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鑒于軸(zhou)流(liu)風(feng)(feng)機(ji)有(you)紊流(liu)區的(de)性(xing)(xing)能(neng)特點,在選型(xing)和使(shi)用(yong)時(shi),需要(yao)注意(yi)以下兩點:建議(yi)使(shi)用(yong)在空曠環(huan)境(jing)中,軸(zhou)流(liu)風(feng)(feng)機(ji)的(de)輸入(ru)功率隨(sui)系(xi)統靜(jing)壓的(de)增(zeng)大(da)(da)(da)而增(zeng)大(da)(da)(da),而在紊流(liu)區,輸入(ru)功率的(de)增(zeng)大(da)(da)(da)幅度會更大(da)(da)(da)。因此(ci),軸(zhou)流(liu)風(feng)(feng)機(ji)一般多(duo)(duo)應用(yong)在有(you)較(jiao)大(da)(da)(da)空曠環(huan)境(jing)的(de)場合下,可以使(shi)其工(gong)作在靜(jing)壓較(jiao)低(di)的(de)環(huan)境(jing)下,降(jiang)低(di)功耗,保證穩定(ding)性(xing)(xing)和壽命(ming)。定(ding)期(qi)清理風(feng)(feng)道(dao)(dao),當軸(zhou)流(liu)風(feng)(feng)機(ji)應用(yong)在較(jiao)為封(feng)閉的(de)風(feng)(feng)道(dao)(dao)系(xi)統中時(shi),長期(qi)運行(xing)后(hou)風(feng)(feng)道(dao)(dao)中的(de)積灰、垃圾(ji)逐漸變多(duo)(duo),會使(shi)風(feng)(feng)道(dao)(dao)內的(de)靜(jing)壓逐漸增(zeng)加,使(shi)得風(feng)(feng)機(ji)的(de)運行(xing)工(gong)況(kuang)點逐漸左(zuo)移。這(zhe)不僅會降(jiang)低(di)風(feng)(feng)機(ji)性(xing)(xing)能(neng),更重要(yao)的(de)是會增(zeng)加軸(zhou)流(liu)風(feng)(feng)機(ji)進(jin)入(ru)紊流(liu)區的(de)風(feng)(feng)險。因此(ci)必(bi)須要(yao)定(ding)期(qi)清理風(feng)(feng)道(dao)(dao),保證風(feng)(feng)機(ji)工(gong)況(kuang)點不產生較(jiao)大(da)(da)(da)偏移。
什么是風管,常見風管有哪些類型,風管主要指中央空調系統的通風管道,它常常被忽視,但天園地方管卻是空調系統的重要組成部分。風管是由薄鋼板、鋁板、硬聚氯乙烯板、玻璃鋼以及其它復合材料等制成的,高品質天園地方管用于輸送(song)空氣(qi)和空氣(qi)混合物的(de)各種管(guan)(guan)道的(de)總稱。1、按照材(cai)質可分(fen)(fen)為(wei)(wei):金屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)、非金屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)。其(qi)中:(1)金屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)又(you)可分(fen)(fen)為(wei)(wei):鋼(gang)板風(feng)(feng)(feng)(feng)管(guan)(guan)、鋁板風(feng)(feng)(feng)(feng)管(guan)(guan)、不銹鋼(gang)風(feng)(feng)(feng)(feng)管(guan)(guan)等(deng);(2)非金屬(shu)風(feng)(feng)(feng)(feng)管(guan)(guan)可以分(fen)(fen)為(wei)(wei):硬聚氯乙烯風(feng)(feng)(feng)(feng)管(guan)(guan)、有(you)機玻璃(li)風(feng)(feng)(feng)(feng)管(guan)(guan)、無機玻璃(li)風(feng)(feng)(feng)(feng)管(guan)(guan)、玻璃(li)鋼(gang)風(feng)(feng)(feng)(feng)管(guan)(guan)以及其(qi)它復合材(cai)料風(feng)(feng)(feng)(feng)管(guan)(guan)等(deng);2、按照風(feng)(feng)(feng)(feng)管(guan)(guan)外形(xing)可分(fen)(fen)為(wei)(wei):圓形(xing)風(feng)(feng)(feng)(feng)管(guan)(guan)、矩(ju)形(xing)風(feng)(feng)(feng)(feng)管(guan)(guan);3、按照通(tong)風(feng)(feng)(feng)(feng)空調系統(tong)工(gong)作壓力(li)可分(fen)(fen)為(wei)(wei):高壓風(feng)(feng)(feng)(feng)管(guan)(guan)、中壓風(feng)(feng)(feng)(feng)管(guan)(guan)、低壓風(feng)(feng)(feng)(feng)管(guan)(guan)三個類別,
風(feng)(feng)(feng)(feng)機(ji)廣泛地應用(yong)(yong)(yong)于各個工業部門(men),一(yi)般講,離(li)心(xin)式(shi)(shi)風(feng)(feng)(feng)(feng)機(ji)適(shi)用(yong)(yong)(yong)于小流(liu)量(liang)(liang)、高壓(ya)力的場所,而(er)軸(zhou)流(liu)式(shi)(shi)風(feng)(feng)(feng)(feng)機(ji)則常用(yong)(yong)(yong)于大流(liu)量(liang)(liang)、低壓(ya)力的情況,應根據不(bu)同的情況選有不(bu)同的風(feng)(feng)(feng)(feng)機(ji)分類。1鍋(guo)(guo)(guo)(guo)爐(lu)用(yong)(yong)(yong)風(feng)(feng)(feng)(feng)機(ji),鍋(guo)(guo)(guo)(guo)爐(lu)用(yong)(yong)(yong)風(feng)(feng)(feng)(feng)機(ji)根據鍋(guo)(guo)(guo)(guo)爐(lu)的規格可(ke)選用(yong)(yong)(yong)離(li)心(xin)式(shi)(shi)或軸(zhou)流(liu)式(shi)(shi)。又按它的作用(yong)(yong)(yong)分為鍋(guo)(guo)(guo)(guo)爐(lu)風(feng)(feng)(feng)(feng)機(ji)—向(xiang)鍋(guo)(guo)(guo)(guo)爐(lu)內輸送(song)空(kong)氣(qi);鍋(guo)(guo)(guo)(guo)爐(lu)引風(feng)(feng)(feng)(feng)機(ji)把鍋(guo)(guo)(guo)(guo)爐(lu)內的煙氣(qi)抽走。2通風(feng)(feng)(feng)(feng)換(huan)氣(qi)用(yong)(yong)(yong)風(feng)(feng)(feng)(feng)機(ji),這類風(feng)(feng)(feng)(feng)機(ji)一(yi)般是供工廠及各種(zhong)建筑物通風(feng)(feng)(feng)(feng)換(huan)氣(qi)及采暖通風(feng)(feng)(feng)(feng)用(yong)(yong)(yong),要(yao)求(qiu)壓(ya)力不(bu)高,但噪聲要(yao)求(qiu)要(yao)低,可(ke)采用(yong)(yong)(yong)離(li)心(xin)式(shi)(shi)或軸(zhou)流(liu)式(shi)(shi)風(feng)(feng)(feng)(feng)機(ji)。
雖(sui)然在(zai)商(shang)業建(jian)(jian)筑與(yu)多(duo)種居住(zhu)(zhu)房的(de)(de)(de)被動(dong)消(xiao)防(fang)中(zhong)(zhong),防(fang)火(huo)(huo)(huo)閥(fa)是(shi)關鍵組件,但在(zai)對建(jian)(jian)筑和其(qi)居住(zhu)(zhu)者的(de)(de)(de)安全保護(hu)中(zhong)(zhong),很多(duo)管(guan)理者沒(mei)有意識到防(fang)火(huo)(huo)(huo)閥(fa)的(de)(de)(de)作用以及規定時間間隔內(nei),防(fang)火(huo)(huo)(huo)閥(fa)的(de)(de)(de)檢測、清潔及維護(hu)的(de)(de)(de)重要(yao)意義。在(zai)商(shang)業建(jian)(jian)筑中(zhong)(zhong)的(de)(de)(de)建(jian)(jian)造中(zhong)(zhong)我們(men)總會(hui)遇到一(yi)些(xie)麻(ma)煩,試圖在(zai)能源(yuan)效率與(yu)室內(nei)空氣(qi)質量(liang)之間尋求平(ping)衡(heng)就(jiu)是(shi)其(qi)中(zhong)(zhong)。大多(duo)商(shang)業建(jian)(jian)筑通(tong)(tong)(tong)過機械通(tong)(tong)(tong)風或空調系統(tong)解決,能夠測量(liang)和控(kong)制整個建(jian)(jian)筑的(de)(de)(de)空氣(qi)變化。在(zai)通(tong)(tong)(tong)風管(guan)道系統(tong)的(de)(de)(de)安裝上就(jiu)存在(zai)上面(mian)(mian)提到的(de)(de)(de)問題———如何(he)在(zai)延遲或阻(zu)止火(huo)(huo)(huo)災蔓延的(de)(de)(de)建(jian)(jian)筑防(fang)火(huo)(huo)(huo)分隔與(yu)所允許空氣(qi)自由流通(tong)(tong)(tong)的(de)(de)(de)需要(yao)之間達到平(ping)衡(heng)。滿(man)足空氣(qi)自由流通(tong)(tong)(tong)需要(yao)不可避(bi)免地再(zai)引入(ru)一(yi)條通(tong)(tong)(tong)道,而這(zhe)卻加快了火(huo)(huo)(huo)勢的(de)(de)(de)蔓延———利用通(tong)(tong)(tong)風管(guan)道系統(tong)使用的(de)(de)(de)通(tong)(tong)(tong)道。毫無疑問,這(zhe)中(zhong)(zhong)斷了防(fang)火(huo)(huo)(huo)分隔,充(chong)當了建(jian)(jian)筑被動(dong)消(xiao)防(fang)護(hu)面(mian)(mian)的(de)(de)(de)“裂口”。
1、在設(she)計靜(jing)(jing)(jing)壓箱時,如果(guo)(guo)按著規(gui)定的(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)速(su)(su)(su)成(cheng)進行設(she)計,箱體(ti)將會很(hen)大(da);一(yi)般的(de)(de)(de)(de)(de)(de)靜(jing)(jing)(jing)壓箱長邊要(yao)(yao)(yao)寬(kuan)出(chu)風(feng)(feng)(feng)管邊400mm,高(gao)(gao)度(du)(du)(du)要(yao)(yao)(yao)寬(kuan)出(chu)風(feng)(feng)(feng)管高(gao)(gao)度(du)(du)(du)400mm ;2、選靜(jing)(jing)(jing)壓箱的(de)(de)(de)(de)(de)(de)經驗是5~10db(a)/m,阻抗復合型(似乎空(kong)調通風(feng)(feng)(feng)系(xi)統一(yi)般都用這(zhe)個(ge))消(xiao)聲器10~15db(a)/m;3、控制(zhi)風(feng)(feng)(feng)速(su)(su)(su) 在2.5以(yi)內 若體(ti)積(ji)太大(da)可適當(dang)得(de)(de)提(ti)高(gao)(gao)一(yi)下風(feng)(feng)(feng)速(su)(su)(su) 關于長度(du)(du)(du)一(yi)般大(da)于1米(mi)沒有其他得(de)(de)強制(zhi)要(yao)(yao)(yao)求(qiu) ;4、高(gao)(gao)度(du)(du)(du)×深(shen)度(du)(du)(du)=靜(jing)(jing)(jing)壓箱截(jie)(jie)面(mian)面(mian)積(ji),靜(jing)(jing)(jing)壓箱截(jie)(jie)面(mian)面(mian)積(ji)×2.5m/s=風(feng)(feng)(feng)機(ji)(ji)風(feng)(feng)(feng)量,至于高(gao)(gao)度(du)(du)(du)和深(shen)度(du)(du)(du)怎么配,自己把(ba)握吧(ba);5、用你(ni)機(ji)(ji)組的(de)(de)(de)(de)(de)(de)風(feng)(feng)(feng)量L÷3米(mi)/秒,可得(de)(de)到你(ni)靜(jing)(jing)(jing)壓箱一(yi)個(ge)面(mian)的(de)(de)(de)(de)(de)(de)面(mian)積(ji),然后你(ni)根據你(ni)房子的(de)(de)(de)(de)(de)(de)高(gao)(gao)度(du)(du)(du),假(jia)如是4米(mi),可你(ni)的(de)(de)(de)(de)(de)(de)機(ji)(ji)組是2米(mi)高(gao)(gao),在減(jian)去軟接頭大(da)概0.5米(mi),上面(mian)留高(gao)(gao)0.5米(mi),那(nei)你(ni)的(de)(de)(de)(de)(de)(de)靜(jing)(jing)(jing)壓箱只有1米(mi)高(gao)(gao),那(nei)你(ni)就(jiu)(jiu)可以(yi)確定寬(kuan)度(du)(du)(du)了,有了兩個(ge)數(shu),第三個(ge)數(shu)也就(jiu)(jiu)容易確定了,這(zhe)里(li)主要(yao)(yao)(yao)的(de)(de)(de)(de)(de)(de)是要(yao)(yao)(yao)看(kan)自己的(de)(de)(de)(de)(de)(de)空(kong)調機(ji)(ji)房夠(gou)不(bu)夠(gou)位置,如果(guo)(guo)夠(gou)位置就(jiu)(jiu)盡量的(de)(de)(de)(de)(de)(de)大(da)點!!長度(du)(du)(du)的(de)(de)(de)(de)(de)(de)計算(suan)方(fang)法(fa)也是一(yi)樣的(de)(de)(de)(de)(de)(de),你(ni)知道了寬(kuan)度(du)(du)(du),那(nei)么你(ni)的(de)(de)(de)(de)(de)(de)寬(kuan)度(du)(du)(du)乘(cheng)以(yi)長度(du)(du)(du)不(bu)也是有個(ge)面(mian)積(ji)嗎?這(zhe)個(ge)面(mian)積(ji)也要(yao)(yao)(yao)等(deng)于L/3,不(bu)過(guo)在設(she)計院里(li)的(de)(de)(de)(de)(de)(de)面(mian)風(feng)(feng)(feng)速(su)(su)(su)是取用2m/s的(de)(de)(de)(de)(de)(de),如果(guo)(guo)夠(gou)空(kong)間,就(jiu)(jiu)做大(da)點吧(ba);