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(wei)(wei)保證所有(you)噪聲(sheng)敏感點都在聲(sheng)屏障的(de)(de)聲(sheng)影區內(nei)，從而獲得最佳的(de)(de)降噪效(xiao)果，根據(ju)現場情況和(he)聲(sheng)學計(ji)算確定聲(sheng)屏障有(you)效(xiao)高度(du)為(wei)(wei)3m，聲(sheng)屏障采用(yong)寬(kuan)(kuan)頻帶(dai)組合(he)吸(xi)(xi)(xi)聲(sheng)結(jie)構(gou)和(he)阻尼隔聲(sheng)板(ban)(ban)的(de)(de)組合(he)式結(jie)構(gou)其中 寬(kuan)(kuan)頻帶(dai)組合(he)式吸(xi)(xi)(xi)聲(sheng)結(jie)構(gou)的(de)(de)吸(xi)(xi)(xi)聲(sheng)特(te)(te)性曲(qu)線。 消(xiao)聲(sheng)器選擇現有(you)的(de)(de)阻性消(xiao)聲(sheng)器包括(kuo)直管式、復合(he)式、片(pian)式、盤式和(he)折(zhe)板(ban)(ban)式等幾種方式，其中片(pian)式消(xiao)聲(sheng)器具有(you)消(xiao)聲(sheng)量(liang)大(da)，阻力較小，導(dao)流效(xiao)果和(he)安裝靈 活的(de)(de)特(te)(te)點，因(yin)此選擇在風機出口處安裝片(pian)式消(xiao)聲(sheng)器，同時考慮到噪聲(sheng)特(te)(te)點在設計(ji)時特(te)(te)別選用(yong)了寬(kuan)(kuan)頻吸(xi)(xi)(xi)聲(sheng)材(cai)料

冷卻塔噪音生產原因

人類對(dui)改善生活環境要求的(de)(de)日(ri)益(yi)增長和(he)水(shui)資(zi)源的(de)(de)日(ri)趨(qu)緊張(zhang)，是一(yi)對(dui)發展中的(de)(de)矛盾，冷(leng)(leng)卻 塔實現(xian)了(le)冷(leng)(leng)卻水(shui)循環利用(yong)，大(da)(da)大(da)(da)減少了(le)熱交換系統對(dui)冷(leng)(leng)卻水(shui)的(de)(de)消耗。因此，冷(leng)(leng)卻塔在工業和(he)民用(yong)建筑等領域(yu)得到了(le)廣泛應用(yong)，幵丏為節水(shui)事業作出了(le)重大(da)(da)貢獻，但是它又產生噪聲，對(dui)環境造成噪音污染。這(zhe)一(yi)問題已被國家和(he)社會充分關注。

噪(zao)音污(wu)染是(shi)一種嚴重的環境問題，這是(shi)因為(wei)民用(yong)(yong)冷(leng)卻(que)塔(ta)(ta)一般都安裝在居民區，所以(yi)用(yong)(yong)戶(hu) 及其周圍居民都對冷(leng)卻(que)塔(ta)(ta)的噪(zao)聲指標提出了噪(zao)聲限(xian)值要求(qiu)，為(wei)此各(ge)地環保局對冷(leng)卻(que)塔(ta)(ta)產品的生產和使用(yong)(yong)做出了嚴格(ge)的限(xian)制(zhi)。

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、夜間的時(shi)間由當(dang)(dang)地人民政府按當(dang)(dang)地習(xi)慣和季節變化劃定。

(時段) 邊界外聲環境功能區	晝間	夜間
0	50	40
1	55	45
2	60	50
3	65	55
4	70	55

冷卻塔降噪方法

冷卻塔降(jiang)噪(zao)防凍裝置(zhi)專用(yong)吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)板(ban)(ban)，包括支(zhi)(zhi)撐(cheng)架、小圓弧導風(feng)頭、多孔板(ban)(ban)、防水無紡布、吸(xi)(xi)(xi)音(yin)(yin)棉，多孔板(ban)(ban)包覆在(zai)支(zhi)(zhi)撐(cheng)架的(de)左(zuo)右(you)側(ce)面(mian)(mian)和尾(wei)部(bu)端(duan)面(mian)(mian)上，在(zai)支(zhi)(zhi)撐(cheng)架內填充吸(xi)(xi)(xi)音(yin)(yin)棉，吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)板(ban)(ban)的(de)截面(mian)(mian)形狀為(wei)"子彈"形，由于吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)板(ban)(ban)的(de)外端(duan)由小圓弧導風(feng)頭與梯形吸(xi)(xi)(xi)音(yin)(yin)段對接而(er)成，在(zai)相同間(jian)距條(tiao)件(jian)下(xia)，增大(da)了(le)兩(liang)相鄰吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)板(ban)(ban)之間(jian)進(jin)風(feng)口截面(mian)(mian)，更利于進(jin)風(feng)導入(ru)，提高了(le)進(jin)風(feng)的(de)導入(ru)風(feng)速(su)；由于將(jiang)尾(wei)部(bu)端(duan)面(mian)(mian)設計(ji)成吸(xi)(xi)(xi)音(yin)(yin)結構，增大(da)了(le)吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)板(ban)(ban)的(de)有效吸(xi)(xi)(xi)音(yin)(yin)面(mian)(mian)積，提高了(le)吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)效果，經試驗，在(zai)同等試驗條(tiao)件(jian)下(xia)，降(jiang)噪(zao)效果提高10％～15％。

冷卻塔降噪特點

1.【特菱公司超靜音冷卻塔生產標準】
2.【玻璃纖維增強塑料冷卻塔第1部分：中小型玻璃纖維增強塑料冷卻塔】（GB7190.1-2008）；???????
3.【塑料密度和相對密度試驗方法】GB/T1033；
4.【塑料拉伸性能試驗方法?】GB/T1040；
5.【玻璃纖維增強塑料彎曲性能試驗方法】（GB/T1449-83）；
6.【塑料燃燒性能試驗方法氧指數法】（GB/T2406）；
7.【玻璃纖維增強塑料樹脂含量試驗方法】（GB/T2577-89）；
8.【纖維增強塑料巴氏（巴柯爾）硬度試驗方法】（GB/T3854-83）； 9.【玻璃纖維增強塑料燃燒性能試驗方法氧指數法】?（GB/T8924-88）；
10.【超靜音冷卻塔風機】HG/T3132-1998?此標準是對ZBJ72001L型冷卻塔風機]標準的修改而編制的；
11.【超靜音冷卻塔性能測試】?CTIATC-105；
12.【超靜音冷卻塔性能測試方法】BS?4485:PART2；
13.【超靜音冷卻塔熱力性能驗收測試】DIN?1947；
14 【機力通風式冷卻塔性能實驗方法】JIS?B8609

冷卻塔降噪方案

隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)一(yi)(yi)般(ban)(ban)(ban)設(she)計(ji)為(wei)(wei)(wei)距冷卻(que)(que)(que)(que)(que)塔進風(feng)口的(de)(de)(de)(de)(de)(de)(de)(de)距離大(da)(da)于(yu)(yu)冷卻(que)(que)(que)(que)(que)塔進風(feng)口高(gao)(gao)(gao)(gao)(gao)度，屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)高(gao)(gao)(gao)(gao)(gao)度等于(yu)(yu)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)到(dao)(dao)進風(feng)口的(de)(de)(de)(de)(de)(de)(de)(de)距離。降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)一(yi)(yi)般(ban)(ban)(ban)在(zai)(zai)10-15dBA，理論上降(jiang)噪(zao)(zao)(zao)量可(ke)(ke)(ke)(ke)2OdB(A)左右(you)，但(dan)存在(zai)(zai)著聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)繞(rao)(rao)射(she)(she)問題，在(zai)(zai) 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)(qu)范圍內降(jiang)噪(zao)(zao)(zao)量較好(hao)，繞(rao)(rao)射(she)(she)區(qu)(qu)(qu)(qu)和聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)亮區(qu)(qu)(qu)(qu)降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)較差，因此(ci)實際工程上很(hen)(hen)(hen)難將其影(ying)響(xiang)區(qu)(qu)(qu)(qu)內噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降(jiang)低(di)20dB(A)；對(dui)(dui)通(tong)風(feng)影(ying)響(xiang)不(bu)大(da)(da)，維(wei)護(hu)比(bi)較簡單(dan)；建設(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)技術要(yao)求不(bu)高(gao)(gao)(gao)(gao)(gao)，但(dan)對(dui)(dui)結(jie)(jie)構(gou)要(yao)求 相當高(gao)(gao)(gao)(gao)(gao)，并(bing)且投(tou)資成(cheng)(cheng)本(ben)隨著高(gao)(gao)(gao)(gao)(gao)度的(de)(de)(de)(de)(de)(de)(de)(de)增加(jia)成(cheng)(cheng)倍增加(jia)；隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)法及(ji)特點(dian)： 隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)結(jie)(jie)構(gou)可(ke)(ke)(ke)(ke)分(fen)(fen)為(wei)(wei)(wei)地上和地下(xia)二部(bu)(bu)分(fen)(fen)，地上部(bu)(bu)分(fen)(fen)為(wei)(wei)(wei)厚約 20 cm的(de)(de)(de)(de)(de)(de)(de)(de)屏(ping)(ping)蔽(bi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)巨(ju)型(xing)、連續板式(shi)立(li)面(mian)（包(bao)括斜(xie)撐），其頂部(bu)(bu)為(wei)(wei)(wei)扇形吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)體或內傾式(shi)遮檐(yan)；地下(xia)部(bu)(bu)分(fen)(fen)則為(wei)(wei)(wei)承(cheng)重、抗(kang)傾覆（風(feng) 荷(he)載(zai)）的(de)(de)(de)(de)(de)(de)(de)(de)基(ji)礎(chu)。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)遇到(dao)(dao)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)發生的(de)(de)(de)(de)(de)(de)(de)(de)繞(rao)(rao)射(she)(she)現(xian)象會減(jian)弱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)(zuo)用(yong)(yong)，而繞(rao)(rao)射(she)(she)能力與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)(pin)(pin)率(lv)有(you)(you)(you)關，所以(yi)(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)(pin)(pin)率(lv)即波(bo)(bo)(bo)長的(de)(de)(de)(de)(de)(de)(de)(de)關系很(hen)(hen)(hen)大(da)(da)。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang) 對(dui)(dui)于(yu)(yu)波(bo)(bo)(bo)長短、不(bu)易繞(rao)(rao)射(she)(she)的(de)(de)(de)(de)(de)(de)(de)(de)高(gao)(gao)(gao)(gao)(gao)頻(pin)(pin)(pin)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)屏(ping)(ping)蔽(bi)作(zuo)(zuo)用(yong)(yong)十(shi)分(fen)(fen)顯(xian)著，可(ke)(ke)(ke)(ke)以(yi)(yi)(yi)在(zai)(zai)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)后面(mian)形成(cheng)(cheng)很(hen)(hen)(hen)長的(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)(qu)；而對(dui)(dui)于(yu)(yu)波(bo)(bo)(bo)長、具有(you)(you)(you)很(hen)(hen)(hen)強繞(rao)(rao)射(she)(she)能力的(de)(de)(de)(de)(de)(de)(de)(de)低(di)頻(pin)(pin)(pin)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)屏(ping)(ping)蔽(bi)作(zuo)(zuo)用(yong)(yong)則十(shi)分(fen)(fen)有(you)(you)(you)限。當然(ran)，也可(ke)(ke)(ke)(ke)以(yi)(yi)(yi)通(tong)過(guo)加(jia)高(gao)(gao)(gao)(gao)(gao)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)辦法 來(lai)削弱繞(rao)(rao)射(she)(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)對(dui)(dui)受(shou)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)的(de)(de)(de)(de)(de)(de)(de)(de)影(ying)響(xiang)。由于(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)對(dui)(dui)高(gao)(gao)(gao)(gao)(gao)頻(pin)(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)產生明顯(xian)有(you)(you)(you)效(xiao)(xiao)的(de)(de)(de)(de)(de)(de)(de)(de)屏(ping)(ping)蔽(bi)作(zuo)(zuo)用(yong)(yong)，而冷卻(que)(que)(que)(que)(que)塔落水(shui)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)(pin)(pin)譜(pu)以(yi)(yi)(yi)中(zhong)(zhong)高(gao)(gao)(gao)(gao)(gao)頻(pin)(pin)(pin)成(cheng)(cheng)分(fen)(fen)為(wei)(wei)(wei)主，所以(yi)(yi)(yi)采用(yong)(yong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)可(ke)(ke)(ke)(ke)以(yi)(yi)(yi)取得一(yi)(yi)定(ding)(ding)的(de)(de)(de)(de)(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)以(yi)(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)(qu)中(zhong)(zhong)緊挨屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)局部(bu)(bu)區(qu)(qu)(qu)(qu)域為(wei)(wei)(wei)最好(hao)，最高(gao)(gao)(gao)(gao)(gao)可(ke)(ke)(ke)(ke)達(da)(da) 25 db 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)(qu)以(yi)(yi)(yi)外(wai)的(de)(de)(de)(de)(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級則由于(yu)(yu)中(zhong)(zhong)頻(pin)(pin)(pin)繞(rao)(rao)射(she)(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)(de)(de)(de)(de)(de)(de)到(dao)(dao)達(da)(da)而有(you)(you)(you)所反彈，但(dan)對(dui)(dui)于(yu)(yu)高(gao)(gao)(gao)(gao)(gao)頻(pin)(pin)(pin)波(bo)(bo)(bo)而言，衰(shuai)減(jian)量一(yi)(yi)般(ban)(ban)(ban)還可(ke)(ke)(ke)(ke)達(da)(da)到(dao)(dao) 10－ 15db 然(ran)而由于(yu)(yu)冷卻(que)(que)(que)(que)(que)塔落水(shui)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)中(zhong)(zhong)尚含(han)有(you)(you)(you)中(zhong)(zhong)頻(pin)(pin)(pin)成(cheng)(cheng)分(fen)(fen)，所以(yi)(yi)(yi)其降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)會有(you)(you)(you)折(zhe)扣。對(dui)(dui)于(yu)(yu)建筑外(wai)受(shou)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)來(lai)說(shuo)，為(wei)(wei)(wei)取得滿意的(de)(de)(de)(de)(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)效(xiao)(xiao)果(guo)，在(zai)(zai)不(bu)影(ying)響(xiang)進風(feng)的(de)(de)(de)(de)(de)(de)(de)(de)前提(ti)下(xia)，尚應(ying)通(tong)過(guo)加(jia)大(da)(da)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)高(gao)(gao)(gao)(gao)(gao)度調節之(zhi)。 安(an)裝隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)時主要(yao)注意的(de)(de)(de)(de)(de)(de)(de)(de)是隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)離冷卻(que)(que)(que)(que)(que)塔百葉進風(feng) 口的(de)(de)(de)(de)(de)(de)(de)(de)距離在(zai)(zai)1m左右(you)以(yi)(yi)(yi)保冷卻(que)(que)(que)(que)(que)塔換氣(qi)進風(feng)口不(bu)受(shou)阻，從而使冷卻(que)(que)(que)(que)(que)塔冷卻(que)(que)(que)(que)(que)效(xiao)(xiao)果(guo)更(geng)好(hao) 。 為(wei)(wei)(wei)防止噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)繞(rao)(rao)射(she)(she)而影(ying)響(xiang)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流片(pian)的(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學(xue)效(xiao)(xiao)果(guo)，可(ke)(ke)(ke)(ke) 以(yi)(yi)(yi)在(zai)(zai)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流片(pian)附近安(an)裝一(yi)(yi)定(ding)(ding)長度的(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)，起到(dao)(dao)輔助降(jiang)噪(zao)(zao)(zao)作(zuo)(zuo)用(yong)(yong)。 落水(shui)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)法及(ji)特點(dian) ：即在(zai)(zai)冷卻(que)(que)(que)(que)(que)塔底部(bu)(bu)水(shui)面(mian)以(yi)(yi)(yi)上安(an)裝落水(shui)消(xiao)(xiao)能 降(jiang)噪(zao)(zao)(zao)材料(liao)，從源頭著手降(jiang)低(di)噪(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源。 降(jiang)噪(zao)(zao)(zao) 效(xiao)(xiao)果(guo)一(yi)(yi)般(ban)(ban)(ban)在(zai)(zai)6— 10dBA；初次投(tou)資較少，對(dui)(dui)通(tong)風(feng)散熱沒有(you)(you)(you)影(ying)響(xiang)；缺點(dian)是降(jiang)噪(zao)(zao)(zao)量較少，部(bu)(bu)件易損壞，維(wei)護(hu)工作(zuo)(zuo)量大(da)(da)， 需要(yao)持續投(tou)入，并(bing)還可(ke)(ke)(ke)(ke)能引起凝(ning)汽(qi)器管子堵塞的(de)(de)(de)(de)(de)(de)(de)(de)問題。 "落水(shui)消(xiao)(xiao)能降(jiang)噪(zao)(zao)(zao)器" 以(yi)(yi)(yi)六(liu)角蜂窩斜(xie) 管為(wei)(wei)(wei)主體形式(shi)，層(ceng)高(gao)(gao)(gao)(gao)(gao) 18 cm，由豎向導(dao)入段(duan)、無聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)擦貼斜(xie)段(duan)、粘(zhan)滯減(jian)速(su)斜(xie)段(duan)、疏散灑落挑(tiao)流段(duan)等四(si)個功能段(duan)組成(cheng)(cheng)。