Energy Audit Chilled Water System (Johor only)

Services

Scope :

Pre-Audit Review and Site Walkthrough
- Collect system design documents, drawings, load profiles, and operating schedules
- Conduct a site walkthrough to inspect chillers, pumps, cooling towers, AHUs, and control systems
- Interview operations and maintenance staff
Data Collection and Instrumentation Setup
- Install temporary energy meters (power analyzers) on:
  - Chillers (main compressors)
  - Condenser water pumps
  - Chilled water pumps
  - Cooling tower fans
- Log data for power (kW), voltage, current, and power factor
- Install flow meters and temperature sensors on chilled and condenser water loops
Real-Time Performance Measurement
- Record actual cooling load (RT), chilled water flow, inlet/outlet temperatures
- Measure and log system kW usage during normal, peak, and partial load conditions
- Monitor equipment cycling, setpoint accuracy, and control sequences
kW/RT Calculation and Benchmarking
- Compare results against local and international benchmarks (e.g., <0.8 kW/RT for efficient systems)
- Identify deviations, inefficiencies, and abnormal operation patterns
System Efficiency Analysis
- Evaluate individual equipment efficiency:
  - Chiller performance (COP, partial-load behavior)
  - Pump and fan energy consumption
  - Cooling tower approach temperature
- Assess control system logic and automation effectiveness (e.g., BMS, VSD operation, staging)
Improvement Recommendations
- Identify retrofit opportunities (e.g., VSDs, high-efficiency chillers, control upgrades)
- Suggest operational improvements (e.g., setpoint tuning, load balancing, better scheduling)
- Estimate energy savings, payback periods, and potential carbon reduction
Reporting and Presentation
- Deliver a detailed audit report including:
  - Current kW/RT performance
  - Energy usage breakdown
  - Graphs, charts, and logged data
  - List of proposed improvements with ROI estimates