[AC] 問﹕簡介一下你對District Cooling System 既認識？

答﹕

DCS 係集中一個地方做Chilled Water；我地平時係每棟樓自己放枱Chiller做冷水。

點解係Enviromental Friendly Design? 對曰﹕就好似隨地大小便同公廁分別，公廁啲屎屎尿尿可以集中處理。

最終啲冷水係由中央賣比你，會經Heat exchanger分兩loop
個概念同港燈比牛好似，一頭高壓佢地既，一頭低壓你既；
DSC 冷水就係一頭低溫佢既，一頭相對冇咁低溫你既；
參考下﹕EMSD loop 5oC/13oC; Consumer loop 6oC/14oC;

好處﹕
1. Easy calculation for pressure;
2. Avoid ross contamination;
3. Clear demarcation;
4. 用戶慳位，唔洗裝chiller and cooling tower
5. reduce noise and vibration

Operation常識﹕
自己嗰頭水溫太低，say 12oC, 就要由2 way valve recircular 返supply;
Temperature sensor on R.A. to control chilled water valve

(Source: EMSD)