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)保證所有噪聲(sheng)(sheng)(sheng)敏(min)感點(dian)都在聲(sheng)(sheng)(sheng)屏障(zhang)(zhang)的(de)聲(sheng)(sheng)(sheng)影區內，從(cong)而獲得最佳的(de)降噪效(xiao)果，根據現場(chang)情況(kuang)和(he)聲(sheng)(sheng)(sheng)學計算確定聲(sheng)(sheng)(sheng)屏障(zhang)(zhang)有效(xiao)高度(du)為(wei)3m，聲(sheng)(sheng)(sheng)屏障(zhang)(zhang)采用(yong)寬(kuan)頻(pin)帶組合吸(xi)聲(sheng)(sheng)(sheng)結構(gou)和(he)阻尼(ni)隔聲(sheng)(sheng)(sheng)板(ban)的(de)組合式(shi)結構(gou)其(qi)中(zhong) 寬(kuan)頻(pin)帶組合式(shi)吸(xi)聲(sheng)(sheng)(sheng)結構(gou)的(de)吸(xi)聲(sheng)(sheng)(sheng)特(te)性(xing)曲線。 消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)選(xuan)擇(ze)現有的(de)阻性(xing)消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)包(bao)括(kuo)直管式(shi)、復合式(shi)、片式(shi)、盤式(shi)和(he)折(zhe)板(ban)式(shi)等幾種方式(shi)，其(qi)中(zhong)片式(shi)消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)具有消(xiao)聲(sheng)(sheng)(sheng)量大，阻力較(jiao)小，導流效(xiao)果和(he)安裝靈(ling) 活的(de)特(te)點(dian)，因此選(xuan)擇(ze)在風機出口(kou)處(chu)安裝片式(shi)消(xiao)聲(sheng)(sheng)(sheng)器(qi)(qi)，同時考(kao)慮到噪聲(sheng)(sheng)(sheng)特(te)點(dian)在設計時特(te)別選(xuan)用(yong)了(le)寬(kuan)頻(pin)吸(xi)聲(sheng)(sheng)(sheng)材(cai)料

冷卻塔噪音生產原因

人(ren)類對(dui)(dui)改善生(sheng)活環(huan)(huan)境要求(qiu)的日(ri)益增(zeng)長(chang)和水資源(yuan)的日(ri)趨緊(jin)張，是(shi)一(yi)對(dui)(dui)發展中的矛盾，冷(leng)卻(que) 塔實現了(le)冷(leng)卻(que)水循環(huan)(huan)利用，大大減(jian)少了(le)熱交(jiao)換系(xi)統對(dui)(dui)冷(leng)卻(que)水的消耗。因此，冷(leng)卻(que)塔在工業(ye)和民用建筑等領域得到了(le)廣(guang)泛應用，幵丏為節水事(shi)業(ye)作出了(le)重(zhong)大貢獻，但是(shi)它又產(chan)生(sheng)噪聲，對(dui)(dui)環(huan)(huan)境造成噪音污染。這一(yi)問題已被國家和社會充分(fen)關注。

噪音污染是一種嚴重的環境問題，這是因為民用冷卻(que)塔一般(ban)都(dou)安裝在居民區，所以(yi)用戶 及(ji)其周圍居民都(dou)對(dui)冷卻(que)塔的噪聲指標提出(chu)了(le)噪聲限值要求(qiu)，為此各地環保局對(dui)冷卻(que)塔產(chan)品的生產(chan)和(he)使用做出(chu)了(le)嚴格(ge)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(ben)標準晝間(jian)(jian)、夜間(jian)(jian)的(de)時間(jian)(jian)由當地人民(min)政(zheng)府按當地習(xi)慣和季(ji)節變化(hua)劃(hua)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)(zao)(zao)防凍裝置專(zhuan)用吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)(zao)(zao)板(ban)(ban)，包(bao)括支(zhi)撐架、小(xiao)(xiao)圓(yuan)弧導風(feng)(feng)頭、多(duo)孔板(ban)(ban)、防水無(wu)紡布、吸(xi)(xi)(xi)音(yin)(yin)棉，多(duo)孔板(ban)(ban)包(bao)覆在(zai)支(zhi)撐架的左右側面和尾(wei)部端(duan)面上，在(zai)支(zhi)撐架內填充吸(xi)(xi)(xi)音(yin)(yin)棉，吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)(zao)(zao)板(ban)(ban)的截面形(xing)狀為(wei)"子彈"形(xing)，由(you)于(yu)吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)(zao)(zao)板(ban)(ban)的外端(duan)由(you)小(xiao)(xiao)圓(yuan)弧導風(feng)(feng)頭與梯(ti)形(xing)吸(xi)(xi)(xi)音(yin)(yin)段對(dui)接而成，在(zai)相同(tong)間(jian)距條件下，增大了(le)兩相鄰吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)(zao)(zao)板(ban)(ban)之間(jian)進風(feng)(feng)口截面，更(geng)利(li)于(yu)進風(feng)(feng)導入(ru)，提(ti)(ti)高(gao)了(le)進風(feng)(feng)的導入(ru)風(feng)(feng)速(su)；由(you)于(yu)將尾(wei)部端(duan)面設(she)計成吸(xi)(xi)(xi)音(yin)(yin)結構，增大了(le)吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)(zao)(zao)板(ban)(ban)的有(you)效(xiao)吸(xi)(xi)(xi)音(yin)(yin)面積，提(ti)(ti)高(gao)了(le)吸(xi)(xi)(xi)音(yin)(yin)降(jiang)噪(zao)(zao)(zao)效(xiao)果，經試(shi)驗(yan)，在(zai)同(tong)等試(shi)驗(yan)條件下，降(jiang)噪(zao)(zao)(zao)效(xiao)果提(ti)(ti)高(gao)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)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)一(yi)般(ban)設計為(wei)(wei)(wei)距冷(leng)卻(que)塔(ta)進(jin)風(feng)(feng)口(kou)的(de)(de)(de)(de)距離大(da)于(yu)(yu)冷(leng)卻(que)塔(ta)進(jin)風(feng)(feng)口(kou)高(gao)(gao)(gao)(gao)度(du)，屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)高(gao)(gao)(gao)(gao)度(du)等(deng)于(yu)(yu)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)到進(jin)風(feng)(feng)口(kou)的(de)(de)(de)(de)距離。降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)一(yi)般(ban)在(zai)(zai)(zai)10-15dBA，理論上(shang)降(jiang)噪(zao)(zao)(zao)(zao)(zao)量(liang)(liang)可(ke)(ke)(ke)2OdB(A)左右，但(dan)存在(zai)(zai)(zai)著聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)繞(rao)射(she)問(wen)題，在(zai)(zai)(zai) 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)范(fan)圍(wei)內(nei)降(jiang)噪(zao)(zao)(zao)(zao)(zao)量(liang)(liang)較(jiao)(jiao)好，繞(rao)射(she)區(qu)(qu)(qu)和聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)亮區(qu)(qu)(qu)降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)較(jiao)(jiao)差，因此(ci)實際工程上(shang)很(hen)難(nan)將其影(ying)響(xiang)區(qu)(qu)(qu)內(nei)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降(jiang)低(di)(di)20dB(A)；對(dui)(dui)通風(feng)(feng)影(ying)響(xiang)不(bu)大(da)，維護(hu)比較(jiao)(jiao)簡單；建設聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)技術要(yao)求(qiu)不(bu)高(gao)(gao)(gao)(gao)，但(dan)對(dui)(dui)結構要(yao)求(qiu)相(xiang)當(dang)高(gao)(gao)(gao)(gao)，并且投(tou)(tou)資(zi)成(cheng)(cheng)本隨著高(gao)(gao)(gao)(gao)度(du)的(de)(de)(de)(de)增(zeng)加(jia)(jia)成(cheng)(cheng)倍增(zeng)加(jia)(jia)；隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)法及特點(dian)(dian)(dian)：隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)結構可(ke)(ke)(ke)分(fen)為(wei)(wei)(wei)地(di)上(shang)和地(di)下(xia)(xia)二(er)部(bu)分(fen)，地(di)上(shang)部(bu)分(fen)為(wei)(wei)(wei)厚約 20 cm的(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)蔽聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)(de)(de)(de)巨型、連續(xu)板式(shi)(shi)立面（包括斜撐），其頂部(bu)為(wei)(wei)(wei)扇形(xing)(xing)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)體或內(nei)傾式(shi)(shi)遮檐；地(di)下(xia)(xia)部(bu)分(fen)則(ze)為(wei)(wei)(wei)承(cheng)重、抗傾覆(fu)（風(feng)(feng)荷(he)載）的(de)(de)(de)(de)基礎。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)遇到屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)發(fa)生的(de)(de)(de)(de)繞(rao)射(she)現象會(hui)減弱(ruo)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作用(yong)(yong)，而(er)(er)繞(rao)射(she)能力(li)與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)(de)(de)(de)頻(pin)率有(you)關(guan)，所以(yi)(yi)(yi)(yi)(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)(de)(de)(de)頻(pin)率即波(bo)(bo)長的(de)(de)(de)(de)關(guan)系很(hen)大(da)。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang) 對(dui)(dui)于(yu)(yu)波(bo)(bo)長短、不(bu)易繞(rao)射(she)的(de)(de)(de)(de)高(gao)(gao)(gao)(gao)頻(pin)波(bo)(bo)的(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)蔽作用(yong)(yong)十(shi)分(fen)顯(xian)(xian)著，可(ke)(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)在(zai)(zai)(zai)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)后(hou)面形(xing)(xing)成(cheng)(cheng)很(hen)長的(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)；而(er)(er)對(dui)(dui)于(yu)(yu)波(bo)(bo)長、具有(you)很(hen)強繞(rao)射(she)能力(li)的(de)(de)(de)(de)低(di)(di)頻(pin)波(bo)(bo)的(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)蔽作用(yong)(yong)則(ze)十(shi)分(fen)有(you)限(xian)。當(dang)然，也可(ke)(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)通過加(jia)(jia)高(gao)(gao)(gao)(gao)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)辦法來(lai)削弱(ruo)繞(rao)射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)對(dui)(dui)受聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)(dian)(dian)的(de)(de)(de)(de)影(ying)響(xiang)。由(you)于(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)對(dui)(dui)高(gao)(gao)(gao)(gao)頻(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)產生明(ming)顯(xian)(xian)有(you)效(xiao)的(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)蔽作用(yong)(yong)，而(er)(er)冷(leng)卻(que)塔(ta)落(luo)水噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)頻(pin)譜以(yi)(yi)(yi)(yi)(yi)(yi)中(zhong)高(gao)(gao)(gao)(gao)頻(pin)成(cheng)(cheng)分(fen)為(wei)(wei)(wei)主(zhu)，所以(yi)(yi)(yi)(yi)(yi)(yi)采用(yong)(yong)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)可(ke)(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)取得(de)一(yi)定的(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)以(yi)(yi)(yi)(yi)(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)中(zhong)緊挨屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)局(ju)部(bu)區(qu)(qu)(qu)域為(wei)(wei)(wei)最好，最高(gao)(gao)(gao)(gao)可(ke)(ke)(ke)達(da) 25 db 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)區(qu)(qu)(qu)以(yi)(yi)(yi)(yi)(yi)(yi)外(wai)的(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級則(ze)由(you)于(yu)(yu)中(zhong)頻(pin)繞(rao)射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)的(de)(de)(de)(de)到達(da)而(er)(er)有(you)所反彈，但(dan)對(dui)(dui)于(yu)(yu)高(gao)(gao)(gao)(gao)頻(pin)波(bo)(bo)而(er)(er)言，衰減量(liang)(liang)一(yi)般(ban)還可(ke)(ke)(ke)達(da)到 10－ 15db 然而(er)(er)由(you)于(yu)(yu)冷(leng)卻(que)塔(ta)落(luo)水噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)中(zhong)尚(shang)含有(you)中(zhong)頻(pin)成(cheng)(cheng)分(fen)，所以(yi)(yi)(yi)(yi)(yi)(yi)其降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)會(hui)有(you)折扣。對(dui)(dui)于(yu)(yu)建筑外(wai)受聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)(dian)(dian)來(lai)說，為(wei)(wei)(wei)取得(de)滿(man)意的(de)(de)(de)(de)降(jiang)噪(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)，在(zai)(zai)(zai)不(bu)影(ying)響(xiang)進(jin)風(feng)(feng)的(de)(de)(de)(de)前(qian)提下(xia)(xia)，尚(shang)應通過加(jia)(jia)大(da)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)高(gao)(gao)(gao)(gao)度(du)調(diao)節之(zhi)。 安裝隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)時(shi)主(zhu)要(yao)注意的(de)(de)(de)(de)是隔(ge)(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)離冷(leng)卻(que)塔(ta)百葉進(jin)風(feng)(feng) 口(kou)的(de)(de)(de)(de)距離在(zai)(zai)(zai)1m左右以(yi)(yi)(yi)(yi)(yi)(yi)保冷(leng)卻(que)塔(ta)換氣進(jin)風(feng)(feng)口(kou)不(bu)受阻，從而(er)(er)使冷(leng)卻(que)塔(ta)冷(leng)卻(que)效(xiao)果(guo)更(geng)好 。 為(wei)(wei)(wei)防止噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)繞(rao)射(she)而(er)(er)影(ying)響(xiang)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流(liu)片(pian)的(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學(xue)效(xiao)果(guo)，可(ke)(ke)(ke)以(yi)(yi)(yi)(yi)(yi)(yi)在(zai)(zai)(zai)消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流(liu)片(pian)附近(jin)安裝一(yi)定長度(du)的(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)(zhang)，起到輔助降(jiang)噪(zao)(zao)(zao)(zao)(zao)作用(yong)(yong)。 落(luo)水消(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)法及特點(dian)(dian)(dian) ：即在(zai)(zai)(zai)冷(leng)卻(que)塔(ta)底部(bu)水面以(yi)(yi)(yi)(yi)(yi)(yi)上(shang)安裝落(luo)水消(xiao)能 降(jiang)噪(zao)(zao)(zao)(zao)(zao)材料，從源(yuan)頭(tou)著手降(jiang)低(di)(di)噪(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)。 降(jiang)噪(zao)(zao)(zao)(zao)(zao) 效(xiao)果(guo)一(yi)般(ban)在(zai)(zai)(zai)6— 10dBA；初次投(tou)(tou)資(zi)較(jiao)(jiao)少(shao)，對(dui)(dui)通風(feng)(feng)散(san)熱(re)沒有(you)影(ying)響(xiang)；缺(que)點(dian)(dian)(dian)是降(jiang)噪(zao)(zao)(zao)(zao)(zao)量(liang)(liang)較(jiao)(jiao)少(shao)，部(bu)件易損(sun)壞(huai)，維護(hu)工作量(liang)(liang)大(da)， 需要(yao)持續(xu)投(tou)(tou)入(ru)，并還可(ke)(ke)(ke)能引起凝(ning)汽器(qi)管子堵塞的(de)(de)(de)(de)問(wen)題。 "落(luo)水消(xiao)能降(jiang)噪(zao)(zao)(zao)(zao)(zao)器(qi)" 以(yi)(yi)(yi)(yi)(yi)(yi)六角蜂窩斜 管為(wei)(wei)(wei)主(zhu)體形(xing)(xing)式(shi)(shi)，層高(gao)(gao)(gao)(gao) 18 cm，由(you)豎向導(dao)入(ru)段(duan)、無(wu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)擦貼(tie)斜段(duan)、粘(zhan)滯(zhi)減速斜段(duan)、疏散(san)灑落(luo)挑流(liu)段(duan)等(deng)四(si)個功能段(duan)組成(cheng)(cheng)。