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)保證所有噪聲(sheng)(sheng)(sheng)(sheng)敏(min)感點都在聲(sheng)(sheng)(sheng)(sheng)屏障的(de)聲(sheng)(sheng)(sheng)(sheng)影區內，從(cong)而獲得最佳的(de)降噪效(xiao)(xiao)果，根(gen)據現場情況和(he)聲(sheng)(sheng)(sheng)(sheng)學計(ji)算確定(ding)聲(sheng)(sheng)(sheng)(sheng)屏障有效(xiao)(xiao)高度為(wei)(wei)3m，聲(sheng)(sheng)(sheng)(sheng)屏障采用(yong)寬(kuan)頻(pin)(pin)帶組(zu)合吸聲(sheng)(sheng)(sheng)(sheng)結構(gou)和(he)阻(zu)尼隔聲(sheng)(sheng)(sheng)(sheng)板的(de)組(zu)合式(shi)(shi)結構(gou)其(qi)中 寬(kuan)頻(pin)(pin)帶組(zu)合式(shi)(shi)吸聲(sheng)(sheng)(sheng)(sheng)結構(gou)的(de)吸聲(sheng)(sheng)(sheng)(sheng)特(te)性曲線。 消(xiao)聲(sheng)(sheng)(sheng)(sheng)器選(xuan)擇(ze)現有的(de)阻(zu)性消(xiao)聲(sheng)(sheng)(sheng)(sheng)器包括直(zhi)管式(shi)(shi)、復合式(shi)(shi)、片式(shi)(shi)、盤式(shi)(shi)和(he)折板式(shi)(shi)等幾(ji)種方式(shi)(shi)，其(qi)中片式(shi)(shi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)器具(ju)有消(xiao)聲(sheng)(sheng)(sheng)(sheng)量大，阻(zu)力較小，導流效(xiao)(xiao)果和(he)安(an)裝靈 活的(de)特(te)點，因此選(xuan)擇(ze)在風(feng)機出口處安(an)裝片式(shi)(shi)消(xiao)聲(sheng)(sheng)(sheng)(sheng)器，同時考慮到噪聲(sheng)(sheng)(sheng)(sheng)特(te)點在設(she)計(ji)時特(te)別選(xuan)用(yong)了(le)寬(kuan)頻(pin)(pin)吸聲(sheng)(sheng)(sheng)(sheng)材(cai)料

冷卻塔噪音生產原因

人類對(dui)改(gai)善(shan)生活(huo)環境(jing)要求的日益增長和水(shui)資源的日趨緊張，是一對(dui)發展中的矛盾，冷(leng)卻(que) 塔(ta)實現了(le)(le)冷(leng)卻(que)水(shui)循環利用，大大減少了(le)(le)熱交換系統對(dui)冷(leng)卻(que)水(shui)的消耗。因此，冷(leng)卻(que)塔(ta)在工業和民用建筑等領域得到了(le)(le)廣泛(fan)應(ying)用，幵丏為節水(shui)事業作出了(le)(le)重大貢獻(xian)，但是它又產生噪聲，對(dui)環境(jing)造成噪音污(wu)染。這一問(wen)題(ti)已被國(guo)家和社會充分關(guan)注。

噪音污染是一種嚴重(zhong)的(de)(de)(de)環境問(wen)題，這(zhe)是因為(wei)民(min)用(yong)冷卻塔(ta)一般(ban)都(dou)安裝在居(ju)民(min)區，所以用(yong)戶 及其(qi)周圍居(ju)民(min)都(dou)對冷卻塔(ta)的(de)(de)(de)噪聲(sheng)指標提出了噪聲(sheng)限(xian)值要(yao)求，為(wei)此各地環保局對冷卻塔(ta)產(chan)品的(de)(de)(de)生產(chan)和使用(yong)做出了嚴格的(de)(de)(de)限(xian)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(jian)、夜(ye)間(jian)的時間(jian)由當地(di)人民(min)政(zheng)府按當地(di)習(xi)慣(guan)和季(ji)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)(jiang)噪(zao)防凍(dong)裝置專用(yong)吸(xi)(xi)音(yin)(yin)降(jiang)(jiang)噪(zao)板(ban)，包括支(zhi)(zhi)撐(cheng)架、小(xiao)圓弧(hu)導(dao)風(feng)頭、多孔(kong)板(ban)、防水無紡布、吸(xi)(xi)音(yin)(yin)棉，多孔(kong)板(ban)包覆在(zai)(zai)支(zhi)(zhi)撐(cheng)架的(de)(de)左右(you)側面(mian)(mian)和尾(wei)部端面(mian)(mian)上，在(zai)(zai)支(zhi)(zhi)撐(cheng)架內填充(chong)吸(xi)(xi)音(yin)(yin)棉，吸(xi)(xi)音(yin)(yin)降(jiang)(jiang)噪(zao)板(ban)的(de)(de)截面(mian)(mian)形狀(zhuang)為"子彈"形，由(you)于(yu)吸(xi)(xi)音(yin)(yin)降(jiang)(jiang)噪(zao)板(ban)的(de)(de)外端由(you)小(xiao)圓弧(hu)導(dao)風(feng)頭與梯形吸(xi)(xi)音(yin)(yin)段(duan)對接而成，在(zai)(zai)相(xiang)同間(jian)距條(tiao)件下，增大了兩(liang)相(xiang)鄰吸(xi)(xi)音(yin)(yin)降(jiang)(jiang)噪(zao)板(ban)之(zhi)間(jian)進風(feng)口截面(mian)(mian)，更(geng)利于(yu)進風(feng)導(dao)入，提高了進風(feng)的(de)(de)導(dao)入風(feng)速；由(you)于(yu)將(jiang)尾(wei)部端面(mian)(mian)設計成吸(xi)(xi)音(yin)(yin)結構(gou)，增大了吸(xi)(xi)音(yin)(yin)降(jiang)(jiang)噪(zao)板(ban)的(de)(de)有(you)效(xiao)(xiao)(xiao)吸(xi)(xi)音(yin)(yin)面(mian)(mian)積，提高了吸(xi)(xi)音(yin)(yin)降(jiang)(jiang)噪(zao)效(xiao)(xiao)(xiao)果，經試驗，在(zai)(zai)同等試驗條(tiao)件下，降(jiang)(jiang)噪(zao)效(xiao)(xiao)(xiao)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)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)一(yi)般(ban)設計(ji)為(wei)(wei)距冷卻(que)(que)塔進(jin)(jin)(jin)風(feng)(feng)口(kou)的(de)(de)(de)(de)(de)(de)距離(li)大(da)(da)(da)于(yu)(yu)冷卻(que)(que)塔進(jin)(jin)(jin)風(feng)(feng)口(kou)高度(du)(du)，屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)高度(du)(du)等于(yu)(yu)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)到(dao)(dao)進(jin)(jin)(jin)風(feng)(feng)口(kou)的(de)(de)(de)(de)(de)(de)距離(li)。降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(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)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)量(liang)(liang)可(ke)(ke)2OdB(A)左右，但(dan)存在(zai)(zai)(zai)著(zhu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)繞(rao)射(she)問題，在(zai)(zai)(zai) 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)(ying)區(qu)(qu)(qu)(qu)范(fan)圍內(nei)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)量(liang)(liang)較(jiao)好(hao)，繞(rao)射(she)區(qu)(qu)(qu)(qu)和聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)亮區(qu)(qu)(qu)(qu)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)較(jiao)差，因此實際工程上(shang)很(hen)難將其(qi)影(ying)(ying)響(xiang)區(qu)(qu)(qu)(qu)內(nei)噪(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)低(di)20dB(A)；對(dui)(dui)(dui)(dui)通(tong)(tong)風(feng)(feng)影(ying)(ying)響(xiang)不大(da)(da)(da)，維護(hu)(hu)比較(jiao)簡單；建(jian)設聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)技術要求(qiu)不高，但(dan)對(dui)(dui)(dui)(dui)結構要求(qiu)相當高，并且投(tou)資(zi)成(cheng)(cheng)(cheng)本(ben)隨著(zhu)高度(du)(du)的(de)(de)(de)(de)(de)(de)增(zeng)加成(cheng)(cheng)(cheng)倍增(zeng)加；隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)法及(ji)特(te)點(dian)：隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)結構可(ke)(ke)分(fen)(fen)為(wei)(wei)地上(shang)和地下(xia)二部(bu)(bu)分(fen)(fen)，地上(shang)部(bu)(bu)分(fen)(fen)為(wei)(wei)厚(hou)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)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)(de)(de)(de)(de)巨型、連續板式(shi)立面（包(bao)括斜撐），其(qi)頂(ding)部(bu)(bu)為(wei)(wei)扇形吸聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)體(ti)(ti)或內(nei)傾式(shi)遮檐；地下(xia)部(bu)(bu)分(fen)(fen)則為(wei)(wei)承(cheng)重、抗傾覆（風(feng)(feng)荷載）的(de)(de)(de)(de)(de)(de)基礎。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)遇到(dao)(dao)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)發生的(de)(de)(de)(de)(de)(de)繞(rao)射(she)現(xian)象會減弱聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)作(zuo)用，而(er)(er)繞(rao)射(she)能(neng)(neng)力與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)(de)(de)(de)(de)頻(pin)(pin)(pin)(pin)率有(you)(you)關(guan)，所以(yi)(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)與聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)(de)(de)(de)(de)頻(pin)(pin)(pin)(pin)率即波(bo)長(chang)的(de)(de)(de)(de)(de)(de)關(guan)系很(hen)大(da)(da)(da)。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang) 對(dui)(dui)(dui)(dui)于(yu)(yu)波(bo)長(chang)短、不易繞(rao)射(she)的(de)(de)(de)(de)(de)(de)高頻(pin)(pin)(pin)(pin)波(bo)的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽作(zuo)用十(shi)分(fen)(fen)顯著(zhu)，可(ke)(ke)以(yi)(yi)(yi)在(zai)(zai)(zai)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)后面形成(cheng)(cheng)(cheng)很(hen)長(chang)的(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)(ying)區(qu)(qu)(qu)(qu)；而(er)(er)對(dui)(dui)(dui)(dui)于(yu)(yu)波(bo)長(chang)、具有(you)(you)很(hen)強繞(rao)射(she)能(neng)(neng)力的(de)(de)(de)(de)(de)(de)低(di)頻(pin)(pin)(pin)(pin)波(bo)的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽作(zuo)用則十(shi)分(fen)(fen)有(you)(you)限。當然，也可(ke)(ke)以(yi)(yi)(yi)通(tong)(tong)過加高屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)辦法來削弱繞(rao)射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)對(dui)(dui)(dui)(dui)受(shou)(shou)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)的(de)(de)(de)(de)(de)(de)影(ying)(ying)響(xiang)。由于(yu)(yu)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)對(dui)(dui)(dui)(dui)高頻(pin)(pin)(pin)(pin)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)產生明顯有(you)(you)效(xiao)的(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)蔽作(zuo)用，而(er)(er)冷卻(que)(que)塔落水噪(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)頻(pin)(pin)(pin)(pin)譜以(yi)(yi)(yi)中(zhong)(zhong)高頻(pin)(pin)(pin)(pin)成(cheng)(cheng)(cheng)分(fen)(fen)為(wei)(wei)主，所以(yi)(yi)(yi)采用聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)可(ke)(ke)以(yi)(yi)(yi)取(qu)(qu)得(de)一(yi)定的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)。 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)以(yi)(yi)(yi)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)(ying)區(qu)(qu)(qu)(qu)中(zhong)(zhong)緊(jin)挨屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)的(de)(de)(de)(de)(de)(de)局(ju)部(bu)(bu)區(qu)(qu)(qu)(qu)域(yu)為(wei)(wei)最好(hao)，最高可(ke)(ke)達(da) 25 db 聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)影(ying)(ying)區(qu)(qu)(qu)(qu)以(yi)(yi)(yi)外的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)則由于(yu)(yu)中(zhong)(zhong)頻(pin)(pin)(pin)(pin)繞(rao)射(she)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)的(de)(de)(de)(de)(de)(de)到(dao)(dao)達(da)而(er)(er)有(you)(you)所反彈，但(dan)對(dui)(dui)(dui)(dui)于(yu)(yu)高頻(pin)(pin)(pin)(pin)波(bo)而(er)(er)言(yan)，衰減量(liang)(liang)一(yi)般(ban)還可(ke)(ke)達(da)到(dao)(dao) 10－ 15db 然而(er)(er)由于(yu)(yu)冷卻(que)(que)塔落水噪(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)中(zhong)(zhong)尚含有(you)(you)中(zhong)(zhong)頻(pin)(pin)(pin)(pin)成(cheng)(cheng)(cheng)分(fen)(fen)，所以(yi)(yi)(yi)其(qi)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)會有(you)(you)折扣。對(dui)(dui)(dui)(dui)于(yu)(yu)建(jian)筑外受(shou)(shou)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)點(dian)來說，為(wei)(wei)取(qu)(qu)得(de)滿意的(de)(de)(de)(de)(de)(de)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)效(xiao)果(guo)，在(zai)(zai)(zai)不影(ying)(ying)響(xiang)進(jin)(jin)(jin)風(feng)(feng)的(de)(de)(de)(de)(de)(de)前提下(xia)，尚應通(tong)(tong)過加大(da)(da)(da)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)高度(du)(du)調(diao)節之。 安(an)裝(zhuang)隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)時(shi)主要注意的(de)(de)(de)(de)(de)(de)是(shi)隔(ge)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)離(li)冷卻(que)(que)塔百葉進(jin)(jin)(jin)風(feng)(feng) 口(kou)的(de)(de)(de)(de)(de)(de)距離(li)在(zai)(zai)(zai)1m左右以(yi)(yi)(yi)保冷卻(que)(que)塔換氣(qi)進(jin)(jin)(jin)風(feng)(feng)口(kou)不受(shou)(shou)阻(zu)，從(cong)而(er)(er)使冷卻(que)(que)塔冷卻(que)(que)效(xiao)果(guo)更(geng)好(hao) 。 為(wei)(wei)防止(zhi)噪(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)繞(rao)射(she)而(er)(er)影(ying)(ying)響(xiang)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流(liu)片(pian)的(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)學效(xiao)果(guo)，可(ke)(ke)以(yi)(yi)(yi)在(zai)(zai)(zai)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)導(dao)流(liu)片(pian)附近安(an)裝(zhuang)一(yi)定長(chang)度(du)(du)的(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)屏(ping)(ping)(ping)(ping)(ping)(ping)(ping)障(zhang)(zhang)(zhang)(zhang)，起到(dao)(dao)輔助(zhu)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)作(zuo)用。 落水消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)法及(ji)特(te)點(dian) ：即在(zai)(zai)(zai)冷卻(que)(que)塔底部(bu)(bu)水面以(yi)(yi)(yi)上(shang)安(an)裝(zhuang)落水消(xiao)(xiao)能(neng)(neng) 降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)材料，從(cong)源頭著(zhu)手降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)低(di)噪(zao)(zao)(zao)(zao)(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)源。 降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao) 效(xiao)果(guo)一(yi)般(ban)在(zai)(zai)(zai)6— 10dBA；初次投(tou)資(zi)較(jiao)少(shao)，對(dui)(dui)(dui)(dui)通(tong)(tong)風(feng)(feng)散熱沒有(you)(you)影(ying)(ying)響(xiang)；缺點(dian)是(shi)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)量(liang)(liang)較(jiao)少(shao)，部(bu)(bu)件(jian)易損壞，維護(hu)(hu)工作(zuo)量(liang)(liang)大(da)(da)(da)， 需要持續投(tou)入(ru)，并還可(ke)(ke)能(neng)(neng)引起凝(ning)汽器管子堵塞的(de)(de)(de)(de)(de)(de)問題。 "落水消(xiao)(xiao)能(neng)(neng)降(jiang)(jiang)(jiang)(jiang)(jiang)(jiang)噪(zao)(zao)(zao)(zao)(zao)(zao)器" 以(yi)(yi)(yi)六角蜂窩斜 管為(wei)(wei)主體(ti)(ti)形式(shi)，層高 18 cm，由豎向(xiang)導(dao)入(ru)段(duan)、無聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)擦(ca)貼(tie)斜段(duan)、粘(zhan)滯(zhi)減速斜段(duan)、疏散灑落挑流(liu)段(duan)等四個功能(neng)(neng)段(duan)組(zu)成(cheng)(cheng)(cheng)。