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(tong)的形式主要有兩(liang)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)濕空(kong)調(diao)機(ji)組(zu)宜用(yong)(yong)在精(jing)(jing)度(du)(du)(du)Δt=±1℃,Δφ=10%的(de)(de)空(kong)調(diao)房間(jian)內。在夏季,機(ji)組(zu)對(dui)濕度(du)(du)(du)的(de)(de)控(kong)制能力(li)較(jiao)(jiao)低,因此(ci)機(ji)組(zu)冷量的(de)(de)調(diao)節一般只(zhi)有(you)兩檔或三檔。因此(ci)只(zhi)適(shi)用(yong)(yong)于濕負荷(he)變(bian)化(hua)比較(jiao)(jiao)小的(de)(de)空(kong)調(diao)房間(jian)。如果(guo)空(kong)調(diao)房間(jian)對(dui)濕度(du)(du)(du)控(kong)制要(yao)求不高(gao),這種機(ji)組(zu)可用(yong)(yong)于溫度(du)(du)(du)控(kong)制要(yao)求較(jiao)(jiao)高(gao)(如±0.5℃)的(de)(de)場(chang)合(he)。但如果(guo)恒(heng)溫恒(heng)濕空(kong)調(diao)機(ji)組(zu)采用(yong)(yong)變(bian)頻控(kong)制壓縮機(ji)的(de)(de)轉速(su),則(ze)濕度(du)(du)(du)的(de)(de)控(kong)制精(jing)(jing)度(du)(du)(du)可達(da)到±2%。
2、以冷凍水作介質的全空氣系統
以冷(leng)凍(dong)水(shui)作冷(leng)卻介質的定(ding)風(feng)量全空氣(qi)系(xi)(xi)(xi)統(tong)的恒(heng)溫恒(heng)濕空調系(xi)(xi)(xi)統(tong)都采(cai)用(yong)再熱(re)式(shi)系(xi)(xi)(xi)統(tong)。在夏季,通過(guo)調節再加熱(re)量以控制(zhi)(zhi)溫度,調節空氣(qi)冷(leng)卻設(she)備的冷(leng)量以控制(zhi)(zhi)濕度。空氣(qi)冷(leng)卻設(she)備如采(cai)用(yong)表冷(leng)器的系(xi)(xi)(xi)統(tong),適宜用(yong)于濕度變化不大的場合。全年濕度變化較(jiao)大或濕度控制(zhi)(zhi)精度較(jiao)高的場所,熱(re)濕處理設(she)備宜采(cai)用(yong)噴水(shui)室(shi)。噴水(shui)室(shi)都是(shi)開式(shi)的,當冷(leng)凍(dong)水(shui)系(xi)(xi)(xi)統(tong)主要用(yong)于噴水(shui)室(shi)設(she)備,冷(leng)凍(dong)水(shui)系(xi)(xi)(xi)統(tong)可(ke)以是(shi)開式(shi)的;當系(xi)(xi)(xi)統(tong)中既有噴水(shui)室(shi)又(you)有表冷(leng)器、風(feng)機盤管等設(she)備,冷(leng)凍(dong)水(shui)系(xi)(xi)(xi)統(tong)應(ying)當優先采(cai)用(yong)閉式(shi)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統常(chang)用的形式,它(ta)自(zi)(zi)帶制(zhi)冷(leng)機,由制(zhi)冷(leng)系統、電加(jia)熱器、加(jia)濕器及溫濕度自(zi)(zi)動(dong)控制(zhi)元件等幾部分組(zu)成,其具體結構包(bao)括:
干(gan)濕(shi)球(qiu)溫度控(kong)制(zhi)器(qi)(qi)(qi)、電(dian)加熱器(qi)(qi)(qi)、通風機(ji)、電(dian)極加濕(shi)器(qi)(qi)(qi)、蒸(zheng)發(fa)器(qi)(qi)(qi)、壓縮機(ji)、冷凝器(qi)(qi)(qi)、貯液器(qi)(qi)(qi)、壓力控(kong)制(zhi)器(qi)(qi)(qi)、過濾器(qi)(qi)(qi)、節流機(ji)構;如果是熱泵(beng)式(shi)恒溫恒濕(shi)空(kong)調機(ji)組,其制(zhi)冷系(xi)統中還會加一個四通轉(zhuan)向閥(fa),使冷凝器(qi)(qi)(qi)與蒸(zheng)發(fa)器(qi)(qi)(qi)互相轉(zhuan)換(huan)。