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
Malaysia
