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TRICON 8111通往各個房間的循環(huán)水由制冷機組進行內(nèi)部熱溝通供給，使冷凍水降溫為5℃～7℃，并經(jīng)過冷凍水循環(huán)體系向各個房間供給外部熱溝通源，內(nèi)部熱溝通發(fā)作的熱量由冷卻水循環(huán)體系經(jīng)過冷卻塔向空氣中排放，制冷機組也稱為“制冷源”。
2.2冷凍水循環(huán)體系
由冷凍泵與冷凍管道構(gòu)成，從制冷機組流出的冷凍水由冷凍泵加壓送入冷凍管道，在各個房間內(nèi)進行熱溝通，帶走房間的熱量，使房間內(nèi)的溫度下降。
2.3冷卻水循環(huán)體系TRICON 8111
由冷卻泵、冷卻管道、冷卻塔等構(gòu)成。制冷機組進行熱溝通，使冷凍水降溫的一同，必將開釋許多熱量，該有些熱量由冷卻水吸收，冷卻泵將升了溫的冷卻水壓入水塔，使之在冷卻塔中與大氣進行熱溝通，然后將降了溫的冷卻水送回到制冷機組，如此重復循環(huán)。
2.4風機盤管體系
用于將由冷凍水冷卻了的冷空氣吹入房間。
3制冷主機、冷凍泵和冷卻泵的操控體系
3.1硬件配備及操控體系
如圖1所示，選用奧越信200系列PLC作為主控單元，OYES主機模塊CPU226C（繼電器型），奧越信仿照量模塊EM232兩只，人機界面，oyes開關(guān)電源各一只，奧越信溫度丈量模塊熱電阻模塊EM231三只。

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