一、恒溫恒濕空調系統的形式有哪兩種
恒溫恒濕空調可以對室內溫、濕度波動和區域偏差進行嚴格的控制,在很多領域都有應用,恒溫恒濕空調系統的形式主要(yao)有兩種:
1、采用恒溫恒濕空調機組(自帶制冷機)的全空氣系統
恒(heng)溫恒(heng)濕(shi)空(kong)(kong)(kong)調機組(zu)(zu)宜用(yong)在精度(du)(du)(du)Δt=±1℃,Δφ=10%的(de)(de)(de)空(kong)(kong)(kong)調房(fang)間內。在夏季,機組(zu)(zu)對濕(shi)度(du)(du)(du)的(de)(de)(de)控(kong)制(zhi)能力較(jiao)低,因此機組(zu)(zu)冷量(liang)的(de)(de)(de)調節一般(ban)只有兩檔或三檔。因此只適用(yong)于濕(shi)負荷變化比較(jiao)小的(de)(de)(de)空(kong)(kong)(kong)調房(fang)間。如果空(kong)(kong)(kong)調房(fang)間對濕(shi)度(du)(du)(du)控(kong)制(zhi)要求不高,這種機組(zu)(zu)可(ke)用(yong)于溫度(du)(du)(du)控(kong)制(zhi)要求較(jiao)高(如±0.5℃)的(de)(de)(de)場合(he)。但如果恒(heng)溫恒(heng)濕(shi)空(kong)(kong)(kong)調機組(zu)(zu)采用(yong)變頻控(kong)制(zhi)壓(ya)縮機的(de)(de)(de)轉(zhuan)速,則濕(shi)度(du)(du)(du)的(de)(de)(de)控(kong)制(zhi)精度(du)(du)(du)可(ke)達到±2%。
2、以冷凍水作介質的全空氣系統
以(yi)冷(leng)(leng)凍(dong)(dong)水(shui)作冷(leng)(leng)卻介質的(de)(de)定(ding)風量全(quan)空氣系(xi)(xi)(xi)統(tong)的(de)(de)恒(heng)溫(wen)恒(heng)濕(shi)(shi)空調系(xi)(xi)(xi)統(tong)都(dou)采(cai)用(yong)再(zai)熱(re)式系(xi)(xi)(xi)統(tong)。在夏季(ji),通過(guo)調節(jie)再(zai)加(jia)熱(re)量以(yi)控制(zhi)溫(wen)度(du),調節(jie)空氣冷(leng)(leng)卻設備(bei)(bei)的(de)(de)冷(leng)(leng)量以(yi)控制(zhi)濕(shi)(shi)度(du)。空氣冷(leng)(leng)卻設備(bei)(bei)如采(cai)用(yong)表冷(leng)(leng)器的(de)(de)系(xi)(xi)(xi)統(tong),適宜(yi)用(yong)于(yu)濕(shi)(shi)度(du)變化不大的(de)(de)場合。全(quan)年(nian)濕(shi)(shi)度(du)變化較大或濕(shi)(shi)度(du)控制(zhi)精度(du)較高(gao)的(de)(de)場所(suo),熱(re)濕(shi)(shi)處(chu)理設備(bei)(bei)宜(yi)采(cai)用(yong)噴(pen)水(shui)室。噴(pen)水(shui)室都(dou)是(shi)開(kai)式的(de)(de),當冷(leng)(leng)凍(dong)(dong)水(shui)系(xi)(xi)(xi)統(tong)主(zhu)要用(yong)于(yu)噴(pen)水(shui)室設備(bei)(bei),冷(leng)(leng)凍(dong)(dong)水(shui)系(xi)(xi)(xi)統(tong)可以(yi)是(shi)開(kai)式的(de)(de);當系(xi)(xi)(xi)統(tong)中既有噴(pen)水(shui)室又有表冷(leng)(leng)器、風機盤管等設備(bei)(bei),冷(leng)(leng)凍(dong)(dong)水(shui)系(xi)(xi)(xi)統(tong)應當優先采(cai)用(yong)閉式系(xi)(xi)(xi)統(tong)。
二、恒溫恒濕空調機組分幾部分
恒溫恒濕空調機組是恒溫恒濕空調系(xi)統常用的形式(shi),它自(zi)帶(dai)制(zhi)冷機,由制(zhi)冷系(xi)統、電加熱器(qi)、加濕器(qi)及溫(wen)濕度自(zi)動控制(zhi)元件(jian)等幾部(bu)分組(zu)成,其具體(ti)結構包括:
干濕(shi)球(qiu)溫度控制器(qi)、電加熱器(qi)、通風(feng)機、電極加濕(shi)器(qi)、蒸發器(qi)、壓(ya)縮機、冷(leng)凝器(qi)、貯液(ye)器(qi)、壓(ya)力控制器(qi)、過濾器(qi)、節流機構(gou);如果是(shi)熱泵式(shi)恒(heng)溫恒(heng)濕(shi)空(kong)調機組(zu),其制冷(leng)系(xi)統中還會(hui)加一個四通轉向(xiang)閥,使冷(leng)凝器(qi)與蒸發器(qi)互(hu)相轉換(huan)。