Chiller ECM

This page was developed by the Queen's University Applied Sustainability Research Group.

The chiller unit consumes a large portion of a building's energy. The following data will help in accessing the efficiency of the unit and provide a means to evaluate possible solutions.

Chilling unit information required:

• Chiller Type <-
• Cooling Capacity (BTU/Hr)
• Operating Schedule <-
• Auxiliary Equipment (types, control, age)
• Typical Usage (seasonal, etc.) <-
• Chiller Controls (manual, automatic) <-
• Control Sensors (type and location) <-
• Pump Usage/Type (flow, pressure requirements)
• Sump Heaters
• Standard Chilled Water Temperature
• Heat Rejection Fans
• Minimum Condenser Temperature Limit
• Maintenance Schedule (level of fouling, cleaning)
• End-Use Devices (pressure requirements) <-
• Refrigerant Charge Limits
• Purge Units
• Valve Types

(Equipment and Operation Guide, Pumps, Compressors, Refrigerant)

Note: Cooling storage methods may provide a means to reduce electricity consumption by utilizing cheaper electricity rate periods.