【溫濕(shi)(shi)度調(diao)節(jie)(jie)(jie)】室內溫度和濕(shi)(shi)度怎么調(diao)節(jie)(jie)(jie) 室內空氣溫濕(shi)(shi)度調(diao)節(jie)(jie)(jie)方法
一、引言
室內空(kong)氣(qi)品(pin)質(zhi)作為概念(nian)提出并進(jin)行研(yan)究已(yi)經有(you)一個多世紀的歷史,人(ren)們已(yi)經從(cong)傳統的溫(wen)度(du)要(yao)求發展到空(kong)調(diao)專(zhuan)業指標(biao)(溫(wen)度(du)、濕(shi)度(du)、室內空(kong)氣(qi)流速和紊流強度(du)、室內感(gan)知溫(wen)差、溫(wen)度(du)輻射(she)不對稱性等) 和大氣(qi)環境指標(biao)(污(wu)染(ran)物氣(qi)體、總懸浮(fu)微粒(TSP)、飄塵、輻射(she)性物質(zhi)等) 的綜合性要(yao)求。作為舒適性空(kong)調(diao)工程專(zhuan)業來講其主要(yao)關(guan)注的還(huan)是人(ren)們最容易感(gan)知和最直接的感(gan)受:溫(wen)濕(shi)度(du)指標(biao)。
二、傳統的溫濕度控制
傳(chuan)統(tong)的溫(wen)(wen)濕(shi)度(du)(du)(du)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)都(dou)是(shi)采(cai)用溫(wen)(wen)濕(shi)度(du)(du)(du)耦合(he)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)的方式,這(zhe)種方式依靠表(biao)冷(leng)器提供(gong)冷(leng)源(yuan)使表(biao)冷(leng)器與空(kong)(kong)氣(qi)(qi)間形成(cheng)溫(wen)(wen)差驅動(dong)顯(xian)然傳(chuan)熱(re),從(cong)而降(jiang)(jiang)低(di)濕(shi)空(kong)(kong)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du),同時(shi)濕(shi)空(kong)(kong)氣(qi)(qi)因(yin)溫(wen)(wen)度(du)(du)(du)降(jiang)(jiang)低(di)使干(gan)空(kong)(kong)氣(qi)(qi)分壓(ya)力(li)(li)下降(jiang)(jiang),而此時(shi)濕(shi)空(kong)(kong)氣(qi)(qi)中(zhong)的水(shui)蒸氣(qi)(qi)分壓(ya)力(li)(li)卻保持不變,當(dang)濕(shi)空(kong)(kong)氣(qi)(qi)的溫(wen)(wen)度(du)(du)(du)降(jiang)(jiang)低(di)到(dao)水(shui)蒸氣(qi)(qi)的分壓(ya)力(li)(li)所(suo)對應(ying)的飽(bao)和溫(wen)(wen)度(du)(du)(du)時(shi),水(shui)蒸氣(qi)(qi)達(da)到(dao)飽(bao)和狀態,如果濕(shi)空(kong)(kong)氣(qi)(qi)的溫(wen)(wen)度(du)(du)(du)進一(yi)(yi)步降(jiang)(jiang)低(di),那么濕(shi)空(kong)(kong)氣(qi)(qi)就會(hui)析出水(shui)滴,從(cong)而實現(xian)除(chu)濕(shi)的目的,這(zhe)種控(kong)(kong)(kong)制(zhi)(zhi)(zhi)方式將溫(wen)(wen)度(du)(du)(du)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)和濕(shi)度(du)(du)(du)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)捆(kun)綁在(zai)一(yi)(yi)起由一(yi)(yi)個系統(tong)來承擔(dan)兩種負荷的控(kong)(kong)(kong)制(zhi)(zhi)(zhi)任務,體現(xian)在(zai)工(gong)程上就是(shi)當(dang)任何(he)一(yi)(yi)個參數達(da)不到(dao)要求就要啟動(dong)整個系統(tong)造成(cheng)能量的損(sun)耗。而溫(wen)(wen)濕(shi)度(du)(du)(du)獨(du)立控(kong)(kong)(kong)制(zhi)(zhi)(zhi)既(ji)省力(li)(li)又快捷(jie)。下面介紹溫(wen)(wen)濕(shi)度(du)(du)(du)獨(du)立控(kong)(kong)(kong)制(zhi)(zhi)(zhi)的各種方法。
三、空氣溫度控制
3.1 供暖
目前,房屋供暖方式大多分為兩種:集中供暖和分戶供暖。其中,分戶供暖:根據設備和熱源的不同,又分為鍋爐供暖,地板輻射供暖,電熱膜采暖等。
3.1.1 集中供暖
這種采暖方式通常是通過小區燃煤鍋爐和地下管網集中向各個小區樓房供暖,如果是地暖,還(huan)需(xu)在(zai)各個(ge)房(fang)間(jian)(jian)的地(di)(di)(di)面下(xia)鋪(pu)設蛇形盤管 3.1.2分戶(hu)壁(bi)掛燃氣鍋爐(lu)供暖(nuan)(nuan)(nuan)(水(shui)地(di)(di)(di)暖(nuan)(nuan)(nuan))這種(zhong)采暖(nuan)(nuan)(nuan)方式(shi)通常是在(zai)用戶(hu)自家的廚房(fang)或陽臺上(shang)安裝(zhuang)壁(bi)掛爐(lu),由(you)壁(bi)掛爐(lu)燃燒天然氣將(jiang)水(shui)燒熱輸送到各個(ge)房(fang)間(jian)(jian)的地(di)(di)(di)下(xia)盤管中,再通過盤管向地(di)(di)(di)板及室內空(kong)間(jian)(jian)輻射供暖(nuan)(nuan)(nuan)。
3.1.3電熱電纜地暖(電地暖)
這種(zhong)采暖(nuan)方式(shi)與水地(di)(di)暖(nuan)的(de)構(gou)造(zao)基本相同(tong),不(bu)同(tong)的(de)是(shi)用(yong)電來(lai)加(jia)熱地(di)(di)下管道的(de)。優點(dian)是(shi),不(bu)受集中(zhong)(zhong)供暖(nuan)熱網的(de)限(xian)制(zhi),供停自(zi)由;每個房間(jian)溫度能在一(yi)定范(fan)圍(wei)內隨意調節;暖(nuan)氣(qi)由下而上,腳暖(nuan)頭涼(liang),符合中(zhong)(zhong)醫健康理論;美觀大方,不(bu)占用(yong)室內空間(jian)。不(bu)足之處有:
1、地下電纜不能(neng)隨意裁(cai)切,一旦裁(cai)切會(hui)破壞導(dao)熱功能(neng),因此安裝時有可能(neng)會(hui)在房間留下“冷區(qu)”。
2、有一定的有害電磁輻射,一些(xie)電地暖廠家不(bu)得(de)不(bu)采取措(cuo)施屏蔽(bi)有害電磁輻。
3.1.4尚蘭格“暖芯地板”采暖方式
這是一(yi)種有“暖芯”的地板。外(wai)觀上與地板無異,只(zhi)是植(zhi)入地板上表層(ceng)的“暖芯層(ceng)+遠(yuan)紅(hong)外(wai)層(ceng)”使(shi)地板具有了“地板裝飾、采暖、保健(jian)”三合一(yi)的功能。目(mu)前越來(lai)越多的新建小(xiao)區開始采用這種采暖方式。
3.2 室內降溫
室內降溫方(fang)法很多,而且各有優(you)劣,找到適(shi)合自己(ji)的,才(cai)是最好(hao)的降溫方(fang)式(shi)。
3.2.1 空調
優點是(shi)降溫快(kuai),效果(guo)好,一般可以達到最舒適(shi)室溫;但是(shi)一次(ci)性(xing)投入費用高(gao)。
3.2.2 換氣扇
換氣扇(shan)東西(xi)(xi)向的(de)房(fang)子通風比較(jiao)(jiao)差(cha),安換氣扇(shan)可加強室內空氣流動,如(ru)果可以,最好東、西(xi)(xi)兩邊窗各安一個(ge)換氣扇(shan),一個(ge)向里吹,一個(ge)向外吹。優點是降(jiang)溫較(jiao)(jiao)好,投入低,不占住房(fang)面積;但是調節室溫作用有限,最多接(jie)近(jin)室外溫度。
3.2.3 植物
西向窗外栽上植(zhi)物(wu),最好是牽牛(niu)花(hua)、爬(pa)墻(qiang)虎這(zhe)類可以牽藤又有較大葉(xie)子的,讓(rang)它順窗戶護欄攀(pan)爬(pa),如無(wu)窗護欄,可考慮(lv)在(zai)窗上下部(bu)外墻(qiang)面(mian)釘(ding)(ding)釘(ding)(ding)子,拉上鐵絲或線作植(zhi)物(wu)攀(pan)爬(pa)用,待(dai)植(zhi)物(wu)基本長(chang)滿(man)整面(mian)窗戶,能起很(hen)(hen)(hen)好的遮陽效(xiao)果(guo),又很(hen)(hen)(hen)美觀(西向窗子氣溫(wen)高(gao),給植(zhi)物(wu)澆水(shui)(shui)一(yi)般干得很(hen)(hen)(hen)快,可用礦泉水(shui)(shui)瓶(ping)(ping)在(zai)底部(bu)鑿(zao)個小洞(dong),裝(zhuang)上水(shui)(shui)直立放入花(hua)盆,用瓶(ping)(ping)蓋(gai)松緊調(diao)節水(shui)(shui)量,以利(li)保(bao)持水(shui)(shui)份)。此法有較好降溫(wen)效(xiao)果(guo),經濟實惠又美觀;但是植(zhi)物(wu)需要(yao)養(yang)護,愛(ai)(ai)養(yang)花(hua)的人很(hen)(hen)(hen)歡喜,不愛(ai)(ai)養(yang)花(hua)或沒時間(jian)養(yang)花(hua)的人很(hen)(hen)(hen)痛苦(ku)。
3.2.4 窗簾
外(wai)出時(shi)把窗(chuang)簾(lian)拉上,回家時(shi)再打(da)開(窗(chuang)和(he)窗(chuang)簾(lian)之間還(huan)可(ke)加一(yi)層遮光簾(lian),效果會更好)。這(zhe)是(shi)最省錢省心的(de)降(jiang)溫方法(fa),但(dan)是(shi)盡管能明顯(xian)感受到(dao)氣溫比平時(shi)低(di),但(dan)室內(nei)還(huan)是(shi)很熱。
3.2.5 冷色調
家居飾物盡(jin)量用冷色調,從(cong)視覺(jue)上可(ke)以給人一定的(de)涼(liang)快(kuai)錯覺(jue)。
3.2.6 反光膜
在(zai)西向窗戶外貼反(fan)光膜(mo),可以(yi)起一(yi)定降溫(wen)作用。缺點就(jiu)(jiu)是本來通風就(jiu)(jiu)不(bu)好,還得關著窗,一(yi)開(kai)窗反(fan)光膜(mo)的作用就(jiu)(jiu)降低(di)了。
四、空氣濕度調節
空氣濕度調節方法一般有以下幾種
4.1 空氣除濕
4.1.1升溫除濕和通風除濕
對室(shi)內(nei)(nei)(nei)空(kong)氣(qi)加熱升(sheng)(sheng)溫(wen),空(kong)氣(qi)的相對濕(shi)(shi)(shi)(shi)度(du)(du)隨著(zhu)空(kong)氣(qi)溫(wen)度(du)(du)升(sheng)(sheng)高而(er)降(jiang)低,含(han)濕(shi)(shi)(shi)(shi)量不(bu)(bu)變(bian)。若室(shi)內(nei)(nei)(nei)不(bu)(bu)斷產生濕(shi)(shi)(shi)(shi)量,用升(sheng)(sheng)溫(wen)方法仍然不(bu)(bu)能(neng)(neng)減低相對濕(shi)(shi)(shi)(shi)度(du)(du),再加上單(dan)純加熱而(er)不(bu)(bu)通(tong)風(feng)(feng)會使室(shi)內(nei)(nei)(nei)空(kong)氣(qi)清(qing)新度(du)(du)下降(jiang),所以,單(dan)一(yi)的升(sheng)(sheng)溫(wen)既不(bu)(bu)能(neng)(neng)真正除濕(shi)(shi)(shi)(shi),又(you)不(bu)(bu)能(neng)(neng)通(tong)風(feng)(feng)換氣(qi),空(kong)氣(qi)質量差,此法一(yi)般不(bu)(bu)宜(yi)單(dan)獨采用。室(shi)外空(kong)氣(qi)的含(han)濕(shi)(shi)(shi)(shi)量在不(bu)(bu)同季(ji)節和同一(yi)天(tian)的不(bu)(bu)同時刻也是不(bu)(bu)同的,綜合分(fen)析(xi)當地(di)氣(qi)候資源特點,部分(fen)地(di)區(qu)條件允許時可(ke)用通(tong)風(feng)(feng)方法將室(shi)外相對濕(shi)(shi)(shi)(shi)度(du)(du)較(jiao)低的空(kong)氣(qi)送入室(shi)內(nei)(nei)(nei),將室(shi)內(nei)(nei)(nei)相對濕(shi)(shi)(shi)(shi)度(du)(du)較(jiao)高的空(kong)氣(qi)置換出去(qu),即通(tong)風(feng)(feng)除濕(shi)(shi)(shi)(shi)。
4.1.2蒸氣壓縮式除濕機/冷凍除濕機
蒸(zheng)(zheng)(zheng)氣(qi)(qi)(qi)(qi)壓(ya)縮式除濕(shi)機又(you)稱冷凍(dong)除濕(shi)機,即利用制(zhi)冷系統中(zhong)蒸(zheng)(zheng)(zheng)發器表面(mian)溫度較低(一般可以低于被處理(li)空(kong)氣(qi)(qi)(qi)(qi)的(de)露(lu)點(dian)溫度),使(shi)得空(kong)氣(qi)(qi)(qi)(qi)中(zhong)的(de)水蒸(zheng)(zheng)(zheng)氣(qi)(qi)(qi)(qi)凝結在(zai)蒸(zheng)(zheng)(zheng)發器表面(mian),以減(jian)小空(kong)氣(qi)(qi)(qi)(qi)中(zhong)的(de)含濕(shi)量。這就是為什么我們在(zai)夏季家用空(kong)調(diao)運行時(shi),室內機一側會有冷凝水需(xu)要排(pai)除的(de)原因。
4.1.3利用固體和液體吸濕劑的干燥去濕裝置
固體(ti)吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)分兩類,吸(xi)(xi)(xi)(xi)附式除(chu)濕(shi)劑(ji)(ji)和(he)吸(xi)(xi)(xi)(xi)收式除(chu)濕(shi)劑(ji)(ji),吸(xi)(xi)(xi)(xi)附式除(chu)濕(shi)劑(ji)(ji)處理濕(shi)空(kong)(kong)(kong)(kong)氣(qi)時,不(bu)改(gai)變自身(shen)的(de)(de)物(wu)理或(huo)(huo)(huo)化(hua)學(xue)結構,如(ru)硅膠(jiao)、活性(xing)鋁、鋁膠(jiao)或(huo)(huo)(huo)分子篩;吸(xi)(xi)(xi)(xi)收式吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)在吸(xi)(xi)(xi)(xi)濕(shi)過程(cheng)中會(hui)改(gai)變自身(shen)的(de)(de)物(wu)理或(huo)(huo)(huo)化(hua)學(xue)結構,如(ru)氯化(hua)鈣或(huo)(huo)(huo)氯化(hua)鋰(li)(li)等鹽(yan)類。液(ye)(ye)體(ti)吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)為濃(nong)縮的(de)(de)鹽(yan)溶液(ye)(ye),如(ru)三甘醇(chun)、氯化(hua)鋰(li)(li)、溴化(hua)鋰(li)(li)、氯化(hua)鈣等水溶液(ye)(ye),并具有與使(shi)用(yong)要(yao)求相適應(ying)的(de)(de)蒸(zheng)汽壓力特性(xing)。通過調(diao)節液(ye)(ye)體(ti)吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)的(de)(de)溫(wen)度和(he)濃(nong)度,可(ke)以實現多種空(kong)(kong)(kong)(kong)氣(qi)處理過程(cheng),將空(kong)(kong)(kong)(kong)氣(qi)處理到所(suo)(suo)需的(de)(de)狀態,可(ke)避免冷凍去濕(shi)過程(cheng)中先將空(kong)(kong)(kong)(kong)氣(qi)冷卻到機器(qi)露點而后再(zai)加熱的(de)(de)冷熱抵消現象。液(ye)(ye)體(ti)吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)處理空(kong)(kong)(kong)(kong)氣(qi)時還(huan)具有消除(chu)空(kong)(kong)(kong)(kong)氣(qi)中氣(qi)態污(wu)染物(wu)(如(ru)大量(liang)(liang)的(de)(de)揮發性(xing)有機化(hua)合物(wu),即vOCs)和(he)微生(sheng)(sheng)物(wu)的(de)(de)作用(yong),有助于(yu)改(gai)善室內空(kong)(kong)(kong)(kong)氣(qi)質量(liang)(liang)。采用(yong)固體(ti)或(huo)(huo)(huo)液(ye)(ye)體(ti)吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)的(de)(de)空(kong)(kong)(kong)(kong)調(diao)系(xi)統(tong)(tong),必須要(yao)有相應(ying)的(de)(de)吸(xi)(xi)(xi)(xi)濕(shi)劑(ji)(ji)再(zai)生(sheng)(sheng)設備,所(suo)(suo)以系(xi)統(tong)(tong)復雜,設備占地面積大,維(wei)護要(yao)求較高(gao),目前主要(yao)用(yong)于(yu)對濕(shi)度要(yao)求較高(gao)的(de)(de)生(sheng)(sheng)產過程(cheng)或(huo)(huo)(huo)大、中型的(de)(de)商業建筑,以及有特殊用(yong)途的(de)(de)房(fang)問。
4.1.4被動除濕
利用多(duo)(duo)孔(kong)建筑裝飾(shi)材料(liao)的(de)(de)(de)(de)吸(xi)濕(shi)和蓄濕(shi)特性吸(xi)收室(shi)內(nei)空(kong)氣中多(duo)(duo)余的(de)(de)(de)(de)水汽,起到(dao)調節室(shi)內(nei)空(kong)氣濕(shi)度(du)(du)的(de)(de)(de)(de)作用,稱為被(bei)動除(chu)濕(shi)。與傳(chuan)(chuan)熱(re)過程類似,外圍護結(jie)構(gou)的(de)(de)(de)(de)濕(shi)傳(chuan)(chuan)遞也包括三(san)個(ge)階段(duan):高濕(shi)空(kong)氣側(ce)的(de)(de)(de)(de)吸(xi)濕(shi)、建筑材料(liao)內(nei)濕(shi)遷(qian)(qian)移(濕(shi)滲透)和低濕(shi)空(kong)氣側(ce)的(de)(de)(de)(de)釋(shi)濕(shi)過程。若把傳(chuan)(chuan)熱(re)理(li)解為熱(re)的(de)(de)(de)(de)濃度(du)(du)(焓)擴散,則(ze)濕(shi)(質(zhi))遷(qian)(qian)移可理(li)解為濕(shi)的(de)(de)(de)(de)濃度(du)(du)擴散。被(bei)動除(chu)濕(shi)可采用的(de)(de)(de)(de)建筑裝飾(shi)材料(liao)如石(shi)膏(gao)板(ban)(ban),其中以(yi)紙(zhi)面石(shi)膏(gao)板(ban)(ban)為代(dai)表。紙(zhi)面石(shi)膏(gao)板(ban)(ban)是以(yi)建筑石(shi)膏(gao)為主(zhu)要原料(liao)摻人適量的(de)(de)(de)(de)添加劑如填(tian)充料(liao)、發泡劑、緩(huan)凝劑等(deng)以(yi)及纖維做成(cheng)板(ban)(ban)芯,以(yi)特殊(shu)的(de)(de)(de)(de)板(ban)(ban)紙(zhi)為護面而(er)制成(cheng)。一(yi)般未經處理(li)的(de)(de)(de)(de)紙(zhi)面石(shi)膏(gao)l~2小(xiao)時(shi)的(de)(de)(de)(de)吸(xi)水率大于30%,72小(xiao)時(shi)為40%左右。根據清華大學金招芬等(deng)理(li)論計(ji)算(suan)結(jie)果,在(zai)上海地(di)區若采用調濕(shi)板(ban)(ban),室(shi)內(nei)相(xiang)對(dui)濕(shi)度(du)(du)除(chu)十個(ge)工作日(ri)的(de)(de)(de)(de)小(xiao)時(shi)數(約230小(xiao)時(shi))超過80%以(yi)外,全(quan)年工作日(ri)內(nei)室(shi)內(nei)相(xiang)對(dui)濕(shi)度(du)(du)可保持(chi)在(zai)35%~80%內(nei)范(fan)圍。
4.1.5干式除濕
干式(shi)除(chu)(chu)濕(shi)(shi)(shi)機的(de)(de)原理(li)是濕(shi)(shi)(shi)空氣(qi)通過含吸(xi)濕(shi)(shi)(shi)劑(ji)的(de)(de)纖維紙的(de)(de)蜂(feng)窩狀體(如轉輪(lun)除(chu)(chu)濕(shi)(shi)(shi)機),在水蒸(zheng)汽分(fen)壓力差(cha)的(de)(de)作用下(xia),水分(fen)被(bei)吸(xi)濕(shi)(shi)(shi)劑(ji)吸(xi)收或吸(xi)附(fu)。轉輪(lun)除(chu)(chu)濕(shi)(shi)(shi)機的(de)(de)發展較快,其(qi)除(chu)(chu)濕(shi)(shi)(shi)能力較強,其(qi)除(chu)(chu)濕(shi)(shi)(shi)效果比冷(leng)凍(dong)除(chu)(chu)濕(shi)(shi)(shi)好,主要應用于潮濕(shi)(shi)(shi)氣(qi)候環(huan)境下(xia)濕(shi)(shi)(shi)負荷較大且有低濕(shi)(shi)(shi)要求(qiu)的(de)(de)房間。與冷(leng)凍(dong)除(chu)(chu)濕(shi)(shi)(shi)相比,被(bei)處理(li)空氣(qi)不(bu)必冷(leng)卻(que)至露點溫度(du)以下(xia),避(bi)免(mian)了制冷(leng)劑(ji)蒸(zheng)發溫度(du)過低影響(xiang)冷(leng)效率,又(you)可避(bi)免(mian)凝(ning)結(jie)水排放不(bu)當造成的(de)(de)滲漏問(wen)題。
4.2空氣加濕
對(dui)空氣的加濕,可以(yi)采(cai)用直接噴蒸(zheng)汽或采(cai)用噴淋室(shi)噴水來進(jin)行。也有用電加濕器來實現。
4.2.1水蒸氣加濕
用(yong)(yong)水蒸氣加濕(shi)(shi)空氣,可以(yi)增(zeng)加空氣的(de)(de)含濕(shi)(shi)量,加濕(shi)(shi)用(yong)(yong)的(de)(de)蒸氣可以(yi)兼(jian)用(yong)(yong)鍋爐產生的(de)(de)低壓蒸氣,也可由電加濕(shi)(shi)器(qi)產生的(de)(de)蒸氣。后者容易控制(zhi),在(zai)要求較(jiao)高(gao)的(de)(de)空調系統中得到廣(guang)泛使用(yong)(yong)。
4.2.2 電加濕器加濕
電(dian)(dian)(dian)加(jia)濕(shi)器(qi)主要有電(dian)(dian)(dian)熱(re)式(shi)和(he)電(dian)(dian)(dian)極(ji)(ji)式(shi)兩(liang)種。電(dian)(dian)(dian)熱(re)式(shi)加(jia)濕(shi)器(qi)是電(dian)(dian)(dian)流(liu)(liu)通(tong)(tong)過(guo)放在(zai)水(shui)容(rong)器(qi)中的電(dian)(dian)(dian)阻(zu)絲(si)(電(dian)(dian)(dian)阻(zu)絲(si)用(yong)絕緣密封處理),將水(shui)加(jia)熱(re)至沸騰而(er)產(chan)生蒸(zheng)氣(qi)。電(dian)(dian)(dian)極(ji)(ji)式(shi)加(jia)濕(shi)器(qi)是利用(yong)三(san)根銅(tong)棒或不(bu)銹鋼棒插入盛水(shui)的容(rong)器(qi)中做電(dian)(dian)(dian)極(ji)(ji)。將電(dian)(dian)(dian)極(ji)(ji)與三(san)相電(dian)(dian)(dian)源接通(tong)(tong)之后,就(jiu)有電(dian)(dian)(dian)流(liu)(liu)從水(shui)中通(tong)(tong)過(guo)。在(zai)這里水(shui)是電(dian)(dian)(dian)阻(zu),因而(er)能被(bei)加(jia)熱(re)蒸(zheng)發成蒸(zheng)氣(qi)。顯然(ran),水(shui)位越高,導電(dian)(dian)(dian)面積越大,通(tong)(tong)過(guo)電(dian)(dian)(dian)流(liu)(liu)也(ye)越強,因而(er)發熱(re)量也(ye)越大。所以(yi)(yi),產(chan)生蒸(zheng)氣(qi)量的多(duo)少可以(yi)(yi)用(yong)水(shui)位來控制。而(er)水(shui)位的高低可以(yi)(yi)用(yong)改變(bian)溢流(liu)(liu)管高度(du)的方法來調節。電(dian)(dian)(dian)極(ji)(ji)式(shi)加(jia)濕(shi)器(qi)結構緊湊,而(er)且加(jia)濕(shi)量容(rong)易(yi)控制,使用(yong)較多(duo)。但它耗電(dian)(dian)(dian)量較大,電(dian)(dian)(dian)極(ji)(ji)上易(yi)積水(shui)垢和(he)腐蝕。因此(ci),宜用(yong)在(zai)小(xiao)型(xing)空調系統上。
五、結論
以(yi)上介紹了各種空(kong)氣溫濕度(du)(du)調節(jie)的(de)(de)方法。在我看來,室內(nei)(nei)溫濕度(du)(du)獨立控制(zhi)(zhi)比(bi)較節(jie)能可(ke)行。在實際中(zhong),宜將(jiang)上述的(de)(de)幾種空(kong)氣處理(li)方法根據需要進行有機的(de)(de)組合,再加上合理(li)的(de)(de)控制(zhi)(zhi),就可(ke)以(yi)對室內(nei)(nei)的(de)(de)溫濕度(du)(du)環境進行有效的(de)(de)控制(zhi)(zhi)和調節(jie)。