[AC] 問﹕BEC / BEEO 2018 Air Conditioning Installation 有啲乜要點？

答﹕

- Indoor / outdoor design condition


Air Side
- Air leakage limit;
- Seperate air distribution for process zone, 即係派比啲特殊Design condition地方如Data Center, 條風候就只可以派比佢，唔可以同其他地方Share, 除非特殊條件如嗰個地方好細/嗰個地方有獨立Control, 唔洗再reheat等；
- CAV max. 1.6W/L/s; VAV 2.1W/L/s; Fan efficiency in specific condition;
- Terminal reheat, 即係凍完又熱 (反之亦然)，除非1. VAV 已調到30%; 2. 細過140L/s; 3. 為咗達到特定humidity level; 4.  75%以上係用re-claim energy;

Water Side
- Minimum Insulation Thickness for Chilled & Refrigerant Pipework;
- Minimum Chiller / Heap Pump COP, refer https://elvissharing.blogspot.com/2020/03/ac-chiller.html ; 350kW以上要有Energy Metering;
- Friction loss of  Water Pipe;
- Pump efficiency in specific condition;