# How do you calculate air compressor power consumption?

## How do you calculate air compressor power consumption?

To find kilowatt hours, multiply the watts per hour by the total amount of time the compressor runs for. Then divide this number by 1,000. So a 15-amp air compressor that runs for three hours will use 4.95 kilowatt hours of electricity.

### How do you calculate the kW of a compressor?

kW = (A x V x 1.732 x pf)/1,000 Eqn 1 But, you can calculate kW from measured amperage accurately only if you simultaneously measure the voltage and power factor. Or use a kW meter or motor analyzer, which gives a direct kW reading.

#### How do you calculate CFM from motor kW?

If we want to calculate the CFM (Cubic Feet per Minute) for a 4 cycle motor we can multiply the cubic inch displacement of the engine by the maximum rpm (Revolutions Per Minute) and divide the result by 3456. Then we multiply the results by the volumetric efficiency of the motor.

How is compressor efficiency calculated?

Simple Energy Formula: Motor Efficiency = Cost per KW X . 746 (Power Factor) X Hours of operation X Brake horsepower *Note: No electric motor is 100% efficient, most will average 92-95% efficient. PSI VS. BHP (Rule of thumb): For every 1 PSIG pressure drop, BHP (Brake horsepower) goes down ½ %.

What is the cost of an air compressor?

Average Industrial Air Compressor Prices The average cost of an industrial air compressor is \$36,500 with prices ranging from \$1,000 for a 5HP reciprocating air compressor to \$70,000 for a 200HP air compressor for the US in 2020 according to CostOwl.

## How is compressor work calculated?

For compressors work is calculated by dividing the enthalpy difference (Δht), from (8), by a mechanical efficiency ( η m c = 97 % ) . Polytropic head (Δhp) is calculated using the difference in entropy (ΔS) and temperature (ΔT), as shown in (9).

### How do I calculate air compressor output?

The way to measure true power is to measure the time it takes to pump the reservoir tank of known volume from a known starting pressure to a known ending pressure. Then you can figure the true CFM from the difference in starting and final pressures, times the volume of the tank, divided by the time it took to pump up.

#### How do you calculate specific energy consumption?

Generally, SEC is calculated by dividing the amount of energy used with the amount of products.