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層(ceng)高(gao)(gao)過高(gao)(gao)如(ru)何(he)(he)提(ti)高(gao)(gao)制(zhi)冷效(xiao)果(guo),解決方(fang)案:較(jiao)之(zhi)(zhi)于(yu)常規層(ceng)高(gao)(gao)的(de)(de)(de)(de)房(fang)(fang)屋(wu)(一般(ban)為(wei)2.6-2.7米左右)。別(bie)(bie)墅的(de)(de)(de)(de)層(ceng)高(gao)(gao)一般(ban)都為(wei)3米甚至以上(shang)的(de)(de)(de)(de)高(gao)(gao)度。此前提(ti)下中(zhong)央空調(diao)制(zhi)冷和(he)采暖的(de)(de)(de)(de)配比(bi)較(jiao)之(zhi)(zhi)于(yu)一般(ban)層(ceng)高(gao)(gao)的(de)(de)(de)(de)房(fang)(fang)屋(wu)會(hui)更高(gao)(gao)。如(ru)一般(ban)平(ping)(ping)層(ceng)的(de)(de)(de)(de)配比(bi)為(wei)200w/平(ping)(ping)方(fang)。別(bie)(bie)墅為(wei)230-280w/平(ping)(ping)方(fang)。空調(diao)外機需要如(ru)何(he)(he)擺放較(jiao)為(wei)合理,解決方(fang)案:別(bie)(bie)墅由于(yu)面積(ji)(ji)較(jiao)大,較(jiao)之(zhi)(zhi)于(yu)平(ping)(ping)層(ceng)一般(ban)外機的(de)(de)(de)(de)功率較(jiao)大。體積(ji)(ji)也就較(jiao)之(zhi)(zhi)平(ping)(ping)層(ceng)會(hui)更大。一般(ban)的(de)(de)(de)(de)擺放位置位于(yu)本身(shen)建筑(zhu)的(de)(de)(de)(de)自留機位或(huo)者(zhe)位于(yu)門口或(huo)者(zhe)陽(yang)臺(tai)花園的(de)(de)(de)(de)平(ping)(ping)臺(tai)之(zhi)(zhi)上(shang)。鋪設可供(gong)平(ping)(ping)衡的(de)(de)(de)(de)水泥臺(tai)面即(ji)可。
1) 送(song)(song)(song)風(feng)(feng)(feng)(feng),包括通氣,如(ru)送(song)(song)(song)鮮風(feng)(feng)(feng)(feng)和排氣,這(zhe)個范圍很廣,如(ru)工(gong)廠(chang)車間(jian),生產(chan)(chan)(chan)(chan)場地空(kong)氣,由于有(you)害氣體產(chan)(chan)(chan)(chan)生需(xu)要排出(chu)室外,又需(xu)要把(ba)室外空(kong)氣輸(shu)送(song)(song)(song)至(zhi)室內。這(zhe)時就(jiu)(jiu)要使(shi)(shi)用(yong)流(liu)量(liang)大而壓力小的(de)(de)(de)空(kong)氣輸(shu)送(song)(song)(song)管(guan)(guan)(guan)道(dao)(dao),螺旋(xuan)(xuan)(xuan)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)就(jiu)(jiu)適用(yong),一般情況(kuang)下使(shi)(shi)用(yong)鍍鋅鐵(tie)管(guan)(guan)(guan),有(you)腐蝕性及特別潮(chao)濕場所使(shi)(shi)用(yong)不銹鋼管(guan)(guan)(guan)。2) 送(song)(song)(song)冷風(feng)(feng)(feng)(feng)。常見的(de)(de)(de)是中央(yang)空(kong)調的(de)(de)(de)管(guan)(guan)(guan)道(dao)(dao),這(zhe)種(zhong)管(guan)(guan)(guan)道(dao)(dao)需(xu)要加保溫材料(liao)。螺旋(xuan)(xuan)(xuan)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)可(ke)內貼保溫材料(liao),外表看來美(mei)觀。3) 排油煙(yan)。飯(fan)店、酒樓、賓館(guan)的(de)(de)(de)廚房均有(you)大量(liang)油煙(yan)產(chan)(chan)(chan)(chan)生,需(xu)要排出(chu),使(shi)(shi)用(yong)圓形的(de)(de)(de)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)就(jiu)(jiu)是油煙(yan)囪。在這(zhe)里,螺旋(xuan)(xuan)(xuan)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)該叫做油煙(yan)管(guan)(guan)(guan)。4) 除塵。有(you)些工(gong)廠(chang)生產(chan)(chan)(chan)(chan)車間(jian)很多塵埃,需(xu)要專門的(de)(de)(de)除塵裝置,其(qi)中量(liang)較大的(de)(de)(de)管(guan)(guan)(guan)道(dao)(dao),可(ke)使(shi)(shi)用(yong)螺旋(xuan)(xuan)(xuan)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)。5) 散裝物料(liao)輸(shu)送(song)(song)(song)。有(you)些工(gong)廠(chang)的(de)(de)(de)生產(chan)(chan)(chan)(chan)過程中,需(xu)要輸(shu)送(song)(song)(song)松散的(de)(de)(de)顆(ke)粒(li),特別是比重不大的(de)(de)(de)如(ru)發泡塑料(liao)粒(li)之類的(de)(de)(de)使(shi)(shi)用(yong)螺旋(xuan)(xuan)(xuan)風(feng)(feng)(feng)(feng)管(guan)(guan)(guan)造價低、效果好(hao)。
1、70℃防(fang)(fang)火(huo)(huo)閥(fa)(fa)用(yong)在(zai)(zai)空調送風、通風系統管(guan)道(dao)上(shang);平時(shi)(shi)(shi)常(chang)開(kai),發(fa)生(sheng)火(huo)(huo)災時(shi)(shi)(shi)關閉(bi),聯鎖(suo)風機,使風機關閉(bi);2、280℃防(fang)(fang)火(huo)(huo)閥(fa)(fa)用(yong)在(zai)(zai)排(pai)(pai)煙(yan)系統管(guan)道(dao)上(shang),平時(shi)(shi)(shi)常(chang)開(kai),發(fa)生(sheng)火(huo)(huo)災時(shi)(shi)(shi)排(pai)(pai)煙(yan),當(dang)(dang)煙(yan)氣(qi)溫(wen)(wen)度(du)達到(dao)280度(du)時(shi)(shi)(shi),防(fang)(fang)火(huo)(huo)閥(fa)(fa)關閉(bi),聯鎖(suo)風機關閉(bi);3、280℃防(fang)(fang)火(huo)(huo)閥(fa)(fa)應為常(chang)開(kai),又叫高(gao)(gao)溫(wen)(wen)防(fang)(fang)火(huo)(huo)閥(fa)(fa),一(yi)般安(an)(an)裝在(zai)(zai)有高(gao)(gao)溫(wen)(wen)環境的通風管(guan)道(dao)中,當(dang)(dang)溫(wen)(wen)度(du)到(dao)達280℃后易熔合金熔化(hua),閥(fa)(fa)門關閉(bi),同時(shi)(shi)(shi)可以用(yong)24V電信號控(kong)制。如(ru)果(guo)說是280排(pai)(pai)煙(yan)防(fang)(fang)火(huo)(huo)閥(fa)(fa)應為常(chang)閉(bi),安(an)(an)裝在(zai)(zai)排(pai)(pai)煙(yan)管(guan)道(dao)中發(fa)生(sheng)火(huo)(huo)災時(shi)(shi)(shi)控(kong)制中心給(gei)出電信號使其(qi)打開(kai)排(pai)(pai)煙(yan),當(dang)(dang)溫(wen)(wen)度(du)到(dao)達280時(shi)(shi)(shi)易熔合金熔化(hua)閥(fa)(fa)門關閉(bi),是一(yi)種二次動作的閥(fa)(fa)門。
鑒于軸(zhou)(zhou)(zhou)流(liu)風(feng)(feng)(feng)機有紊(wen)(wen)流(liu)區的(de)(de)(de)性能(neng)特點(dian),在選型和使(shi)(shi)用(yong)時,需(xu)要(yao)注意以下兩(liang)點(dian):建議使(shi)(shi)用(yong)在空曠(kuang)(kuang)環(huan)境(jing)中(zhong),軸(zhou)(zhou)(zhou)流(liu)風(feng)(feng)(feng)機的(de)(de)(de)輸入功率(lv)(lv)隨系(xi)統(tong)靜(jing)(jing)壓的(de)(de)(de)增(zeng)(zeng)大而增(zeng)(zeng)大,而在紊(wen)(wen)流(liu)區,輸入功率(lv)(lv)的(de)(de)(de)增(zeng)(zeng)大幅(fu)度會(hui)更(geng)大。因此(ci),軸(zhou)(zhou)(zhou)流(liu)風(feng)(feng)(feng)機一般多應(ying)用(yong)在有較大空曠(kuang)(kuang)環(huan)境(jing)的(de)(de)(de)場合下,可以使(shi)(shi)其工作(zuo)在靜(jing)(jing)壓較低(di)的(de)(de)(de)環(huan)境(jing)下,降(jiang)低(di)功耗,保證(zheng)穩定性和壽命。定期(qi)清理(li)風(feng)(feng)(feng)道(dao)(dao),當(dang)軸(zhou)(zhou)(zhou)流(liu)風(feng)(feng)(feng)機應(ying)用(yong)在較為封閉的(de)(de)(de)風(feng)(feng)(feng)道(dao)(dao)系(xi)統(tong)中(zhong)時,長期(qi)運(yun)行后風(feng)(feng)(feng)道(dao)(dao)中(zhong)的(de)(de)(de)積灰、垃圾逐漸(jian)變多,會(hui)使(shi)(shi)風(feng)(feng)(feng)道(dao)(dao)內的(de)(de)(de)靜(jing)(jing)壓逐漸(jian)增(zeng)(zeng)加,使(shi)(shi)得風(feng)(feng)(feng)機的(de)(de)(de)運(yun)行工況點(dian)逐漸(jian)左移。這不僅會(hui)降(jiang)低(di)風(feng)(feng)(feng)機性能(neng),更(geng)重要(yao)的(de)(de)(de)是會(hui)增(zeng)(zeng)加軸(zhou)(zhou)(zhou)流(liu)風(feng)(feng)(feng)機進入紊(wen)(wen)流(liu)區的(de)(de)(de)風(feng)(feng)(feng)險。因此(ci)必須(xu)要(yao)定期(qi)清理(li)風(feng)(feng)(feng)道(dao)(dao),保證(zheng)風(feng)(feng)(feng)機工況點(dian)不產生較大偏移。
防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)的(de)(de)外(wai)觀(guan),防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)應(ying)外(wai)觀(guan)完好無(wu)損,機械(xie)部(bu)分(fen)(fen)外(wai)表無(wu)銹蝕、變形或機械(xie)損傷。在(zai)(zai)其明(ming)顯(xian)部(bu)位(wei)(wei)(wei)設置(zhi)(zhi)永久性標牌,標明(ming)產(chan)(chan)品名(ming)(ming)稱(cheng)、型號、規格、耐火(huo)性能及商標、生產(chan)(chan)單位(wei)(wei)(wei)(制造商)名(ming)(ming)稱(cheng)和(he)廠(chang)址、出日期及產(chan)(chan)品生產(chan)(chan)批號、執行標準(zhun)等,內容清(qing)晰,設置(zhi)(zhi)牢靠。防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)的(de)(de)安(an)裝位(wei)(wei)(wei)置(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)主要安(an)裝在(zai)(zai)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)靠近防(fang)(fang)(fang)(fang)火(huo)分(fen)(fen)隔(ge)處(chu)(chu),暗裝時,安(an)裝部(bu)位(wei)(wei)(wei)應(ying)設置(zhi)(zhi)方便維護的(de)(de)檢(jian)修口。具(ju)體檢(jian)查要求(qiu)為:(1)通風(feng)(feng)、空(kong)調(diao)系統(tong)的(de)(de)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan),在(zai)(zai)以下部(bu)位(wei)(wei)(wei)應(ying)設置(zhi)(zhi)公稱(cheng)動作溫度為70℃的(de)(de)防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa):①穿(chuan)越(yue)防(fang)(fang)(fang)(fang)火(huo)分(fen)(fen)區(qu)處(chu)(chu);②穿(chuan)越(yue)通風(feng)(feng)、空(kong)調(diao)機房(fang)的(de)(de)房(fang)間(jian)隔(ge)墻(qiang)和(he)樓板(ban)(ban)處(chu)(chu);③穿(chuan)越(yue)重要或火(huo)災危險(xian)性大的(de)(de)房(fang)間(jian)隔(ge)墻(qiang)和(he)樓板(ban)(ban)處(chu)(chu);④穿(chuan)越(yue)防(fang)(fang)(fang)(fang)火(huo)分(fen)(fen)隔(ge)處(chu)(chu)的(de)(de)變形縫(feng)兩側;⑤豎向風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)與每(mei)層水(shui)平(ping)(ping)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)交(jiao)接(jie)(jie)處(chu)(chu)的(de)(de)水(shui)平(ping)(ping)管(guan)(guan)(guan)(guan)(guan)(guan)段(duan)上。當(dang)建(jian)筑(zhu)內每(mei)個防(fang)(fang)(fang)(fang)火(huo)分(fen)(fen)區(qu)的(de)(de)通風(feng)(feng)、空(kong)調(diao)系統(tong)均(jun)獨立設置(zhi)(zhi)時,水(shui)平(ping)(ping)風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)與豎向總管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)交(jiao)接(jie)(jie)處(chu)(chu)可(ke)不(bu)設置(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)。(2)公共建(jian)筑(zhu)的(de)(de)浴室(shi)、衛(wei)生間(jian)和(he)廚(chu)房(fang)的(de)(de)豎向排風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan),應(ying)采取防(fang)(fang)(fang)(fang)止回流措施,并宜(yi)(yi)在(zai)(zai)支管(guan)(guan)(guan)(guan)(guan)(guan)上設置(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)。(3)公共建(jian)筑(zhu)內廚(chu)房(fang)的(de)(de)排油煙管(guan)(guan)(guan)(guan)(guan)(guan)道,宜(yi)(yi)按防(fang)(fang)(fang)(fang)火(huo)分(fen)(fen)區(qu)設置(zhi)(zhi),且在(zai)(zai)與豎向排風(feng)(feng)管(guan)(guan)(guan)(guan)(guan)(guan)連接(jie)(jie)的(de)(de)支管(guan)(guan)(guan)(guan)(guan)(guan)處(chu)(chu)應(ying)設置(zhi)(zhi)防(fang)(fang)(fang)(fang)火(huo)閥(fa)(fa)(fa)。
風機分類可以按氣體流動的方向,分為離心式、軸流式、斜流式和橫流式等類型。這種風機分類的機器有:離心風機工作時,動力機(主要是電動機)驅動葉輪在蝸形機殼內旋轉,空氣經吸氣口從葉輪中心處吸入。由于通風設備葉片對氣體的動力作用,氣體壓力和速度得以提高,并在離心力作用下沿著葉道甩向機殼,值得信賴的通風設備從排氣(qi)(qi)口排出。因氣(qi)(qi)體在(zai)葉(xie)輪(lun)內的流動(dong)(dong)主要是(shi)在(zai)徑向平面內,故又稱徑流風(feng)機(ji)(ji)。離心風(feng)機(ji)(ji)主要由葉(xie)輪(lun)和機(ji)(ji)殼組成,小型(xing)風(feng)機(ji)(ji)的葉(xie)輪(lun)直接裝在(zai)電動(dong)(dong)機(ji)(ji)上中、大型(xing)風(feng)機(ji)(ji)通(tong)過聯軸器或皮帶輪(lun)與電動(dong)(dong)機(ji)(ji)聯接。離心風(feng)機(ji)(ji)一般為單側進(jin)氣(qi)(qi),用單級(ji)葉(xie)輪(lun);流量(liang)大的可雙(shuang)側進(jin)氣(qi)(qi),用兩個背靠(kao)背的葉(xie)輪(lun),又稱為雙(shuang)吸式離心風(feng)機(ji)(ji)。