
Emicool
Motor City, Dubai 2021
Power Quality Analysis of chillers and pump units
Efficiency under SCADA Network
Key findings
- VFDs, chillers T/P, cooling tower pumps and fans are controlled manually (not PLC-controlled)
- Overall system COP ≤ 3.1
- 30% of temperature sensors defective (inconsistent readings)
- BTU meters reading only the main supply line
- Inconsistent BMS connections to the chillers
- Existing control system (Siemens S7 Industrial PLC) partially out of service
- Critical power quality parameters (low PF, high harmonics, failing capacitors)
- Starting point: COP ≤ 3.1
- Maintenance of assets
- Power quality correction9% savings
- Flow control (pumps)45% savings
- SCADA optimization46% savings
- Result: COP ≥ 3.813–18% savings




















