When comparing AODD pumps, the key factor affecting energy cost is the air consumption rate. Pumps that use less air to achieve the same performance will deliver the greatest energy savings.
Here’s how it works:
Energy use for an AODD pump is best evaluated by the horsepower required to produce the compressed air that drives it. This demand is determined by two factors: air pressure (psi) and air consumption (SCFM).
Most industrial compressors operate between 100 and 125 psi and store compressed air in a receiver tank. The compressor cycles on when the tank pressure drops to about 100 psi and shuts off at roughly 125 psi. When the compressor begins compressing air, it works against the existing 100 psi in the tank, meaning energy costs are tied to refilling the tank back to full pressure.
Although the air delivered to the pump is regulated down to the required operating pressure, this pressure reduction does not reduce energy consumption. The energy has already been used to compress the air to a higher storage pressure.