What is total input power?

Do you know air compressor total input power is higher than the nominal power stated on the brochure?

A 110KW – 7 barg air compressor will consume 127.4KW total input power

Why total input power is higher than the compressor nominal power

  1. Because electric motor has losses. If 110KW electric motor efficiency is 95.6% then 115KW must be applied the motor to overcome the losses.
  2. Cooling fan and controls also consume additional energy. Fan motor power for air cooled variant is higher than water cooled variant. 110KW air cooled air compressor will use 3.6KW fan motor.

We can reduce energy consumption by using more efficient motors.