Calculating Energy Savings from VFD Retrofits in HVAC

Engineering Operational Savings

For facility managers in Ranjangaon and Karegaon, the electricity bill for chilled water pumps and exhaust blowers often accounts for the majority of operational overhead. Installing Variable Frequency Drives (VFDs) is the single most effective way to slash this cost.

The Affinity Law Advantage

The power consumed by a centrifugal pump or fan varies by the cube of its speed.

• Slow down a motor to 80% speed: You only consume 51% of the original power.
• Slow it to 50%: You consume roughly 12.5% of the original power.

Field Implementation Strategy

1. Data Collection: Install a power analyzer to log current draw at 100% speed.
2. Load Profiling: Identify hours where the factory operates at partial capacity.
3. VFD Integration: Program the drive to modulate speed based on pressure or temperature sensors, not manual switches.

Ready to slash your electricity overhead? Book a VFD energy audit with Prime Cool.