【溫濕(shi)度調(diao)節(jie)】室(shi)內溫度和濕(shi)度怎么調(diao)節(jie) 室(shi)內空氣溫濕(shi)度調(diao)節(jie)方法
一、引言
室(shi)(shi)內(nei)空(kong)氣(qi)(qi)品質(zhi)作(zuo)為(wei)(wei)概念提出并進行研究已經(jing)(jing)有一個(ge)多世紀的(de)歷史(shi),人們(men)已經(jing)(jing)從傳統的(de)溫(wen)(wen)度要(yao)求(qiu)發展到(dao)空(kong)調(diao)專(zhuan)業指標(biao)(biao)(溫(wen)(wen)度、濕度、室(shi)(shi)內(nei)空(kong)氣(qi)(qi)流速和(he)紊流強度、室(shi)(shi)內(nei)感(gan)知(zhi)溫(wen)(wen)差、溫(wen)(wen)度輻射不(bu)對稱(cheng)性(xing)等) 和(he)大氣(qi)(qi)環(huan)境指標(biao)(biao)(污染物氣(qi)(qi)體(ti)、總懸浮微粒(li)(TSP)、飄(piao)塵、輻射性(xing)物質(zhi)等) 的(de)綜合性(xing)要(yao)求(qiu)。作(zuo)為(wei)(wei)舒(shu)適(shi)性(xing)空(kong)調(diao)工程專(zhuan)業來講(jiang)其主要(yao)關(guan)注的(de)還是人們(men)最(zui)容易感(gan)知(zhi)和(he)最(zui)直接(jie)的(de)感(gan)受(shou):溫(wen)(wen)濕度指標(biao)(biao)。
二、傳統的溫濕度控制
傳(chuan)統(tong)的(de)(de)(de)(de)(de)溫(wen)(wen)濕(shi)(shi)(shi)度(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)都是采用溫(wen)(wen)濕(shi)(shi)(shi)度(du)(du)耦合控(kong)(kong)(kong)(kong)制(zhi)(zhi)的(de)(de)(de)(de)(de)方式(shi),這種方式(shi)依靠表冷器(qi)(qi)提供冷源使(shi)表冷器(qi)(qi)與(yu)空(kong)(kong)氣(qi)間形成溫(wen)(wen)差驅(qu)動顯然(ran)傳(chuan)熱,從而(er)降(jiang)低濕(shi)(shi)(shi)空(kong)(kong)氣(qi)溫(wen)(wen)度(du)(du),同時濕(shi)(shi)(shi)空(kong)(kong)氣(qi)因溫(wen)(wen)度(du)(du)降(jiang)低使(shi)干空(kong)(kong)氣(qi)分(fen)壓(ya)力(li)下降(jiang),而(er)此時濕(shi)(shi)(shi)空(kong)(kong)氣(qi)中(zhong)的(de)(de)(de)(de)(de)水(shui)(shui)蒸氣(qi)分(fen)壓(ya)力(li)卻保(bao)持不(bu)變,當(dang)濕(shi)(shi)(shi)空(kong)(kong)氣(qi)的(de)(de)(de)(de)(de)溫(wen)(wen)度(du)(du)降(jiang)低到(dao)(dao)水(shui)(shui)蒸氣(qi)的(de)(de)(de)(de)(de)分(fen)壓(ya)力(li)所(suo)對應的(de)(de)(de)(de)(de)飽(bao)和溫(wen)(wen)度(du)(du)時,水(shui)(shui)蒸氣(qi)達(da)到(dao)(dao)飽(bao)和狀態,如果(guo)濕(shi)(shi)(shi)空(kong)(kong)氣(qi)的(de)(de)(de)(de)(de)溫(wen)(wen)度(du)(du)進一步降(jiang)低,那么濕(shi)(shi)(shi)空(kong)(kong)氣(qi)就(jiu)會析出水(shui)(shui)滴,從而(er)實現除濕(shi)(shi)(shi)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de),這種控(kong)(kong)(kong)(kong)制(zhi)(zhi)方式(shi)將溫(wen)(wen)度(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)和濕(shi)(shi)(shi)度(du)(du)控(kong)(kong)(kong)(kong)制(zhi)(zhi)捆(kun)綁在一起由一個系統(tong)來承擔兩種負(fu)荷的(de)(de)(de)(de)(de)控(kong)(kong)(kong)(kong)制(zhi)(zhi)任(ren)務,體現在工程上(shang)就(jiu)是當(dang)任(ren)何一個參數達(da)不(bu)到(dao)(dao)要求(qiu)就(jiu)要啟動整個系統(tong)造(zao)成能量的(de)(de)(de)(de)(de)損耗。而(er)溫(wen)(wen)濕(shi)(shi)(shi)度(du)(du)獨立(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)既省力(li)又快捷。下面介紹溫(wen)(wen)濕(shi)(shi)(shi)度(du)(du)獨立(li)控(kong)(kong)(kong)(kong)制(zhi)(zhi)的(de)(de)(de)(de)(de)各(ge)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(nuan)(nuan),電(dian)熱(re)膜(mo)采(cai)暖(nuan)(nuan)等(deng)。
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,還需(xu)在各個房(fang)(fang)間的(de)地面下(xia)鋪設(she)蛇形盤管(guan) 3.1.2分戶壁(bi)掛(gua)(gua)(gua)燃(ran)氣鍋爐供(gong)暖(水(shui)地暖)這種采暖方式通常是在用(yong)戶自家的(de)廚房(fang)(fang)或陽臺上(shang)安裝壁(bi)掛(gua)(gua)(gua)爐,由壁(bi)掛(gua)(gua)(gua)爐燃(ran)燒天(tian)然氣將水(shui)燒熱輸(shu)送到各個房(fang)(fang)間的(de)地下(xia)盤管(guan)中,再通過盤管(guan)向地板及室(shi)內(nei)空間輻射供(gong)暖。
3.1.3電熱電纜地暖(電地暖)
這種采暖方式與水地暖的(de)(de)構(gou)造基本相(xiang)同,不同的(de)(de)是(shi)用電來加(jia)熱(re)地下(xia)管道的(de)(de)。優(you)點是(shi),不受集中供(gong)暖熱(re)網的(de)(de)限制(zhi),供(gong)停自由;每個(ge)房間溫(wen)度能(neng)在一定范圍(wei)內隨(sui)意調節;暖氣(qi)由下(xia)而上,腳暖頭(tou)涼,符合中醫健(jian)康理(li)論;美觀大方,不占用室內空(kong)間。不足之處(chu)有:
1、地下電(dian)纜不能(neng)隨意裁切,一旦裁切會破壞導熱(re)功能(neng),因此安裝時有(you)可能(neng)會在房間留下“冷區”。
2、有一定的有害電(dian)磁(ci)(ci)輻(fu)射,一些電(dian)地暖廠家不得(de)不采取(qu)措施屏(ping)蔽有害電(dian)磁(ci)(ci)輻(fu)。
3.1.4尚蘭格“暖芯地板”采暖方式
這(zhe)(zhe)是一種有(you)“暖芯”的地(di)板(ban)(ban)。外觀上與地(di)板(ban)(ban)無異,只是植入(ru)地(di)板(ban)(ban)上表層的“暖芯層+遠紅外層”使地(di)板(ban)(ban)具有(you)了“地(di)板(ban)(ban)裝飾(shi)、采(cai)暖、保(bao)健(jian)”三合一的功能。目前越來越多(duo)的新(xin)建小區開始采(cai)用(yong)這(zhe)(zhe)種采(cai)暖方式。
3.2 室內降溫
室(shi)內(nei)降溫(wen)方法很多(duo),而且(qie)各有優劣,找到適合自己的,才是最好的降溫(wen)方式。
3.2.1 空調
優點是(shi)降溫快(kuai),效果好,一般(ban)可(ke)以達到最舒適室溫;但是(shi)一次性(xing)投入費(fei)用高。
3.2.2 換氣扇
換氣(qi)(qi)扇東西向的房子(zi)通風比較差(cha),安換氣(qi)(qi)扇可加(jia)強室(shi)內空(kong)氣(qi)(qi)流(liu)動(dong),如果(guo)可以,最好東、西兩邊窗各安一(yi)個(ge)(ge)換氣(qi)(qi)扇,一(yi)個(ge)(ge)向里(li)吹,一(yi)個(ge)(ge)向外吹。優點(dian)是(shi)(shi)降溫較好,投入低,不占住房面(mian)積;但是(shi)(shi)調節室(shi)溫作用有限(xian),最多接近室(shi)外溫度。
3.2.3 植物
西向窗(chuang)外栽(zai)上(shang)植(zhi)物(wu),最(zui)好是牽(qian)(qian)牛花(hua)、爬墻虎這(zhe)類可以牽(qian)(qian)藤(teng)又有較(jiao)大葉子的(de),讓它順窗(chuang)戶(hu)護欄攀爬,如無(wu)窗(chuang)護欄,可考慮在(zai)窗(chuang)上(shang)下部外墻面(mian)釘釘子,拉上(shang)鐵絲或線(xian)作植(zhi)物(wu)攀爬用(yong),待植(zhi)物(wu)基本長滿整面(mian)窗(chuang)戶(hu),能起(qi)很(hen)(hen)好的(de)遮陽效(xiao)果(guo),又很(hen)(hen)美(mei)觀(guan)(西向窗(chuang)子氣溫高(gao),給植(zhi)物(wu)澆水(shui)(shui)一般干得很(hen)(hen)快(kuai),可用(yong)礦泉水(shui)(shui)瓶在(zai)底部鑿個小洞,裝上(shang)水(shui)(shui)直(zhi)立放入(ru)花(hua)盆,用(yong)瓶蓋松緊調(diao)節水(shui)(shui)量,以利保持水(shui)(shui)份)。此法有較(jiao)好降溫效(xiao)果(guo),經濟實惠又美(mei)觀(guan);但是植(zhi)物(wu)需(xu)要(yao)養(yang)(yang)(yang)護,愛(ai)養(yang)(yang)(yang)花(hua)的(de)人很(hen)(hen)歡喜(xi),不愛(ai)養(yang)(yang)(yang)花(hua)或沒(mei)時間養(yang)(yang)(yang)花(hua)的(de)人很(hen)(hen)痛苦(ku)。
3.2.4 窗簾
外出時把窗簾拉上(shang),回家(jia)時再打開(kai)(窗和窗簾之間還可加(jia)一層遮光簾,效(xiao)果會更好)。這是(shi)最省錢省心(xin)的降溫方法(fa),但(dan)是(shi)盡管能明顯感受到氣溫比平(ping)時低,但(dan)室內(nei)還是(shi)很(hen)熱。
3.2.5 冷色調
家居飾物盡量用冷色調,從視覺上可以給人一定的涼快錯覺。
3.2.6 反光膜
在西向窗戶外(wai)貼反(fan)(fan)光(guang)膜,可(ke)以起一定降(jiang)(jiang)溫作(zuo)用。缺點(dian)就(jiu)是(shi)本來通(tong)風就(jiu)不好,還得關(guan)著(zhu)窗,一開窗反(fan)(fan)光(guang)膜的作(zuo)用就(jiu)降(jiang)(jiang)低了。
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(dui)(dui)室(shi)(shi)內(nei)(nei)(nei)空(kong)(kong)氣加熱升溫(wen)(wen),空(kong)(kong)氣的(de)(de)相對(dui)(dui)濕度(du)(du)(du)隨著空(kong)(kong)氣溫(wen)(wen)度(du)(du)(du)升高而降(jiang)低(di),含濕量(liang)不(bu)(bu)變。若室(shi)(shi)內(nei)(nei)(nei)不(bu)(bu)斷產生濕量(liang),用升溫(wen)(wen)方法(fa)仍然不(bu)(bu)能(neng)減低(di)相對(dui)(dui)濕度(du)(du)(du),再加上單純加熱而不(bu)(bu)通風(feng)會使室(shi)(shi)內(nei)(nei)(nei)空(kong)(kong)氣清新度(du)(du)(du)下降(jiang),所以,單一(yi)的(de)(de)升溫(wen)(wen)既不(bu)(bu)能(neng)真正除(chu)濕,又不(bu)(bu)能(neng)通風(feng)換氣,空(kong)(kong)氣質量(liang)差(cha),此(ci)法(fa)一(yi)般(ban)不(bu)(bu)宜單獨采(cai)用。室(shi)(shi)外空(kong)(kong)氣的(de)(de)含濕量(liang)在(zai)不(bu)(bu)同(tong)季節(jie)和同(tong)一(yi)天的(de)(de)不(bu)(bu)同(tong)時刻也是不(bu)(bu)同(tong)的(de)(de),綜合分(fen)析當地氣候資源特點(dian),部分(fen)地區條件(jian)允許時可(ke)用通風(feng)方法(fa)將室(shi)(shi)外相對(dui)(dui)濕度(du)(du)(du)較低(di)的(de)(de)空(kong)(kong)氣送(song)入室(shi)(shi)內(nei)(nei)(nei),將室(shi)(shi)內(nei)(nei)(nei)相對(dui)(dui)濕度(du)(du)(du)較高的(de)(de)空(kong)(kong)氣置換出去,即(ji)通風(feng)除(chu)濕。
4.1.2蒸氣壓縮式除濕機/冷凍除濕機
蒸氣(qi)壓縮式除(chu)濕機(ji)(ji)又稱冷(leng)凍除(chu)濕機(ji)(ji),即(ji)利用(yong)制冷(leng)系統中蒸發(fa)器(qi)表(biao)面溫度較(jiao)低(di)(一般可以低(di)于被處理空(kong)氣(qi)的(de)露點溫度),使得空(kong)氣(qi)中的(de)水蒸氣(qi)凝(ning)結在(zai)蒸發(fa)器(qi)表(biao)面,以減小空(kong)氣(qi)中的(de)含濕量。這就是為什么我(wo)們(men)在(zai)夏季家用(yong)空(kong)調運行時,室內機(ji)(ji)一側會(hui)有冷(leng)凝(ning)水需要排除(chu)的(de)原因。
4.1.3利用固體和液體吸濕劑的干燥去濕裝置
固體吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)分兩類,吸(xi)(xi)(xi)(xi)(xi)(xi)附式(shi)除(chu)濕(shi)(shi)(shi)劑(ji)和(he)吸(xi)(xi)(xi)(xi)(xi)(xi)收式(shi)除(chu)濕(shi)(shi)(shi)劑(ji),吸(xi)(xi)(xi)(xi)(xi)(xi)附式(shi)除(chu)濕(shi)(shi)(shi)劑(ji)處(chu)理(li)濕(shi)(shi)(shi)空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)時,不改(gai)變(bian)自身的(de)(de)(de)物(wu)(wu)(wu)理(li)或(huo)(huo)(huo)化(hua)學結構(gou),如硅膠(jiao)、活性鋁、鋁膠(jiao)或(huo)(huo)(huo)分子篩;吸(xi)(xi)(xi)(xi)(xi)(xi)收式(shi)吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)在(zai)吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)過(guo)程中(zhong)會改(gai)變(bian)自身的(de)(de)(de)物(wu)(wu)(wu)理(li)或(huo)(huo)(huo)化(hua)學結構(gou),如氯化(hua)鈣或(huo)(huo)(huo)氯化(hua)鋰等(deng)鹽類。液(ye)體吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)為濃縮(suo)的(de)(de)(de)鹽溶液(ye),如三甘醇、氯化(hua)鋰、溴化(hua)鋰、氯化(hua)鈣等(deng)水溶液(ye),并具(ju)有(you)(you)(you)與使用(yong)要(yao)求相適(shi)應的(de)(de)(de)蒸汽(qi)壓(ya)力(li)特性。通(tong)過(guo)調(diao)節液(ye)體吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)的(de)(de)(de)溫度和(he)濃度,可以(yi)實現多種空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)處(chu)理(li)過(guo)程,將空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)處(chu)理(li)到所需的(de)(de)(de)狀態,可避免冷(leng)凍去濕(shi)(shi)(shi)過(guo)程中(zhong)先將空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)冷(leng)卻到機器露點而后(hou)再加熱(re)的(de)(de)(de)冷(leng)熱(re)抵消現象。液(ye)體吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)處(chu)理(li)空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)時還具(ju)有(you)(you)(you)消除(chu)空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)中(zhong)氣(qi)(qi)(qi)(qi)態污染物(wu)(wu)(wu)(如大量的(de)(de)(de)揮發(fa)性有(you)(you)(you)機化(hua)合物(wu)(wu)(wu),即vOCs)和(he)微(wei)生物(wu)(wu)(wu)的(de)(de)(de)作用(yong),有(you)(you)(you)助(zhu)于改(gai)善室內(nei)空(kong)(kong)(kong)氣(qi)(qi)(qi)(qi)質量。采用(yong)固體或(huo)(huo)(huo)液(ye)體吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)的(de)(de)(de)空(kong)(kong)(kong)調(diao)系統(tong),必須要(yao)有(you)(you)(you)相應的(de)(de)(de)吸(xi)(xi)(xi)(xi)(xi)(xi)濕(shi)(shi)(shi)劑(ji)再生設備,所以(yi)系統(tong)復雜,設備占地面(mian)積大,維(wei)護要(yao)求較(jiao)高,目前主要(yao)用(yong)于對濕(shi)(shi)(shi)度要(yao)求較(jiao)高的(de)(de)(de)生產過(guo)程或(huo)(huo)(huo)大、中(zhong)型的(de)(de)(de)商業建筑(zhu),以(yi)及有(you)(you)(you)特殊用(yong)途的(de)(de)(de)房問。
4.1.4被動除濕
利用(yong)多孔建筑(zhu)裝飾(shi)材料(liao)(liao)的(de)吸濕(shi)(shi)(shi)(shi)(shi)(shi)和蓄濕(shi)(shi)(shi)(shi)(shi)(shi)特性(xing)吸收(shou)室內(nei)空氣中(zhong)(zhong)多余的(de)水(shui)汽,起到調節室內(nei)空氣濕(shi)(shi)(shi)(shi)(shi)(shi)度的(de)作(zuo)(zuo)用(yong),稱(cheng)為(wei)被(bei)動(dong)除濕(shi)(shi)(shi)(shi)(shi)(shi)。與傳(chuan)熱(re)過程(cheng)(cheng)類似(si),外圍護結構的(de)濕(shi)(shi)(shi)(shi)(shi)(shi)傳(chuan)遞也包括三(san)個階段:高濕(shi)(shi)(shi)(shi)(shi)(shi)空氣側(ce)的(de)吸濕(shi)(shi)(shi)(shi)(shi)(shi)、建筑(zhu)材料(liao)(liao)內(nei)濕(shi)(shi)(shi)(shi)(shi)(shi)遷(qian)移(濕(shi)(shi)(shi)(shi)(shi)(shi)滲透)和低濕(shi)(shi)(shi)(shi)(shi)(shi)空氣側(ce)的(de)釋濕(shi)(shi)(shi)(shi)(shi)(shi)過程(cheng)(cheng)。若把傳(chuan)熱(re)理解為(wei)熱(re)的(de)濃(nong)度(焓)擴散,則(ze)濕(shi)(shi)(shi)(shi)(shi)(shi)(質(zhi))遷(qian)移可(ke)理解為(wei)濕(shi)(shi)(shi)(shi)(shi)(shi)的(de)濃(nong)度擴散。被(bei)動(dong)除濕(shi)(shi)(shi)(shi)(shi)(shi)可(ke)采用(yong)的(de)建筑(zhu)裝飾(shi)材料(liao)(liao)如(ru)石(shi)膏(gao)板,其(qi)中(zhong)(zhong)以(yi)紙(zhi)面石(shi)膏(gao)板為(wei)代表。紙(zhi)面石(shi)膏(gao)板是以(yi)建筑(zhu)石(shi)膏(gao)為(wei)主要原料(liao)(liao)摻人(ren)適量的(de)添加劑如(ru)填充料(liao)(liao)、發(fa)泡劑、緩凝劑等以(yi)及纖維做成板芯,以(yi)特殊(shu)的(de)板紙(zhi)為(wei)護面而制(zhi)成。一般未經處理的(de)紙(zhi)面石(shi)膏(gao)l~2小時(shi)(shi)(shi)的(de)吸水(shui)率大于30%,72小時(shi)(shi)(shi)為(wei)40%左右。根據清華大學金招芬等理論計算結果,在上海地區若采用(yong)調濕(shi)(shi)(shi)(shi)(shi)(shi)板,室內(nei)相(xiang)對濕(shi)(shi)(shi)(shi)(shi)(shi)度除十個工(gong)作(zuo)(zuo)日(ri)的(de)小時(shi)(shi)(shi)數(約(yue)230小時(shi)(shi)(shi))超過80%以(yi)外,全年工(gong)作(zuo)(zuo)日(ri)內(nei)室內(nei)相(xiang)對濕(shi)(shi)(shi)(shi)(shi)(shi)度可(ke)保持在35%~80%內(nei)范(fan)圍。
4.1.5干式除濕
干式除(chu)(chu)濕(shi)(shi)(shi)(shi)機(ji)的(de)(de)(de)原理是濕(shi)(shi)(shi)(shi)空氣通(tong)過含(han)吸(xi)(xi)濕(shi)(shi)(shi)(shi)劑的(de)(de)(de)纖維(wei)紙的(de)(de)(de)蜂窩(wo)狀體(如轉(zhuan)輪除(chu)(chu)濕(shi)(shi)(shi)(shi)機(ji)),在水蒸汽分(fen)壓力差的(de)(de)(de)作用下,水分(fen)被(bei)吸(xi)(xi)濕(shi)(shi)(shi)(shi)劑吸(xi)(xi)收或吸(xi)(xi)附(fu)。轉(zhuan)輪除(chu)(chu)濕(shi)(shi)(shi)(shi)機(ji)的(de)(de)(de)發(fa)展較快,其除(chu)(chu)濕(shi)(shi)(shi)(shi)能(neng)力較強(qiang),其除(chu)(chu)濕(shi)(shi)(shi)(shi)效果比(bi)冷(leng)凍除(chu)(chu)濕(shi)(shi)(shi)(shi)好,主(zhu)要(yao)應(ying)用于潮濕(shi)(shi)(shi)(shi)氣候環境(jing)下濕(shi)(shi)(shi)(shi)負(fu)荷(he)較大且(qie)有低(di)濕(shi)(shi)(shi)(shi)要(yao)求的(de)(de)(de)房間。與冷(leng)凍除(chu)(chu)濕(shi)(shi)(shi)(shi)相比(bi),被(bei)處理空氣不必冷(leng)卻至露點溫(wen)度以下,避免(mian)了制冷(leng)劑蒸發(fa)溫(wen)度過低(di)影響冷(leng)效率,又可避免(mian)凝結水排放不當造成的(de)(de)(de)滲漏問題。
4.2空氣加濕
對空氣的(de)加濕(shi),可以采用(yong)(yong)直接噴(pen)蒸汽或采用(yong)(yong)噴(pen)淋室(shi)噴(pen)水(shui)來進(jin)行。也有用(yong)(yong)電加濕(shi)器來實現。
4.2.1水蒸氣加濕
用水蒸(zheng)(zheng)氣(qi)加(jia)濕空(kong)氣(qi),可以(yi)增(zeng)加(jia)空(kong)氣(qi)的(de)含濕量(liang),加(jia)濕用的(de)蒸(zheng)(zheng)氣(qi)可以(yi)兼用鍋爐產生的(de)低壓蒸(zheng)(zheng)氣(qi),也(ye)可由電(dian)加(jia)濕器(qi)產生的(de)蒸(zheng)(zheng)氣(qi)。后者容(rong)易控(kong)制,在要求(qiu)較高的(de)空(kong)調(diao)系(xi)統中得到(dao)廣泛使用。
4.2.2 電加濕器加濕
電(dian)(dian)(dian)(dian)(dian)加濕(shi)器(qi)主要有電(dian)(dian)(dian)(dian)(dian)熱式(shi)(shi)和(he)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)式(shi)(shi)兩種。電(dian)(dian)(dian)(dian)(dian)熱式(shi)(shi)加濕(shi)器(qi)是電(dian)(dian)(dian)(dian)(dian)流(liu)通過放在水(shui)(shui)(shui)容器(qi)中的(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)絲(電(dian)(dian)(dian)(dian)(dian)阻(zu)絲用(yong)絕緣密封處(chu)理),將水(shui)(shui)(shui)加熱至(zhi)沸騰而(er)產(chan)(chan)生(sheng)蒸(zheng)氣。電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)式(shi)(shi)加濕(shi)器(qi)是利(li)用(yong)三根銅棒或不銹鋼棒插(cha)入盛水(shui)(shui)(shui)的(de)(de)容器(qi)中做電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)。將電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)與(yu)三相電(dian)(dian)(dian)(dian)(dian)源接通之后,就(jiu)有電(dian)(dian)(dian)(dian)(dian)流(liu)從(cong)水(shui)(shui)(shui)中通過。在這里(li)水(shui)(shui)(shui)是電(dian)(dian)(dian)(dian)(dian)阻(zu),因而(er)能被加熱蒸(zheng)發(fa)成蒸(zheng)氣。顯(xian)然,水(shui)(shui)(shui)位(wei)越高(gao),導電(dian)(dian)(dian)(dian)(dian)面積(ji)越大(da)(da)(da),通過電(dian)(dian)(dian)(dian)(dian)流(liu)也越強,因而(er)發(fa)熱量(liang)也越大(da)(da)(da)。所以,產(chan)(chan)生(sheng)蒸(zheng)氣量(liang)的(de)(de)多少可(ke)以用(yong)水(shui)(shui)(shui)位(wei)來(lai)控制。而(er)水(shui)(shui)(shui)位(wei)的(de)(de)高(gao)低(di)可(ke)以用(yong)改(gai)變(bian)溢流(liu)管高(gao)度的(de)(de)方法來(lai)調節(jie)。電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)式(shi)(shi)加濕(shi)器(qi)結構緊湊,而(er)且加濕(shi)量(liang)容易(yi)(yi)控制,使用(yong)較多。但它耗電(dian)(dian)(dian)(dian)(dian)量(liang)較大(da)(da)(da),電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)上易(yi)(yi)積(ji)水(shui)(shui)(shui)垢和(he)腐蝕(shi)。因此,宜用(yong)在小(xiao)型空調系統上。
五、結論
以上介紹了各種空(kong)氣(qi)溫(wen)(wen)(wen)濕度調節的(de)(de)方(fang)法(fa)。在我(wo)看來,室內(nei)溫(wen)(wen)(wen)濕度獨立控制(zhi)比較(jiao)節能可行(xing)。在實際中,宜將上述的(de)(de)幾種空(kong)氣(qi)處理方(fang)法(fa)根據需要進行(xing)有(you)(you)機的(de)(de)組合,再加上合理的(de)(de)控制(zhi),就可以對室內(nei)的(de)(de)溫(wen)(wen)(wen)濕度環境進行(xing)有(you)(you)效的(de)(de)控制(zhi)和調節。