li)與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)頻(pin)(pin)率有關(guan)，所以(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)頻(pin)(pin)率即波(bo)(bo)(bo)長的(de)(de)(de)(de)(de)(de)關(guan)系很(hen)大(da)。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang) 對(dui)(dui)于(yu)(yu)波(bo)(bo)(bo)長短、不(bu)易繞(rao)(rao)(rao)(rao)射(she)的(de)(de)(de)(de)(de)(de)高(gao)(gao)(gao)頻(pin)(pin)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽作(zuo)用(yong)十(shi)分(fen)顯著，可(ke)以(yi)(yi)在屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)后面形(xing)成(cheng)(cheng)很(hen)長的(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影區；而(er)(er)對(dui)(dui)于(yu)(yu)波(bo)(bo)(bo)長、具有很(hen)強(qiang)繞(rao)(rao)(rao)(rao)射(she)能(neng)(neng)力(li)的(de)(de)(de)(de)(de)(de)低(di)頻(pin)(pin)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽作(zuo)用(yong)則十(shi)分(fen)有限(xian)。當然(ran)，也可(ke)以(yi)(yi)通(tong)(tong)過加(jia)(jia)高(gao)(gao)(gao)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)辦法(fa) 來削弱繞(rao)(rao)(rao)(rao)射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)對(dui)(dui)受聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點的(de)(de)(de)(de)(de)(de)影響(xiang)。由于(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)對(dui)(dui)高(gao)(gao)(gao)頻(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)產生明顯有效(xiao)的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽作(zuo)用(yong)，而(er)(er)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)落(luo)水(shui)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)頻(pin)(pin)譜以(yi)(yi)中(zhong)高(gao)(gao)(gao)頻(pin)(pin)成(cheng)(cheng)分(fen)為(wei)(wei)主，所以(yi)(yi)采用(yong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)可(ke)以(yi)(yi)取得一(yi)定(ding)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)以(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影區中(zhong)緊挨(ai)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)局部(bu)(bu)區域為(wei)(wei)最好(hao)，最高(gao)(gao)(gao)可(ke)達(da) 25 db 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影區以(yi)(yi)外(wai)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級則由于(yu)(yu)中(zhong)頻(pin)(pin)繞(rao)(rao)(rao)(rao)射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)到(dao)達(da)而(er)(er)有所反彈，但對(dui)(dui)于(yu)(yu)高(gao)(gao)(gao)頻(pin)(pin)波(bo)(bo)(bo)而(er)(er)言，衰減(jian)量一(yi)般還(huan)可(ke)達(da)到(dao) 10－ 15db 然(ran)而(er)(er)由于(yu)(yu)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)落(luo)水(shui)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)中(zhong)尚含有中(zhong)頻(pin)(pin)成(cheng)(cheng)分(fen)，所以(yi)(yi)其(qi)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)會有折(zhe)扣。對(dui)(dui)于(yu)(yu)建筑外(wai)受聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點來說(shuo)，為(wei)(wei)取得滿意的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)(guo)，在不(bu)影響(xiang)進風(feng)(feng)(feng)(feng)的(de)(de)(de)(de)(de)(de)前提(ti)下(xia)，尚應通(tong)(tong)過加(jia)(jia)大(da)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)高(gao)(gao)(gao)度(du)(du)調(diao)節之。 安(an)裝(zhuang)隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)時(shi)主要(yao)注(zhu)意的(de)(de)(de)(de)(de)(de)是隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)離(li)(li)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)百葉(xie)進風(feng)(feng)(feng)(feng) 口(kou)(kou)的(de)(de)(de)(de)(de)(de)距(ju)離(li)(li)在1m左右以(yi)(yi)保(bao)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)換氣進風(feng)(feng)(feng)(feng)口(kou)(kou)不(bu)受阻，從而(er)(er)使(shi)冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)冷(leng)(leng)(leng)卻(que)(que)效(xiao)果(guo)(guo)更(geng)好(hao) 。 為(wei)(wei)防止噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)繞(rao)(rao)(rao)(rao)射(she)而(er)(er)影響(xiang)消聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流片的(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學效(xiao)果(guo)(guo)，可(ke) 以(yi)(yi)在消聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流片附近(jin)安(an)裝(zhuang)一(yi)定(ding)長度(du)(du)的(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)，起到(dao)輔助降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)作(zuo)用(yong)。 落(luo)水(shui)消聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)法(fa)及(ji)特(te)點 ：即在冷(leng)(leng)(leng)卻(que)(que)塔(ta)(ta)底部(bu)(bu)水(shui)面以(yi)(yi)上(shang)(shang)(shang)安(an)裝(zhuang)落(luo)水(shui)消能(neng)(neng) 降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)材(cai)料，從源頭(tou)著手降(jiang)(jiang)低(di)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源。 降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao) 效(xiao)果(guo)(guo)一(yi)般在6— 10dBA；初次投資較(jiao)少(shao)，對(dui)(dui)通(tong)(tong)風(feng)(feng)(feng)(feng)散熱沒有影響(xiang)；缺點是降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)量較(jiao)少(shao)，部(bu)(bu)件易損(sun)壞，維護工作(zuo)量大(da)， 需(xu)要(yao)持續投入，并(bing)(bing)還(huan)可(ke)能(neng)(neng)引起凝(ning)汽器管子堵塞的(de)(de)(de)(de)(de)(de)問題。 "落(luo)水(shui)消能(neng)(neng)降(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)器" 以(yi)(yi)六角蜂窩斜(xie) 管為(wei)(wei)主體形(xing)式，層高(gao)(gao)(gao) 18 cm，由豎向導(dao)入段(duan)、無聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)擦(ca)貼斜(xie)段(duan)、粘滯減(jian)速斜(xie)段(duan)、疏散灑落(luo)挑流段(duan)等(deng)四個功(gong)能(neng)(neng)段(duan)組成(cheng)(cheng)。